650 Area Code
| State: | California |
| Major City: | San Mateo |
| Timezone: | Pacific |
| Current Time: | 7:05am |
| Short URL: | allareacodes.com/650 |
Where is area code 650?
Area code 650 is located in California and covers San Mateo, Redwood City, Mountain View, South San Francisco, and Palo Alto. It is the only area code that serves the area.
What time zone is area code 650?
The 650 area code is located in the Pacific timezone. The Pacific time zone is also known as America/Los_Angeles. As of the last time this page was loaded, the current time is 7:05am.
History
650 was first put in service August 2, 1997. It was created from area code 415.
Nearby Area Codes
Top 2 Counties in Area Code 650
| County | Total Population | % of 650 | % of County |
|---|---|---|---|
| San Mateo, CA | 718,451 | 91% | 98% |
| Santa Clara, CA | 1,781,642 | 9% | 6% |
Top 39 Cities in Area Code 650
| City | Total Population | % of 650 | % of City |
|---|---|---|---|
| San Mateo, CA | 97,207 | 2% | 100% |
| Daly City, CA | 101,123 | 1% | 84% |
| Redwood City, CA | 76,815 | 4% | 100% |
| Mountain View, CA | 74,066 | 2% | 99% |
| South San Francisco, CA | 63,632 | 4% | 100% |
| Palo Alto, CA | 64,403 | 3% | 91% |
| San Bruno, CA | 41,114 | 1% | 100% |
| Pacifica, CA | 37,234 | 2% | 100% |
| Menlo Park, CA | 32,026 | 2% | 100% |
| Foster City, CA | 30,567 | 2% | 100% |
| Burlingame, CA | 28,806 | 1% | 100% |
| Los Altos, CA | 28,976 | 1% | 99% |
| San Carlos, CA | 28,406 | 1% | 100% |
| East Palo Alto, CA | 28,155 | 0% | 100% |
| Belmont, CA | 25,835 | 1% | 100% |
| Millbrae, CA | 21,532 | 0% | 100% |
| North Fair Oaks, CA | 14,687 | 0% | 100% |
| Stanford, CA | 13,809 | 0% | 100% |
| Half Moon Bay, CA | 11,324 | 1% | 100% |
| Hillsborough, CA | 10,825 | 1% | 100% |
| Los Altos Hills, CA | 7,922 | 1% | 100% |
| Atherton, CA | 6,914 | 1% | 100% |
| El Granada, CA | 5,467 | 1% | 100% |
| Woodside, CA | 5,287 | 1% | 100% |
| Portola Valley, CA | 4,353 | 1% | 100% |
| Emerald Lake Hills, CA | 4,278 | 0% | 100% |
| Broadmoor, CA | 4,176 | 0% | 100% |
| Highlands-Baywood Park, CA | 4,027 | 0% | 100% |
| West Menlo Park, CA | 3,659 | 0% | 100% |
| Loyola, CA | 3,261 | 0% | 100% |
| Moss Beach, CA | 3,103 | 0% | 100% |
| Cupertino, CA | 58,302 | 0% | 5% |
| Montara, CA | 2,909 | 0% | 100% |
| Colma, CA | 1,792 | 0% | 100% |
| Brisbane, CA | 4,282 | 1% | 42% |
| Ladera, CA | 1,426 | 0% | 100% |
| La Honda, CA | 928 | 1% | 100% |
| Pescadero, CA | 643 | 1% | 100% |
| Loma Mar, CA | 113 | 0% | 100% |
Largest Telephone Carriers
Landline
| Prefixes | Carrier |
|---|---|
| 45% | Pacific Bell |
| 4% | Teleport Group - San Francisco |
| 3% | Pac - West Telecomm |
| 3% | Level 3 |
| 3% | Us Telepacific |
| 3% | Allegiance Telecom |
| 2% | Xo |
| 17% | Other |
Wireless
| Prefixes | Carrier |
|---|---|
| 6% | Cingular |
| 5% | Sprint |
| 3% | Verizon Wireless |
| 2% | T-mobile |
| 1% | Metro PCS |
| 1% | American Messaging (am) |
| 1% | American Messaging Services |
| 1% | Other |
Prefixes
Assigned
Usage
Prefix
Usage
Primary City
Carrier
Introduced
(650) 200-
San Mateo
O1 Comms
07/06/1997
(650) 201-
San Bruno
Sprint
06/30/2001
(650) 202-
San Mateo
The Telephone Connection Local Services
03/03/2001
(650) 204-
San Francisco
Tw Telecom Of California Lp
05/10/1999
(650) 205-
San Bruno
USA Mobility Wireless
08/14/1998
(650) 206-
Woodside
Mpower Comms Corp
02/27/1999
(650) 207-
Redwood City
Verizon Wireless
11/20/1998
(650) 208-
Redwood City
Verizon Wireless
11/20/1998
(650) 209-
San Jose
U.s. Telepacific Corp.
05/10/1999
(650) 210-
Mountain View
Pacific Bell
05/10/1999
(650) 212-
San Mateo
Pacific Bell
05/10/1999
(650) 213-
Palo Alto
Pacific Bell
05/10/1999
(650) 214-
Mountain View
Mci Worldcom Comms, CA
02/15/2007
(650) 215-
Mountain View
Global Crossing Local Services
05/10/1999
(650) 216-
Redwood City
Pacific Bell
05/10/1999
(650) 217-
San Mateo
USA Mobility Wireless
08/14/1998
(650) 218-
Brisbane
Sprint
08/14/1998
(650) 219-
San Bruno
Sprint
08/14/1998
(650) 220-
San Mateo
American Messaging (am)
08/14/1998
(650) 221-
Redwood City
American Messaging Services
08/14/1998
(650) 222-
San Mateo
Sprint
11/20/1998
(650) 223-
Palo Alto
Mpower Comms Corp
07/06/1997
(650) 224-
Mountain View
Cingular Wireless
11/20/1998
(650) 225-
San Bruno
Pacific Bell
07/06/1997
(650) 226-
Redwood City
Mci Worldcom Comms, CA
07/06/1997
(650) 227-
San Mateo
Xo California
08/14/1998
(650) 228-
San Bruno
Xo California
08/14/1998
(650) 229-
Fremont
Xo California
08/14/1998
(650) 230-
Fremont
Xo California
08/14/1998
(650) 231-
Millbrae
Xo California
08/14/1998
(650) 232-
San Carlos
Xo California
08/14/1998
(650) 233-
Palo Alto
Pacific Bell
07/06/1997
(650) 234-
Palo Alto
Pacific Bell
07/06/1997
(650) 235-
San Mateo
Brooks Fiber Comms
07/06/1997
(650) 236-
Palo Alto
Pacific Bell
07/06/1997
(650) 237-
Mountain View
Pacific Bell
07/06/1997
(650) 238-
San Bruno
Mci Worldcom Comms, CA
07/06/1997
(650) 239-
Millbrae
Pac - West Telecomm
08/14/1998
(650) 240-
San Mateo
Pac - West Telecomm
08/14/1998
(650) 241-
Redwood City
Level 3 Comms
08/14/1998
(650) 242-
San Mateo
Level 3 Comms
08/14/1998
(650) 243-
San Bruno
U.s. Telepacific Corp.
02/27/1999
(650) 244-
San Bruno
Pacific Bell
07/06/1997
(650) 245-
San Mateo
Cingular Wireless
11/20/1998
(650) 246-
San Bruno
Pacific Bell
07/06/1997
(650) 247-
Palo Alto
American Messaging Services
11/20/1998
(650) 248-
Palo Alto
Sprint
06/13/2000
(650) 249-
Redwood City
Pac - West Telecomm
07/22/1999
(650) 251-
Palo Alto
Pacific Bell
07/22/1999
(650) 252-
Palo Alto
Peerless Network
04/13/2012
(650) 253-
Mountain View
Mci Worldcom Comms, CA
04/27/2004
(650) 254-
Mountain View
Pacific Bell
07/06/1997
(650) 255-
San Bruno
Cingular Wireless
02/27/1999
(650) 256-
San Bruno
American Messaging (am)
07/22/1999
(650) 257-
Redwood City
Global Crossing Local Services
07/22/1999
(650) 258-
Palo Alto
Teleport Comms Group - San Francisco
09/13/2011
(650) 259-
Millbrae
Pacific Bell
07/06/1997
(650) 260-
Redwood City
AT&T Local
11/20/1998
(650) 261-
Redwood City
Pacific Bell
07/06/1997
(650) 262-
Pescadero
Level 3 Comms
11/20/1998
(650) 263-
Moss Beach
Mci Worldcom Comms, CA
07/22/1999
(650) 264-
San Carlos
AT&T Local
02/27/1999
(650) 265-
Mountain View
AT&T Local
08/14/1998
(650) 266-
San Bruno
Pacific Bell
07/06/1997
(650) 267-
San Francisco
Level 3 Comms
11/20/1998
(650) 268-
Pescadero
Xo California
07/22/1999
(650) 269-
Palo Alto
Verizon Wireless
07/22/1999
(650) 270-
San Bruno
Sprint
11/20/1998
(650) 271-
San Francisco
Metro PCS
08/22/2001
(650) 272-
Fremont
Xo California
08/19/2013
(650) 273-
San Bruno
Astound Broadband
10/13/1999
(650) 274-
Brisbane
Sprint
07/22/1999
(650) 275-
Woodside
Xo California
07/22/1999
(650) 276-
Half Moon Bay
Tw Telecom Of California Lp
07/22/1999
(650) 277-
Redwood City
33 Wireless
11/20/1998
(650) 278-
San Mateo
T-mobile USA
12/27/2001
(650) 279-
Mountain View
Verizon Wireless
07/22/1999
(650) 280-
Mountain View
Sprint
05/10/1999
(650) 281-
Brisbane
Sprint
07/22/1999
(650) 282-
Mountain View
Astound Broadband
10/13/1999
(650) 283-
Palo Alto
T-mobile USA
12/27/2001
(650) 284-
Half Moon Bay
Pac - West Telecomm
07/22/1999
(650) 285-
Palo Alto
Bandwidth.com
10/21/2013
(650) 286-
San Mateo
Pacific Bell
07/06/1997
(650) 287-
San Mateo
Pacific Bell
07/06/1997
(650) 288-
San Mateo
Level 3 Comms
11/20/1998
(650) 289-
Palo Alto
Pacific Bell
01/14/2000
(650) 290-
Pacifica
Metro PCS
08/22/2001
(650) 291-
San Bruno
Verizon Wireless
07/22/1999
(650) 292-
San Mateo
Broadwing Comms
11/20/1998
(650) 293-
San Mateo
Pacific Bell
11/20/1998
(650) 294-
San Mateo
Pacific Bell
07/06/1997
(650) 295-
San Mateo
Pacific Bell
07/06/1997
(650) 296-
San Bruno
Cingular Wireless
07/22/1999
(650) 297-
Pescadero
Tw Telecom Of California Lp
07/22/1999
(650) 298-
Redwood City
Pacific Bell
11/20/1998
(650) 299-
Redwood City
Pacific Bell
07/06/1997
(650) 300-
Palo Alto
Cf Comms DBA Telekenex
09/18/2012
(650) 301-
Colma
Pacific Bell
07/06/1997
(650) 302-
Millbrae
Cingular Wireless
10/13/1999
(650) 303-
San Bruno
Cingular Wireless
10/13/1999
(650) 305-
Los Altos
T-mobile USA
09/19/2002
(650) 306-
Redwood City
Pacific Bell
07/06/1997
(650) 307-
Millbrae
T-mobile USA
12/27/2001
(650) 308-
Palo Alto
Pacific Bell
12/23/2010
(650) 312-
San Mateo
Pacific Bell
07/06/1997
(650) 314-
Mountain View
Pacific Bell
11/20/1998
(650) 315-
Brisbane
Sprint
10/13/1999
(650) 316-
Mountain View
Teleport Comms Group - San Francisco
07/06/1997
(650) 317-
Mountain View
USA Mobility Wireless
07/06/1997
(650) 318-
Mountain View
Pacific Bell
11/20/1998
(650) 319-
Sunnyvale
Allegiance Telecom
02/27/1999
(650) 320-
Palo Alto
Pacific Bell
11/20/1998
(650) 321-
Palo Alto
Pacific Bell
07/06/1997
(650) 322-
Palo Alto
Pacific Bell
07/06/1997
(650) 323-
Palo Alto
Pacific Bell
07/06/1997
(650) 324-
Palo Alto
Pacific Bell
07/06/1997
(650) 325-
Palo Alto
Pacific Bell
07/06/1997
(650) 326-
Palo Alto
Pacific Bell
07/06/1997
(650) 327-
Palo Alto
Pacific Bell
07/06/1997
(650) 328-
Palo Alto
Pacific Bell
07/06/1997
(650) 329-
Palo Alto
Pacific Bell
07/06/1997
(650) 330-
Palo Alto
Pacific Bell
11/20/1998
(650) 331-
Palo Alto
Broadwing Comms
11/20/1998
(650) 332-
Woodside
Pac - West Telecomm
11/20/1998
(650) 333-
San Bruno
Sprint
11/20/1998
(650) 335-
Mountain View
Pacific Bell
07/06/1997
(650) 336-
Mountain View
Pacific Bell
07/06/1997
(650) 337-
Pescadero
O1 Comms
07/22/1999
(650) 339-
San Carlos
Verizon Wireless
05/10/1999
(650) 340-
San Mateo
Pacific Bell
07/06/1997
(650) 341-
San Mateo
Pacific Bell
07/06/1997
(650) 342-
San Mateo
Pacific Bell
07/06/1997
(650) 343-
San Mateo
Pacific Bell
07/06/1997
(650) 344-
San Mateo
Pacific Bell
07/06/1997
(650) 345-
San Mateo
Pacific Bell
07/06/1997
(650) 346-
Brisbane
Sprint
05/10/1999
(650) 347-
San Mateo
Pacific Bell
07/06/1997
(650) 348-
San Mateo
Pacific Bell
07/06/1997
(650) 349-
San Mateo
Pacific Bell
07/06/1997
(650) 350-
San Mateo
Pacific Bell
05/10/1999
(650) 351-
San Francisco
Global Crossing Local Services
05/10/1999
(650) 352-
Palo Alto
Global Crossing Local Services
05/10/1999
(650) 353-
Palo Alto
Level 3 Comms
11/20/1998
(650) 354-
Palo Alto
Pacific Bell
07/06/1997
(650) 355-
Pacifica
Pacific Bell
07/06/1997
(650) 356-
San Mateo
Pacific Bell
11/20/1998
(650) 357-
San Mateo
Pacific Bell
08/14/1998
(650) 358-
San Mateo
Pacific Bell
07/06/1997
(650) 359-
Pacifica
Pacific Bell
07/06/1997
(650) 360-
San Bruno
Pac - West Telecomm
05/10/1999
(650) 361-
Redwood City
Pacific Bell
07/06/1997
(650) 362-
Redwood City
Allegiance Telecom
02/27/1999
(650) 363-
Redwood City
Pacific Bell
07/06/1997
(650) 364-
Redwood City
Pacific Bell
07/06/1997
(650) 365-
Redwood City
Pacific Bell
07/06/1997
(650) 366-
Redwood City
Pacific Bell
07/06/1997
(650) 367-
Redwood City
Pacific Bell
07/06/1997
(650) 368-
Redwood City
Pacific Bell
07/06/1997
(650) 369-
Redwood City
Pacific Bell
07/06/1997
(650) 370-
Palo Alto
American Messaging (am)
07/22/1999
(650) 371-
San Mateo
USA Mobility Wireless
07/06/1997
(650) 372-
San Mateo
Pacific Bell
07/06/1997
(650) 373-
San Mateo
Pacific Bell
07/06/1997
(650) 374-
Redwood City
American Messaging (am)
07/22/1999
(650) 375-
San Mateo
Pacific Bell
07/06/1997
(650) 376-
San Mateo
Global Crossing Local Services
02/27/1999
(650) 377-
San Mateo
Pacific Bell
07/06/1997
(650) 378-
San Mateo
Pacific Bell
07/06/1997
(650) 380-
Palo Alto
Verizon Wireless
11/29/2001
(650) 381-
Redwood City
Pacific Bell
03/03/2001
(650) 383-
San Jose
Teleport Comms Group - San Francisco
10/13/1999
(650) 384-
Palo Alto
Teleport Comms Group - San Francisco
10/13/1999
(650) 385-
Redwood City
Teleport Comms Group - San Francisco
10/13/1999
(650) 386-
San Jose
Teleport Comms Group - San Francisco
10/13/1999
(650) 387-
Palo Alto
Cingular Wireless
03/03/2001
(650) 388-
Palo Alto
MCI Metro ATS
08/14/1998
(650) 389-
San Mateo
MCI Metro ATS
08/14/1998
(650) 390-
Mountain View
Pacific Bell
07/06/1997
(650) 391-
Palo Alto
Tw Telecom Of California Lp
08/14/1998
(650) 392-
San Francisco
Tw Telecom Of California Lp
08/14/1998
(650) 393-
San Mateo
Tw Telecom Of California Lp
08/14/1998
(650) 394-
San Carlos
Tw Telecom Of California Lp
08/14/1998
(650) 395-
Redwood City
Tw Telecom Of California Lp
08/14/1998
(650) 396-
Mountain View
T-mobile USA
08/14/1998
(650) 397-
Los Altos
O1 Comms
05/10/1999
(650) 399-
Redwood City
O1 Comms
06/30/2001
(650) 400-
Redwood City
Verizon Wireless
11/20/1998
(650) 401-
San Mateo
Pacific Bell
07/06/1997
(650) 403-
San Mateo
Allegiance Telecom
02/27/1999
(650) 404-
Mountain View
Pacific Bell
07/06/1997
(650) 406-
Mountain View
American Messaging Services
01/14/2000
(650) 408-
San Mateo
American Messaging Services
08/14/1998
(650) 409-
San Francisco
U.s. Telepacific Corp.
10/11/1997
(650) 412-
San Carlos
Allegiance Telecom
02/27/1999
(650) 413-
San Carlos
Pacific Bell
07/06/1997
(650) 416-
San Francisco
Mpower Comms Corp
10/11/1997
(650) 417-
San Jose
U.s. Telepacific Corp.
10/11/1997
(650) 419-
La Honda
Level 3 Comms
10/13/1999
(650) 421-
Redwood City
U.s. Telepacific Corp.
07/22/1999
(650) 422-
Palo Alto
Verizon Wireless
04/19/2013
(650) 423-
Redwood City
Pac - West Telecomm
07/06/1997
(650) 424-
Palo Alto
Pacific Bell
07/06/1997
(650) 425-
San Mateo
MCI Metro ATS
07/06/1997
(650) 426-
Mountain View
MCI Metro ATS
07/06/1997
(650) 427-
Palo Alto
Mci Worldcom Comms, CA
12/27/2006
(650) 428-
Mountain View
Pacific Bell
07/06/1997
(650) 429-
Redwood City
Mci Worldcom Comms, CA
07/06/1997
(650) 430-
San Mateo
T-mobile USA
12/27/2001
(650) 432-
San Mateo
Pacific Bell
07/06/1997
(650) 433-
Palo Alto
Allegiance Telecom
10/13/1999
(650) 434-
Woodside
U.s. Telepacific Corp.
10/13/1999
(650) 437-
San Mateo
Bandwidth.com
03/03/2014
(650) 438-
San Bruno
Cingular Wireless
10/18/2001
(650) 440-
Half Moon Bay
T-mobile USA
09/19/2002
(650) 443-
Millbrae
U.s. Telepacific Corp.
05/10/1999
(650) 444-
Palo Alto
Sprint
11/20/1998
(650) 445-
San Mateo
T-mobile USA
07/22/2013
(650) 446-
Woodside
O1 Comms
04/23/2001
(650) 449-
San Francisco
Allegiance Telecom
10/31/2000
(650) 450-
Mountain View
Cingular Wireless
01/28/2002
(650) 451-
San Francisco
T-mobile USA
05/10/1999
(650) 452-
San Francisco
AT&T Local
11/20/1998
(650) 453-
San Carlos
Global Crossing Local Services
05/10/1999
(650) 454-
Redwood City
Cingular Wireless
01/28/2002
(650) 455-
Millbrae
Cingular Wireless
05/10/1999
(650) 456-
Pescadero
Pac - West Telecomm
05/10/1999
(650) 458-
San Mateo
Astound Broadband
10/13/1999
(650) 461-
Palo Alto
Pacific Bell
11/20/1998
(650) 462-
Palo Alto
Pacific Bell
07/06/1997
(650) 463-
Palo Alto
Pacific Bell
07/06/1997
(650) 464-
Redwood City
Verizon Wireless
11/20/1998
(650) 465-
Redwood City
Verizon Wireless
01/25/1998
(650) 466-
San Francisco
Pacific Bell
11/20/1998
(650) 467-
San Bruno
Pacific Bell
01/14/2000
(650) 468-
Palo Alto
Sprint
04/23/2001
(650) 469-
Los Altos
Allegiance Telecom
02/27/1999
(650) 470-
Palo Alto
Pacific Bell
01/25/1998
(650) 471-
San Jose
Mpower Comms Corp
10/11/1997
(650) 472-
Los Altos
Broadwing Comms
02/27/1999
(650) 473-
Palo Alto
Pacific Bell
07/06/1997
(650) 474-
Redwood City
Pacific Bell
01/14/2000
(650) 475-
Fremont
Xo California
05/18/1998
(650) 477-
San Mateo
Verizon Wireless
06/13/2000
(650) 479-
Half Moon Bay
U.s. Telepacific Corp.
08/20/2000
(650) 480-
Redwood City
Brooks Fiber Comms
07/06/1997
(650) 481-
Redwood City
Mci Worldcom Comms, CA
07/06/1997
(650) 482-
Redwood City
Pacific Bell
07/06/1997
(650) 483-
San Mateo
Cingular Wireless
01/25/1998
(650) 485-
Palo Alto
Pacific Bell
06/13/2000
(650) 486-
San Carlos
Pacific Bell
08/20/2000
(650) 487-
La Honda
U.s. Telepacific Corp.
08/20/2000
(650) 488-
San Francisco
Teleport Comms Group - San Francisco
02/27/1999
(650) 489-
San Carlos
Level 3 Comms
10/13/1999
(650) 490-
Millbrae
Cingular Wireless
01/28/2002
(650) 491-
San Bruno
Broadwing Comms
03/03/2001
(650) 492-
Mountain View
Cingular Wireless
01/28/2002
(650) 493-
Palo Alto
Pacific Bell
07/06/1997
(650) 494-
Palo Alto
Pacific Bell
07/06/1997
(650) 496-
Palo Alto
Pacific Bell
07/06/1997
(650) 497-
Palo Alto
Level 3 Comms
07/06/1997
(650) 498-
Palo Alto
Level 3 Comms
07/06/1997
(650) 500-
San Carlos
American Messaging Services
08/14/1998
(650) 503-
Redwood City
Mpower Comms Corp
10/11/1997
(650) 504-
San Mateo
Cingular Wireless
11/20/1998
(650) 506-
San Carlos
Pacific Bell
07/06/1997
(650) 508-
San Carlos
Pacific Bell
07/06/1997
(650) 513-
San Mateo
Pacific Bell
07/06/1997
(650) 515-
San Bruno
Level 3 Comms
07/22/1999
(650) 516-
Pacifica
U.s. Telepacific Corp.
01/14/2000
(650) 517-
San Carlos
U.s. Telepacific Corp.
01/14/2000
(650) 518-
Los Altos
Metro PCS
09/21/2001
(650) 520-
Brisbane
Sprint
11/20/1998
(650) 521-
Palo Alto
Comcast Phone
08/04/2005
(650) 522-
San Mateo
Pacific Bell
11/20/1998
(650) 523-
San Mateo
Pac - West Telecomm
07/06/1997
(650) 524-
San Mateo
Pacific Bell
07/06/1997
(650) 525-
San Mateo
Pacific Bell
07/06/1997
(650) 526-
Mountain View
Pacific Bell
07/06/1997
(650) 527-
Mountain View
Pacific Bell
10/31/2000
(650) 528-
Mountain View
Pacific Bell
07/06/1997
(650) 529-
Woodside
Pacific Bell
07/06/1997
(650) 530-
Woodside
Teleport Comms Group - San Francisco
07/06/1997
(650) 532-
San Mateo
Mpower Comms Corp
07/06/1997
(650) 533-
Brisbane
Sprint
01/25/1998
(650) 534-
San Bruno
Brooks Fiber Comms
10/11/1997
(650) 535-
Moss Beach
U.s. Telepacific Corp.
08/20/2000
(650) 537-
Mountain View
Sprint
08/20/2000
(650) 538-
Pescadero
U.s. Telepacific Corp.
08/20/2000
(650) 539-
San Mateo
T-mobile USA
05/18/1998
(650) 542-
Redwood City
Pacific Bell
08/20/2000
(650) 543-
San Jose
U.s. Telepacific Corp.
02/27/1999
(650) 544-
Brisbane
Sprint
10/13/1999
(650) 545-
Mountain View
North County Comms Corp.
01/14/2000
(650) 548-
San Mateo
Pacific Bell
07/06/1997
(650) 549-
Redwood City
MCI Metro ATS
07/06/1997
(650) 550-
Colma
Pacific Bell
08/14/1998
(650) 551-
San Carlos
Pacific Bell
08/14/1998
(650) 552-
Millbrae
Pacific Bell
08/14/1998
(650) 553-
San Bruno
Pacific Bell
08/14/1998
(650) 554-
San Mateo
Pacific Bell
08/14/1998
(650) 556-
Redwood City
Pacific Bell
08/14/1998
(650) 557-
Pacifica
Pacific Bell
08/14/1998
(650) 558-
San Mateo
Pacific Bell
08/14/1998
(650) 559-
Los Altos
Pacific Bell
08/14/1998
(650) 560-
Half Moon Bay
Pacific Bell
08/14/1998
(650) 561-
Palo Alto
Pacific Bell
08/14/1998
(650) 562-
Redwood City
Pacific Bell
07/06/1997
(650) 563-
Moss Beach
Pacific Bell
08/14/1998
(650) 564-
Mountain View
Pacific Bell
08/14/1998
(650) 565-
Palo Alto
Pacific Bell
08/14/1998
(650) 566-
Palo Alto
Pacific Bell
08/14/1998
(650) 567-
Mountain View
Pacific Bell
08/14/1998
(650) 568-
Redwood City
Pacific Bell
07/06/1997
(650) 569-
Redwood City
Pacific Bell
07/06/1997
(650) 570-
San Mateo
Pacific Bell
07/06/1997
(650) 571-
San Mateo
Pacific Bell
07/06/1997
(650) 572-
San Mateo
Pacific Bell
07/06/1997
(650) 573-
San Mateo
Pacific Bell
07/06/1997
(650) 574-
San Mateo
Pacific Bell
07/06/1997
(650) 575-
Palo Alto
Cingular Wireless
01/14/2000
(650) 576-
San Mateo
Cingular Wireless
01/14/2000
(650) 577-
San Mateo
Pacific Bell
07/06/1997
(650) 578-
San Mateo
Pacific Bell
07/06/1997
(650) 579-
San Mateo
Pacific Bell
07/06/1997
(650) 580-
San Bruno
Cingular Wireless
05/18/1998
(650) 581-
San Mateo
Teleport Comms Group - San Francisco
10/11/1997
(650) 583-
San Bruno
Pacific Bell
07/06/1997
(650) 584-
Mountain View
Pacific Bell
11/20/1998
(650) 585-
San Carlos
Broadwing Comms
08/20/2000
(650) 587-
Redwood City
Broadwing Comms
08/20/2000
(650) 588-
San Bruno
Pacific Bell
07/06/1997
(650) 589-
San Bruno
Pacific Bell
07/06/1997
(650) 590-
San Carlos
Pac - West Telecomm
07/06/1997
(650) 591-
San Carlos
Pacific Bell
07/06/1997
(650) 592-
San Carlos
Pacific Bell
07/06/1997
(650) 593-
San Carlos
Pacific Bell
07/06/1997
(650) 594-
San Carlos
Pacific Bell
07/06/1997
(650) 595-
San Carlos
Pacific Bell
07/06/1997
(650) 596-
San Carlos
Pacific Bell
07/06/1997
(650) 597-
San Carlos
Utility Telephone
10/04/2008
(650) 598-
San Carlos
Pacific Bell
07/06/1997
(650) 599-
Redwood City
Pacific Bell
07/06/1997
(650) 600-
Palo Alto
Cf Comms DBA Telekenex
06/12/2012
(650) 603-
Mountain View
Pacific Bell
07/06/1997
(650) 604-
Mountain View
Pacific Bell
07/06/1997
(650) 605-
Mountain View
Allegiance Telecom
02/27/1999
(650) 607-
San Carlos
Pacific Bell
11/20/1998
(650) 610-
San Carlos
Pacific Bell
07/06/1997
(650) 612-
San Mateo
Pacific Bell
07/06/1997
(650) 614-
Palo Alto
Pacific Bell
07/06/1997
(650) 615-
San Bruno
Pacific Bell
07/06/1997
(650) 616-
San Bruno
Pacific Bell
11/20/1998
(650) 617-
Palo Alto
Pacific Bell
07/06/1997
(650) 618-
Palo Alto
Pac - West Telecomm
07/06/1997
(650) 619-
San Mateo
Cingular Wireless
11/20/1998
(650) 620-
San Carlos
Pacific Bell
11/20/1998
(650) 621-
Palo Alto
Pacific Bell
11/20/1998
(650) 622-
San Carlos
Pacific Bell
11/20/1998
(650) 623-
Mountain View
Pacific Bell
11/20/1998
(650) 624-
San Bruno
Pacific Bell
11/20/1998
(650) 625-
Mountain View
Pacific Bell
11/20/1998
(650) 627-
San Mateo
Pacific Bell
11/20/1998
(650) 628-
San Carlos
MCI Metro ATS
07/06/1997
(650) 630-
Palo Alto
Metro PCS
08/22/2001
(650) 631-
San Carlos
Pacific Bell
07/06/1997
(650) 632-
San Carlos
Pacific Bell
07/06/1997
(650) 633-
San Carlos
Pacific Bell
07/06/1997
(650) 634-
San Bruno
Pacific Bell
07/06/1997
(650) 635-
San Bruno
Pacific Bell
07/06/1997
(650) 636-
San Francisco
Allegiance Telecom
02/27/1999
(650) 637-
San Carlos
Pacific Bell
07/06/1997
(650) 638-
San Mateo
Pacific Bell
07/06/1997
(650) 639-
San Mateo
American Messaging (am)
07/22/1999
(650) 641-
Mountain View
Broadwing Comms
08/20/2000
(650) 642-
San Mateo
Sprint
07/22/1999
(650) 644-
Palo Alto
Pac - West Telecomm
01/25/1998
(650) 645-
San Mateo
Teleport Comms Group - San Francisco
02/27/1999
(650) 646-
Palo Alto
T-mobile USA
10/31/2000
(650) 648-
San Francisco
Allegiance Telecom
02/27/1999
(650) 649-
Redwood City
Pac - West Telecomm
05/18/1998
(650) 651-
Millbrae
Mci Worldcom Comms, CA
07/06/1997
(650) 652-
Millbrae
Pacific Bell
07/06/1997
(650) 653-
Redwood City
Mci Worldcom Comms, CA
07/06/1997
(650) 654-
San Carlos
Pacific Bell
07/06/1997
(650) 655-
San Mateo
Pacific Bell
07/06/1997
(650) 656-
Palo Alto
Level 3 Comms
04/07/2014
(650) 662-
La Honda
O1 Comms
03/22/2001
(650) 666-
Palo Alto
Cf Comms DBA Telekenex
06/12/2012
(650) 669-
Mountain View
Metro PCS
09/21/2001
(650) 670-
Redwood City
Sprint
08/20/2000
(650) 673-
La Honda
Sbc Internet Services
12/14/2009
(650) 676-
S San Fran
Utility Telephone
03/07/2005
(650) 678-
San Mateo
Verizon Wireless
05/10/1999
(650) 679-
Redwood City
Astound Broadband
10/13/1999
(650) 681-
Palo Alto
O1 Comms
05/17/2001
(650) 682-
Palo Alto
The Telephone Connection Local Services
10/31/2000
(650) 683-
Woodside
Sprint
10/31/2000
(650) 684-
Millbrae
Pac - West Telecomm
07/06/1997
(650) 685-
San Mateo
Pacific Bell
07/06/1997
(650) 686-
San Francisco
MCI Metro ATS
07/06/1997
(650) 687-
Palo Alto
Mci Worldcom Comms, CA
07/06/1997
(650) 688-
Palo Alto
Pacific Bell
07/06/1997
(650) 689-
San Francisco
Teleport Comms Group - San Francisco
07/06/1997
(650) 690-
Palo Alto
AT&T Local
05/18/1998
(650) 691-
Mountain View
Pacific Bell
07/06/1997
(650) 692-
Millbrae
Pacific Bell
07/06/1997
(650) 693-
Mountain View
Broadwing Comms
11/20/1998
(650) 694-
Mountain View
Pacific Bell
07/06/1997
(650) 696-
San Mateo
Pacific Bell
07/06/1997
(650) 697-
Millbrae
Pacific Bell
07/06/1997
(650) 701-
Redwood City
Pacific Bell
10/13/1999
(650) 703-
San Mateo
Cingular Wireless
11/20/1998
(650) 704-
Palo Alto
Cingular Wireless
11/20/1998
(650) 712-
Half Moon Bay
Pacific Bell
07/06/1997
(650) 713-
Half Moon Bay
Allegiance Telecom
02/27/1999
(650) 714-
Palo Alto
Cingular Wireless
10/13/1999
(650) 716-
Redwood City
Xo California
01/14/2000
(650) 718-
Moss Beach
Teleport Comms Group - San Francisco
07/06/1997
(650) 719-
Moss Beach
Allegiance Telecom
02/27/1999
(650) 720-
Half Moon Bay
MCI Metro ATS
07/06/1997
(650) 721-
Palo Alto
Level 3 Comms
07/22/1999
(650) 722-
Redwood City
Verizon Wireless
06/13/2000
(650) 723-
Palo Alto
Level 3 Comms
07/06/1997
(650) 724-
Palo Alto
Level 3 Comms
07/06/1997
(650) 725-
Palo Alto
Level 3 Comms
07/06/1997
(650) 726-
Half Moon Bay
Pacific Bell
07/06/1997
(650) 727-
Bandwidth.com
06/03/2014
(650) 728-
Moss Beach
Pacific Bell
07/06/1997
(650) 729-
Half Moon Bay
Teleport Comms Group - San Francisco
07/06/1997
(650) 730-
San Carlos
Verizon Wireless
01/14/2000
(650) 731-
San Francisco
Astound Broadband
01/14/2000
(650) 732-
Millbrae
Verizon Wireless
01/14/2000
(650) 733-
San Francisco
Allegiance Telecom
02/27/1999
(650) 735-
San Francisco
Teleport Comms Group - San Francisco
07/06/1997
(650) 736-
Palo Alto
Level 3 Comms
07/06/1997
(650) 737-
San Bruno
Pacific Bell
07/06/1997
(650) 738-
Pacifica
Pacific Bell
07/06/1997
(650) 739-
Palo Alto
Pacific Bell
08/20/2000
(650) 740-
San Mateo
Cingular Wireless
01/25/1998
(650) 741-
San Bruno
Pacific Bell
07/06/1997
(650) 742-
San Bruno
Pacific Bell
07/06/1997
(650) 743-
Redwood City
Cingular Wireless
08/20/2000
(650) 745-
San Francisco
Teleport Comms Group - San Francisco
07/06/1997
(650) 746-
Colma
Pacific Bell
07/06/1997
(650) 747-
La Honda
Pacific Bell
07/06/1997
(650) 748-
La Honda
Teleport Comms Group - San Francisco
07/06/1997
(650) 749-
La Honda
Allegiance Telecom
02/27/1999
(650) 752-
Palo Alto
Pacific Bell
05/10/1999
(650) 754-
Colma
Pacific Bell
07/06/1997
(650) 755-
Colma
Pacific Bell
07/06/1997
(650) 756-
Colma
Pacific Bell
07/06/1997
(650) 757-
Colma
Pacific Bell
07/06/1997
(650) 758-
Colma
Pacific Bell
07/06/1997
(650) 759-
San Mateo
Verizon Wireless
08/20/2000
(650) 761-
San Bruno
Pacific Bell
07/06/1997
(650) 762-
San Mateo
Pacific Bell
05/18/1998
(650) 763-
San Francisco
Level 3 Comms
05/18/1998
(650) 766-
San Mateo
Cingular Wireless
11/20/1998
(650) 769-
San Carlos
Brooks Fiber Comms
08/14/1998
(650) 771-
Redwood City
Metro PCS
09/21/2001
(650) 773-
San Mateo
Verizon Wireless
11/29/2001
(650) 776-
Palo Alto
Sprint
08/20/2000
(650) 777-
Millbrae
Pacific Bell
08/14/1998
(650) 779-
Redwood City
Teleport Comms Group - San Francisco
07/06/1997
(650) 780-
Redwood City
Pacific Bell
07/06/1997
(650) 784-
San Bruno
Sprint
10/31/2000
(650) 786-
Redwood City
Pacific Bell
07/06/1997
(650) 787-
San Mateo
Cingular Wireless
01/25/1998
(650) 793-
Mountain View
Verizon Wireless
03/03/2001
(650) 794-
San Bruno
Pacific Bell
07/06/1997
(650) 795-
La Honda
MCI Metro ATS
07/06/1997
(650) 796-
Palo Alto
Cingular Wireless
07/06/1997
(650) 798-
Palo Alto
Teleport Comms Group - San Francisco
07/06/1997
(650) 799-
Palo Alto
Cingular Wireless
07/22/1999
(650) 800-
Palo Alto
Cf Comms DBA Telekenex
01/06/2012
(650) 801-
San Carlos
Teleport Comms Group - San Francisco
07/06/1997
(650) 802-
San Carlos
Pacific Bell
07/06/1997
(650) 804-
Palo Alto
Cingular Wireless
08/21/2002
(650) 808-
San Bruno
Pacific Bell
11/20/1998
(650) 810-
San Jose
U.s. Telepacific Corp.
05/10/1999
(650) 812-
Palo Alto
Pacific Bell
07/06/1997
(650) 813-
Palo Alto
Pacific Bell
07/06/1997
(650) 814-
Palo Alto
Sprint
11/20/1998
(650) 815-
Sunnyvale
Brooks Fiber Comms
07/06/1997
(650) 817-
Redwood City
Pacific Bell
08/14/1998
(650) 821-
San Francisco
Teleport Comms Group - San Francisco
10/13/1999
(650) 823-
Los Altos
Cingular Wireless
08/20/2000
(650) 825-
San Francisco
MCI Metro ATS
07/06/1997
(650) 826-
San Bruno
Sprint
08/20/2000
(650) 827-
San Bruno
Pacific Bell
07/06/1997
(650) 829-
San Bruno
Pacific Bell
07/06/1997
(650) 830-
San Carlos
Level 3 Comms
01/25/2001
(650) 832-
San Carlos
Mpower Comms Corp
10/11/1997
(650) 833-
Palo Alto
Pacific Bell
07/06/1997
(650) 834-
San Bruno
Metro PCS
09/21/2001
(650) 835-
San Bruno
O1 Comms
01/25/2001
(650) 837-
San Bruno
Pacific Bell
06/13/2000
(650) 838-
Palo Alto
Pacific Bell
06/13/2000
(650) 839-
Redwood City
Pacific Bell
06/13/2000
(650) 842-
Palo Alto
Pacific Bell
07/06/1997
(650) 843-
Palo Alto
Pacific Bell
07/06/1997
(650) 845-
Palo Alto
Pacific Bell
07/06/1997
(650) 846-
Palo Alto
Pacific Bell
07/06/1997
(650) 847-
Palo Alto
MCI Metro ATS
07/06/1997
(650) 849-
Palo Alto
Pacific Bell
07/06/1997
(650) 850-
Woodside
Allegiance Telecom
02/27/1999
(650) 851-
Woodside
Pacific Bell
07/06/1997
(650) 852-
Palo Alto
Pacific Bell
07/06/1997
(650) 853-
Palo Alto
Pacific Bell
07/06/1997
(650) 854-
Palo Alto
Pacific Bell
07/06/1997
(650) 855-
Palo Alto
Pacific Bell
07/06/1997
(650) 856-
Palo Alto
Pacific Bell
07/06/1997
(650) 857-
Palo Alto
Pacific Bell
07/06/1997
(650) 858-
Palo Alto
Pacific Bell
07/06/1997
(650) 859-
Palo Alto
Pacific Bell
07/06/1997
(650) 860-
Pescadero
Broadwing Comms
11/20/1998
(650) 861-
Mountain View
T-mobile USA
09/19/2002
(650) 862-
Palo Alto
Cingular Wireless
01/14/2000
(650) 863-
San Mateo
Cingular Wireless
01/14/2000
(650) 864-
Mountain View
Pacific Bell
08/20/2000
(650) 866-
San Bruno
Pacific Bell
07/06/1997
(650) 867-
San Mateo
Cingular Wireless
01/25/1998
(650) 868-
Redwood City
Cingular Wireless
02/27/1999
(650) 869-
San Bruno
Pacific Bell
07/06/1997
(650) 870-
San Bruno
Pac - West Telecomm
07/06/1997
(650) 871-
San Bruno
Pacific Bell
07/06/1997
(650) 872-
San Bruno
Pacific Bell
07/06/1997
(650) 873-
San Bruno
Pacific Bell
07/06/1997
(650) 874-
San Bruno
Pacific Bell
07/06/1997
(650) 875-
San Bruno
Pacific Bell
07/06/1997
(650) 876-
San Bruno
Pacific Bell
07/06/1997
(650) 877-
San Bruno
Pacific Bell
07/06/1997
(650) 878-
Colma
Pacific Bell
07/06/1997
(650) 879-
Pescadero
Pacific Bell
07/06/1997
(650) 881-
Pescadero
Teleport Comms Group - San Francisco
02/27/1999
(650) 882-
Pescadero
Allegiance Telecom
02/27/1999
(650) 887-
Los Altos
Pac - West Telecomm
11/20/1998
(650) 888-
San Mateo
Cingular Wireless
11/20/1998
(650) 889-
Half Moon Bay
O1 Comms
03/01/2001
(650) 892-
San Bruno
Cingular Wireless
03/03/2001
(650) 897-
Moss Beach
Pac - West Telecomm
10/13/1999
(650) 898-
Pacifica
Pac - West Telecomm
10/13/1999
(650) 899-
La Honda
Pac - West Telecomm
10/13/1999
(650) 900-
San Jose
O1 Comms
05/10/1999
(650) 903-
Mountain View
Pacific Bell
07/06/1997
(650) 906-
Palo Alto
Sprint
01/25/1998
(650) 917-
Los Altos
Pacific Bell
07/06/1997
(650) 918-
San Mateo
AT&T Local
08/14/1998
(650) 919-
Mountain View
Pacific Bell
07/06/1997
(650) 921-
San Mateo
Metro PCS
09/21/2001
(650) 922-
San Bruno
Verizon Wireless
03/01/2001
(650) 924-
Palo Alto
Sprint
10/31/2000
(650) 926-
Palo Alto
Pacific Bell
07/06/1997
(650) 930-
Sunnyvale
Brooks Fiber Comms
07/06/1997
(650) 931-
San Mateo
U.s. Telepacific Corp.
05/10/1999
(650) 932-
Mountain View
Pacific Bell
07/06/1997
(650) 933-
Mountain View
Pacific Bell
07/06/1997
(650) 934-
Mountain View
Pacific Bell
07/06/1997
(650) 935-
Los Altos
MCI Metro ATS
07/06/1997
(650) 937-
Mountain View
Pacific Bell
07/06/1997
(650) 938-
Mountain View
Pacific Bell
07/06/1997
(650) 940-
Mountain View
Pacific Bell
07/06/1997
(650) 941-
Los Altos
Pacific Bell
07/06/1997
(650) 942-
Millbrae
Verizon Wireless
08/14/1998
(650) 943-
Mountain View
Pacific Bell
07/06/1997
(650) 944-
Mountain View
Pacific Bell
07/06/1997
(650) 946-
Los Altos
Comcast Phone
07/06/1997
(650) 947-
Los Altos
Pacific Bell
07/06/1997
(650) 948-
Los Altos
Pacific Bell
07/06/1997
(650) 949-
Los Altos
Pacific Bell
07/06/1997
(650) 952-
San Bruno
Pacific Bell
07/06/1997
(650) 954-
Brisbane
Sprint
10/31/2000
(650) 960-
Mountain View
Pacific Bell
07/06/1997
(650) 961-
Mountain View
Pacific Bell
07/06/1997
(650) 962-
Mountain View
Pacific Bell
07/06/1997
(650) 963-
Mountain View
Pac - West Telecomm
05/18/1998
(650) 964-
Mountain View
Pacific Bell
07/06/1997
(650) 965-
Mountain View
Pacific Bell
07/06/1997
(650) 966-
Mountain View
Pacific Bell
07/06/1997
(650) 967-
Mountain View
Pacific Bell
07/06/1997
(650) 968-
Mountain View
Pacific Bell
07/06/1997
(650) 969-
Mountain View
Pacific Bell
07/06/1997
(650) 980-
Redwood City
Xo California
08/14/1998
(650) 984-
Pacifica
O1 Comms
06/25/2001
(650) 985-
Colma
Pacific Bell
07/06/1997
(650) 988-
Mountain View
Pacific Bell
07/06/1997
(650) 989-
Half Moon Bay
Broadwing Comms
06/30/2001
(650) 991-
Colma
Pacific Bell
07/06/1997
(650) 992-
Colma
Pacific Bell
07/06/1997
(650) 993-
Pacifica
Pacific Bell
07/06/1997
(650) 994-
Colma
Pacific Bell
07/06/1997
(650) 995-
Redwood City
Pacific Bell
01/25/2001
(650) 996-
Mountain View
Cingular Wireless
01/14/2000
(650) 997-
Colma
Pacific Bell
07/06/1997
(650) 999-
Palo Alto
Cf Comms DBA Telekenex
08/23/2011
Heavily Reported Numbers
Phone complaint data powered by CallerCenter.com
Sources: North American Numbering Plan Administration (NANPA), telecom providers, and the U.S. Census Bureau.
