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
510-700 — —
510-701 OKLD MN-PD 6010 — —
510-702 OKLD MN-PD 6630 — —
510-703 OKLD MN-PD 6010 — —
510-704 OKLD BKLY 9740 — Yes
510-705 OKLD BKLY 9740 — Yes
510-706 HAYWARD 5562 2001-08-22 —
510-707 OKLD TRNID 6529 2016-04-01 Yes
510-708 OKLD MN-PD 6010 — —
510-709 FRNK MAIN 515J — Yes
510-710 OKLD MN-PD 6010 — —
510-711 XXXXXXXXXX MULT — —
510-712 OKLD MN-PD 6010 — Yes
510-713 FRNK MAIN 9740 — —
510-714 FRNK MAIN 6529 — Yes
510-715 OKLD MN-PD 5562 — Yes
510-716 OKLD MN-PD 6630 — —
510-717 OKLD BKLY 6529 2002-09-19 Yes
510-718 OKLD MN-PD 9748 — —
510-719 OKLD MN-PD 5562 — Yes
510-720 OKLD MN-PD 6630 — —
510-721 OKLD MN-PD 649C 2021-11-18 Yes
510-722 CROCKETT 981E — Yes
510-723 HAYWARD 9740 — Yes
510-724 ELSBR-PINL 9740 — —
510-725 OKLD BKLY 7718 — Yes
510-726 CROCKETT 373F 2016-08-25 Yes
510-727 HAYWARD 9740 — Yes
510-728 HAYWARD 9740 — —
510-729 OKLD TRNID 9740 — Yes
510-730 RICHMOND 981E 2010-02-22 Yes
510-731 HAYWARD 7240 — Yes
510-732 HAYWARD 9740 — Yes
510-733 HAYWARD 9740 — —
510-734 RICHMOND 6010 — —
510-735 OKLD MN-PD 9740 — Yes
510-736 HAYWARD 6529 2013-12-09 Yes
510-737 FRNK MAIN 6010 2015-11-13 Yes
510-738 FRNK OLIVR 373F 2016-08-26 Yes
510-739 FRNK MAIN 9740 — Yes
510-740 OKLD MN-PD 7229 — Yes
510-741 ELSBR-PINL 9740 — —
510-742 FRNK MAIN 9740 — —
510-743 FRNK OLIVR 7229 — Yes
510-744 FRNK MAIN 9740 — Yes
510-745 FRNK MAIN 9740 — Yes
510-746 OKLD TRNID 671J 2001-04-23 Yes
510-747 OKLD ALMD 9740 — Yes
510-748 OKLD ALMD 9740 — —
510-749 OKLD ALMD 9740 — —
510-750 HAYWARD 5562 — Yes
510-751 HAYWARD 649C — Yes
510-752 OKLD MN-PD 9740 — —
510-753 OKLD TRNID 6529 2014-11-25 Yes
510-754 HAYWARD 5562 2002-05-17 Yes
510-755 HAYWARD 5562 — Yes
510-756 OKLD TRNID 6529 2015-09-09 Yes
510-757 OKLD MN-PD 5562 — Yes
510-758 ELSBR-PINL 9740 — —
510-759 OKLD MN-PD 6010 — Yes
510-760 HAYWARD 5562 — Yes
510-761 OKLD MN-PD 6010 — Yes
510-762 OKLD MN-PD 9740 — —
510-763 OKLD MN-PD 9740 — —
510-764 OKLD ALMD 8826 — Yes
510-765 ELSBR-PINL 9740 — —
510-766 FRNK MAIN 981E 2015-03-25 Yes
510-767 FRNK MAIN 6529 2019-11-08 Yes
510-768 OKLD MN-PD 7229 — Yes
510-769 OKLD ALMD 9740 — —
510-770 FRNK OLIVR 9740 — Yes
510-771 FRNK OLIVR 7240 — Yes
510-772 OKLD MN-PD 5562 — Yes
510-773 OKLD MN-PD 6529 — Yes
510-774 OKLD MN-PD 6529 — Yes
510-775 OKLD ALMD 981E 2012-09-14 Yes
510-776 RICHMOND 5562 2001-09-21 —
510-777 OKLD TRNID 9740 — Yes
510-778 RICHMOND 394L 2006-09-21 Yes
510-779 ELSBR-PINL 8826 — Yes
510-780 HAYWARD 9740 — Yes
510-781 HAYWARD 9740 — Yes
510-782 HAYWARD 9740 — —
510-783 HAYWARD 9740 — —
510-784 HAYWARD 9740 — —
510-785 HAYWARD 9740 — —
510-786 HAYWARD 9740 — Yes
510-787 CROCKETT 9740 — Yes
510-788 OKLD MN-PD 7229 — Yes
510-789 FRNK MAIN 7240 — Yes
510-790 FRNK MAIN 9740 — —
510-791 FRNK MAIN 9740 — —
510-792 FRNK MAIN 9740 — —
510-793 FRNK MAIN 9740 — —
510-794 FRNK MAIN 9740 — —
510-795 FRNK MAIN 9740 — —
510-796 FRNK MAIN 9740 — —
510-797 FRNK MAIN 9740 — —
510-798 OKLD TRNID 5562 — Yes
510-799 HRCUL-RODE 9740 — —

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.