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Area Code 510

Browse available prefixes, locations, carriers, and quick path links into deeper phone number pages for this area code. Area-code research is one of the most important parts of reverse phone lookup because it gives visitors a geographic starting point before they inspect a full number.

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200Prefixes Listed
CaliforniaLocation
United StatesCountry
510Area Code
Area Code Overview
Area Code510
Primary LocationCalifornia
CountryUnited States
Prefix Coverage200 listed prefixes
Prefixes in 510
510-200
Oakland
Metro Pcs Inc.
Landline
510-201
San Jose
Peerless Network Of California Llc - Ca
Landline
510-202
Hayward
American Messaging (am) Inc.
Landline
510-204
Berkeley
Pacific Bell
Landline
510-205
Oakland
Sprint Spectrum L.p.
Wireless
510-206
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-207
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-208
Oakland
Pacific Bell
Landline
510-209
Oakland
Sprint Spectrum L.p.
Wireless
510-210
San Francisco
Bandwidth.com Clec Llc - Ca
Landline
510-212
Livermore
Usa Mobility Wireless Inc.
Wireless
510-213
Oakland
T-mobile Usa Inc.
Wireless
510-214
Hayward
Mci Worldcom Communications Inc. Ca
Landline
510-215
Richmond
Pacific Bell
Landline
510-216
Livermore
Usa Mobility Wireless Inc.
Wireless
510-217
San Francisco
Teleport Communications Group - San Francisco
Landline
510-218
Livermore
Usa Mobility Wireless Inc.
Wireless
510-219
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-220
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-221
Oakland
Sprint Spectrum L.p.
Wireless
510-222
El Sobrante
Pacific Bell
Landline
510-223
El Sobrante
Pacific Bell
Landline
510-224
Dublin
Sprint Spectrum L.p.
Wireless
510-225
San Francisco
Allegiance Telecom Inc. - Ca
Landline
510-226
Fremont
Pacific Bell
Landline
510-227
Pleasanton
Tw Telecom Of California Lp - Ca
Landline
510-228
Oakland
Pac - West Telecomm Inc.
Landline
510-229
Oakland
Pacific Bell
Landline
510-230
Oakland
T-mobile Usa Inc.
Wireless
510-231
Richmond
Pacific Bell
Landline
510-232
Richmond
Pacific Bell
Landline
510-233
Richmond
Pacific Bell
Landline
510-234
Richmond
Pacific Bell
Landline
510-235
Richmond
Pacific Bell
Landline
510-236
Richmond
Pacific Bell
Landline
510-237
Richmond
Pacific Bell
Landline
510-238
Oakland
Pacific Bell
Landline
510-239
San Jose
Mpower Communications Corp - Ca
Landline
510-240
Walnut Creek
Tw Telecom Of California Lp - Ca
Landline
510-242
Richmond
Pacific Bell
Landline
510-243
El Sobrante
Pacific Bell
Landline
510-244
San Francisco
Bandwidth.com Clec Llc - Ca
Landline
510-245
Hercules
Pacific Bell
Landline
510-246
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-247
Hayward
Pacific Bell
Landline
510-248
Fremont
Pac - West Telecomm Inc.
Landline
510-249
Fremont
Pacific Bell
Landline
510-250
San Francisco
Broadwing Communications Llc - Ca
Landline
510-251
Oakland
Pacific Bell
Landline
510-252
Fremont
Pacific Bell
Landline
510-253
Oakland
Tw Telecom Of California Lp - Ca
Landline
510-254
San Francisco
Level 3 Communications Llc - Ca
Landline
510-255
San Francisco
Bandwidth.com Clec Llc - Ca
Landline
510-256
San Francisco
O1 Communications Inc. - Ca
Landline
510-257
San Jose
Teleport Communications Group - San Francisco
Landline
510-258
Oakland
Pacific Bell
Landline
510-259
Hayward
Pacific Bell
Landline
510-260
San Francisco
Comcast Phone Of California Llc - Ca
Landline
510-261
Oakland
Pacific Bell
Landline
510-262
El Sobrante
Pacific Bell
Landline
510-263
Alameda
Pacific Bell
Landline
510-264
Hayward
Pacific Bell
Landline
510-265
Hayward
Pacific Bell
Landline
510-266
Hayward
Pacific Bell
Landline
510-267
Oakland
Pacific Bell
Landline
510-268
Oakland
Pacific Bell
Landline
510-269
Hayward
Mci Worldcom Communications Inc. Ca
Landline
510-270
San Francisco
Brooks Fiber Communications Of California - Ca
Landline
510-271
Oakland
Pacific Bell
Landline
510-272
Oakland
Pacific Bell
Landline
510-273
Oakland
Pacific Bell
Landline
510-274
San Francisco
Utility Telephone Inc. - Ca
Landline
510-275
Oakland
Pac - West Telecomm Inc.
Landline
510-276
San Leandro
Pacific Bell
Landline
510-277
Oakland
Global Crossing Local Services Inc.-ca
Landline
510-278
San Leandro
Pacific Bell
Landline
510-279
Oakland
Pac - West Telecomm Inc.
Landline
510-280
Fremont
Xo California Inc.
Landline
510-281
Oakland
Pac - West Telecomm Inc.
Landline
510-282
Oakland
T-mobile Usa Inc.
Wireless
510-283
Oakland
Allegiance Telecom Inc. - Ca
Landline
510-284
Fremont
Pacific Bell
Landline
510-285
Hayward
Mci Worldcom Communications Inc. Ca
Landline
510-286
Oakland
Pacific Bell
Landline
510-287
Oakland
Pacific Bell
Landline
510-288
Oakland
Pac - West Telecomm Inc.
Landline
510-289
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-290
Oakland
Sprint Spectrum L.p.
Wireless
510-291
Oakland
Pac - West Telecomm Inc.
Landline
510-292
Pleasanton
Pacific Bell
Landline
510-293
Hayward
Pacific Bell
Landline
510-294
San Leandro
Sprint Spectrum L.p.
Wireless
510-295
Oakland
Pac - West Telecomm Inc.
Landline
510-296
San Francisco
Level 3 Communications Llc - Ca
Landline
510-297
San Leandro
Pacific Bell
Landline
510-298
Concord
New Cingular Wireless Pcs Llc
Wireless
510-299
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-300
San Jose
U.s. Telepacific Corp. - Ca
Landline
510-301
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-302
Oakland
Pacific Bell
Landline
510-303
Santa Clara
New Cingular Wireless Pcs Llc
Wireless
510-304
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-305
Santa Clara
New Cingular Wireless Pcs Llc
Wireless
510-306
Oakland
Sprint Spectrum L.p.
Wireless
510-307
Richmond
Pacific Bell
Landline
510-308
Livermore
Usa Mobility Wireless Inc.
Wireless
510-310
Livermore
Usa Mobility Wireless Inc.
Wireless
510-312
Oakland
Cook Telecom Inc.
Landline
510-313
San Francisco
Teleport Communications Group - San Francisco
Landline
510-314
Oakland
Sprint Spectrum L.p.
Wireless
510-315
San Francisco
Broadwing Communications Llc - Ca
Landline
510-316
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-317
San Leandro
Pacific Bell
Landline
510-318
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-321
Livermore
Usa Mobility Wireless Inc.
Wireless
510-322
San Francisco
Mcimetro Access Transmission Services Llc
Landline
510-323
Fremont
Xo California Inc.
Landline
510-324
Union City
Pacific Bell
Landline
510-325
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-326
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-327
Oakland
Pac - West Telecomm Inc.
Landline
510-328
Oakland
Sprint Spectrum L.p.
Wireless
510-329
Santa Clara
New Cingular Wireless Pcs Llc
Wireless
510-331
Santa Clara
New Cingular Wireless Pcs Llc
Wireless
510-332
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-333
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-334
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-335
San Francisco
Cf Communications Llc Dba Telekenex - Ca
Landline
510-336
Oakland
Pacific Bell
Landline
510-337
Alameda
Pacific Bell
Landline
510-338
Oakland
Pacific Bell
Landline
510-339
Oakland
Pacific Bell
Landline
510-340
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-342
San Jose
Mpower Communications Corp - Ca
Landline
510-343
San Francisco
Mpower Communications Corp - Ca
Landline
510-344
Oakland
Global Crossing Local Services Inc.-ca
Landline
510-346
San Leandro
Pacific Bell
Landline
510-347
San Leandro
Pacific Bell
Landline
510-348
Oakland
33 Wireless Inc.
Wireless
510-349
Oakland
Cook Telecom Inc.
Landline
510-350
Oakland
Teleport Communications Group - San Francisco
Landline
510-351
San Leandro
Pacific Bell
Landline
510-352
San Leandro
Pacific Bell
Landline
510-353
Fremont
Pacific Bell
Landline
510-354
Fremont
Pacific Bell
Landline
510-355
Oakland
Global Crossing Local Services Inc.-ca
Landline
510-356
Berkeley
Pacific Bell
Landline
510-357
San Leandro
Pacific Bell
Landline
510-358
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-359
Oakland
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-360
Fremont
Pacific Bell
Landline
510-362
Oakland
T-mobile Usa Inc.
Wireless
510-363
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-364
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-366
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-367
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-368
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-370
San Jose
Peerless Network Of California Llc - Ca
Landline
510-371
San Francisco
Level 3 Communications Llc - Ca
Landline
510-372
Oakland
Pac - West Telecomm Inc.
Landline
510-373
Oakland
Pac - West Telecomm Inc.
Landline
510-374
Richmond
Pacific Bell
Landline
510-375
Oakland
T-mobile Usa Inc.
Wireless
510-376
Dublin
Sprint Spectrum L.p.
Wireless
510-377
Dublin
Sprint Spectrum L.p.
Wireless
510-378
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-379
San Francisco
Tw Telecom Of California Lp - Ca
Landline
510-380
Oakland
Pac - West Telecomm Inc.
Landline
510-381
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-382
Oakland
Pacific Bell
Landline
510-383
Oakland
Pacific Bell
Landline
510-384
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-385
Dublin
Sprint Spectrum L.p.
Wireless
510-386
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-387
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-388
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-389
Oakland
American Messaging (am) Inc.
Landline
510-390
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-391
Oakland
American Messaging (am) Inc.
Landline
510-392
Oakland
American Messaging (am) Inc.
Landline
510-393
Oakland
Sprint Spectrum L.p.
Wireless
510-394
San Francisco
Teleport Communications Group - San Francisco
Landline
510-395
Oakland
Teleport Communications Group - San Francisco
Landline
510-396
Oakland
T-mobile Usa Inc.
Wireless
510-397
Hayward
Comcast Phone Of California Llc - Ca
Landline
510-398
San Francisco
Bandwidth.com Clec Llc - Ca
Landline
510-400
Fremont
Xo California Inc.
Landline
510-401
San Jose
Mpower Communications Corp - Ca
Landline
510-402
San Francisco
Mpower Communications Corp - Ca
Landline
510-403
San Jose
Mpower Networks Services Inc. - Ca
Landline
510-404
Hayward
Mci Worldcom Communications Inc. Ca
Landline
510-405
Oakland
Pac - West Telecomm Inc.
Landline
510-406
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-407
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-408
Hercules
Pacific Bell
Landline
510-409
San Francisco
New Cingular Wireless Pcs Llc
Wireless
510-410
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless
510-412
Richmond
Pacific Bell
Landline
510-413
Fremont
Pacific Bell
Landline
510-414
Pleasanton
Cellco Partnership Dba Verizon Wireless - Ca
Wireless

Top prefixes in this area code

510-200→510-201→510-202→510-204→510-205→510-206→510-207→510-208→
Why area code pages matter in reverse phone lookup

Area code pages help visitors understand the wider calling region connected to a number. While a full reverse phone lookup page focuses on one specific caller, an area code page shows the bigger picture by grouping prefixes, cities, and carrier patterns under the same first three digits. This makes it easier to spot whether a number appears local, regional, or part of a service area the visitor already recognizes.

For phone directory websites, area code pages also improve browsing. A user can start with a missed call, discover the number's first three digits, and then move into the related area code to see supporting location data and a list of active prefixes. That layered navigation creates a better research experience and gives visitors more confidence when they continue into a specific number page.