Area code overview

Area code 510: location, prefixes and phone number lookup

Area code 510 is associated with CA. This page helps users understand the broader numbering region behind the area code and provides direct access to its visible prefixes, related rate centers and deeper phone lookup paths.

In the United States, an area code is the broad regional layer of the public numbering system. It does not identify one exact person or one exact caller, but it does help explain the larger numbering geography connected to a phone number.

If you are trying to understand calls from area code 510, identify a suspicious number, or browse the structure behind this numbering region, the next useful step is usually to open one of the prefixes or rate centers shown below.

AREA CODE

510

LOCATION

STATE / REGION

How area code 510 is used

Area code 510 is part of the public US numbering structure and works as a broad regional entry point. Inside it, multiple prefixes can exist, and those prefixes may connect to different local numbering hubs.

That is why area code pages are helpful: they give users a wider view first, then make it easier to narrow the search into local prefixes, rate centers and phone-specific pages.

For many searches, that is exactly the right workflow: start broad with the area code, then move to the smaller numbering layers that sit underneath it.

What users usually want to know

Users often arrive here because they want to know where area code 510 is used, whether a suspicious call may be connected to this numbering region, or how to move from the area code into more specific number ranges.

This page is designed to answer those questions quickly by showing the prefixes and local rate centers linked to the area code.

If you already know the full number, the best final destination is usually the direct phone page. If not, the lists below are the best next step.

Prefixes in area code 510

800 prefixes

These prefixes sit inside area code 510 and provide the next level of detail for users who want to narrow the numbering structure further.

Prefix

510-200 510-201 510-202 510-203 510-204 510-205 510-206 510-207 510-208 510-209 510-210 510-211 510-212 510-213 510-214 510-215 510-216 510-217 510-218 510-219 510-220 510-221 510-222 510-223 510-224 510-225 510-226 510-227 510-228 510-229 510-230 510-231 510-232 510-233 510-234 510-235 510-236 510-237 510-238 510-239 510-240 510-241 510-242 510-243 510-244 510-245 510-246 510-247 510-248 510-249 510-250 510-251 510-252 510-253 510-254 510-255 510-256 510-257 510-258 510-259 510-260 510-261 510-262 510-263 510-264 510-265 510-266 510-267 510-268 510-269 510-270 510-271 510-272 510-273 510-274 510-275 510-276 510-277 510-278 510-279 510-280 510-281 510-282 510-283 510-284 510-285 510-286 510-287 510-288 510-289 510-290 510-291 510-292 510-293 510-294 510-295 510-296 510-297 510-298 510-299 510-300 510-301 510-302 510-303 510-304 510-305 510-306 510-307 510-308 510-309 510-310 510-311 510-312 510-313 510-314 510-315 510-316 510-317 510-318 510-319 510-320 510-321 510-322 510-323 510-324 510-325 510-326 510-327 510-328 510-329 510-330 510-331 510-332 510-333 510-334 510-335 510-336 510-337 510-338 510-339 510-340 510-341 510-342 510-343 510-344 510-345 510-346 510-347 510-348 510-349 510-350 510-351 510-352 510-353 510-354 510-355 510-356 510-357 510-358 510-359 510-360 510-361 510-362 510-363 510-364 510-365 510-366 510-367 510-368 510-369 510-370 510-371 510-372 510-373 510-374 510-375 510-376 510-377 510-378 510-379 510-380 510-381 510-382 510-383 510-384 510-385 510-386 510-387 510-388 510-389 510-390 510-391 510-392 510-393 510-394 510-395 510-396 510-397 510-398 510-399 510-400 510-401 510-402 510-403 510-404 510-405 510-406 510-407 510-408 510-409 510-410 510-411 510-412 510-413 510-414 510-415 510-416 510-417 510-418 510-419 510-420 510-421 510-422 510-423 510-424 510-425 510-426 510-427 510-428 510-429 510-430 510-431 510-432 510-433 510-434 510-435 510-436 510-437 510-438 510-439 510-440 510-441 510-442 510-443 510-444 510-445 510-446 510-447 510-448 510-449 510-450 510-451 510-452 510-453 510-454 510-455 510-456 510-457 510-458 510-459 510-460 510-461 510-462 510-463 510-464 510-465 510-466 510-467 510-468 510-469 510-470 510-471 510-472 510-473 510-474 510-475 510-476 510-477 510-478 510-479 510-480 510-481 510-482 510-483 510-484 510-485 510-486 510-487 510-488 510-489 510-490 510-491 510-492 510-493 510-494 510-495 510-496 510-497 510-498 510-499

Rate centers

15 rate centers

These local numbering hubs are linked to area code 510 and help users move from a broad regional layer into more specific local structure.

Rate center

OKLD MN-PD HAYWARD FRNK MAIN OKLD BKLY OKLD TRNID RICHMOND FRNK OLIVR OKLD ALMD OKLD FRTVL ELSBR-PINL FRNK GRNLF HRCUL-RODE XXXXXXXXXX CROCKETT DIR ASST