NRNumberResearch Membership · Data 09/17/2026

← Area code 510

All assignees

800 prefixes in 510 · initial assignments from the NANPA CO code file, 09/17/2026

Prefixes held by all assignees in area code 510
NPA-NXXRate centerOCNAssignedPooled
510-400 FRNK GRNLF 7229 — Yes
510-401 FRNK GRNLF 671J — Yes
510-402 FRNK MAIN 981E — Yes
510-403 FRNK OLIVR 671J — Yes
510-404 FRNK GRNLF 7240 — Yes
510-405 FRNK MAIN 649C — —
510-406 OKLD MN-PD 6006 — Yes
510-407 OKLD MN-PD 6006 — —
510-408 ELSBR-PINL 9740 2009-11-25 Yes
510-409 OKLD MN-PD 6010 — —
510-410 OKLD MN-PD 6006 — —
510-411 XXXXXXXXXX MULT — —
510-412 RICHMOND 9740 — —
510-413 FRNK OLIVR 9740 — Yes
510-414 OKLD MN-PD 6006 — —
510-415 HAYWARD 6529 2001-09-19 —
510-416 OKLD BKLY 7894 — —
510-417 ELSBR-PINL 6529 2002-09-19 Yes
510-418 OKLD MN-PD 6006 — —
510-419 OKLD MN-PD 9740 — Yes
510-420 OKLD MN-PD 9740 — —
510-421 OKLD MN-PD 6006 — —
510-422 OKLD FRTVL 6529 2015-09-25 Yes
510-423 OKLD BKLY 829J 2008-11-07 Yes
510-424 OKLD FRTVL 6529 2016-07-29 Yes
510-425 OKLD TRNID 9740 — Yes
510-426 RICHMOND 6006 2014-03-27 Yes
510-427 HAYWARD 6006 — —
510-428 OKLD MN-PD 9740 — —
510-429 FRNK GRNLF 9740 — —
510-430 OKLD TRNID 9740 — —
510-431 FRNK GRNLF 8826 — Yes
510-432 HAYWARD 6010 2001-11-28 —
510-433 OKLD MN-PD 9740 — Yes
510-434 OKLD FRTVL 9740 — Yes
510-435 OKLD MN-PD 6529 — Yes
510-436 OKLD FRTVL 9740 — —
510-437 OKLD FRTVL 9740 — Yes
510-438 FRNK OLIVR 9740 — Yes
510-439 RICHMOND 649C — Yes
510-440 FRNK OLIVR 9740 — Yes
510-441 FRNK GRNLF 9740 — Yes
510-442 OKLD MN-PD 9262 — —
510-443 FRNK MAIN 373F 2009-02-14 Yes
510-444 OKLD MN-PD 9740 — Yes
510-445 FRNK OLIVR 9740 — Yes
510-446 OKLD MN-PD 9740 — Yes
510-447 RICHMOND 5562 2011-12-09 Yes
510-448 OKLD MN-PD 9262 — —
510-449 FRNK MAIN 7145 — Yes
510-450 OKLD MN-PD 9740 — —
510-451 OKLD MN-PD 9740 — —
510-452 OKLD MN-PD 9740 — Yes
510-453 FRNK MAIN 5562 — Yes
510-454 OKLD TRNID 9740 2012-11-30 Yes
510-455 CROCKETT 6529 2001-04-20 Yes
510-456 FRNK MAIN 671J — Yes
510-457 OKLD MN-PD 7145 — Yes
510-458 FRNK MAIN 6006 2014-10-14 Yes
510-459 OKLD MN-PD 6529 — Yes
510-460 HAYWARD 6006 2010-02-09 Yes
510-461 HAYWARD 6010 2002-08-21 Yes
510-462 FRNK GRNLF 649C 2016-05-04 Yes
510-463 OKLD MN-PD 671J — Yes
510-464 OKLD MN-PD 9740 — Yes
510-465 OKLD MN-PD 9740 — —
510-466 OKLD MN-PD 9740 — Yes
510-467 OKLD FRTVL 7718 — Yes
510-468 FRNK MAIN 6006 — —
510-469 OKLD MN-PD 5562 — Yes
510-470 HAYWARD 981E 2010-02-22 Yes
510-471 FRNK GRNLF 9740 — —
510-472 OKLD MN-PD 5562 2001-08-22 —
510-473 OKLD ALMD 7229 — Yes
510-474 FRNK GRNLF 7229 — Yes
510-475 FRNK GRNLF 9740 — —
510-476 FRNK GRNLF 9740 — Yes
510-477 FRNK GRNLF 9740 — —
510-478 RICHMOND 7229 — Yes
510-479 OKLD FRTVL 7145 — Yes
510-480 ELSBR-PINL 6529 2013-09-26 Yes
510-481 HAYWARD 9740 — —
510-482 OKLD FRTVL 9740 — —
510-483 OKLD TRNID 9740 — —
510-484 OKLD MN-PD 5562 — Yes
510-485 OKLD FRTVL 5562 — Yes
510-486 OKLD BKLY 9740 — —
510-487 FRNK GRNLF 9740 — —
510-488 OKLD FRTVL 7229 — Yes
510-489 FRNK GRNLF 9740 — —
510-490 FRNK OLIVR 9740 — —
510-491 FRNK GRNLF 7145 — Yes
510-492 FRNK OLIVR 9740 — Yes
510-493 FRNK MAIN 7229 — Yes
510-494 FRNK MAIN 9740 — —
510-495 OKLD BKLY 9740 — Yes
510-496 OKLD MN-PD 671J — Yes
510-497 FRNK OLIVR 7229 — Yes
510-498 FRNK OLIVR 9740 — Yes
510-499 OKLD MN-PD 6010 — —

These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.