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
510-800 OKLD ALMD 649C — Yes
510-801 OKLD MN-PD 6630 — —
510-802 OKLD MN-PD 6630 — —
510-803 HRCUL-RODE 7229 — Yes
510-804 ELSBR-PINL 6529 — Yes
510-805 OKLD MN-PD 6630 — —
510-806 RICHMOND 8826 2016-06-09 Yes
510-807 HAYWARD 6529 2019-05-28 Yes
510-808 OKLD MN-PD 9740 — Yes
510-809 OKLD BKLY 671J — Yes
510-810 OKLD ALMD 6529 2024-05-31 Yes
510-811 XXXXXXXXXX MULT — —
510-812 OKLD BKLY 5562 — Yes
510-813 OKLD MN-PD 6010 — —
510-814 OKLD ALMD 9740 — —
510-815 ELSBR-PINL 6529 — Yes
510-816 OKLD MN-PD 6010 — —
510-817 OKLD MN-PD 9740 — Yes
510-818 FRNK MAIN 9740 — —
510-819 HAYWARD 624H 2024-06-12 Yes
510-820 OKLD TRNID 6529 2015-07-10 Yes
510-821 OKLD MN-PD 6006 — Yes
510-822 OKLD TRNID 6529 2016-10-21 Yes
510-823 OKLD MN-PD 6529 — Yes
510-824 FRNK OLIVR 7229 — Yes
510-825 HAYWARD 5562 2001-10-18 Yes
510-826 HAYWARD 6010 2016-12-09 Yes
510-827 OKLD MN-PD 5562 — Yes
510-828 HAYWARD 6006 2001-03-22 Yes
510-829 RICHMOND 5562 2014-08-18 Yes
510-830 OKLD MN-PD 515J — Yes
510-831 RICHMOND 981E 2020-12-11 Yes
510-832 OKLD MN-PD 9740 — Yes
510-833 OKLD BKLY 394L 2014-07-28 Yes
510-834 OKLD MN-PD 9740 — —
510-835 OKLD MN-PD 9740 — —
510-836 OKLD MN-PD 9740 — Yes
510-837 RICHMOND 7145 — Yes
510-838 OKLD FRTVL 981E 2014-02-28 Yes
510-839 OKLD MN-PD 9740 — —
510-840 OKLD MN-PD 9262 — —
510-841 OKLD BKLY 9740 — —
510-842 OKLD FRTVL 7229 — Yes
510-843 OKLD BKLY 9740 — —
510-844 OKLD MN-PD 7229 — Yes
510-845 OKLD BKLY 9740 — —
510-846 OKLD ALMD 6006 — Yes
510-847 OKLD BKLY 6006 2001-03-22 —
510-848 OKLD BKLY 9740 — —
510-849 OKLD BKLY 9740 — Yes
510-850 OKLD TRNID 6529 2015-04-13 Yes
510-851 OKLD MN-PD 6006 — Yes
510-852 OKLD MN-PD 6006 — Yes
510-853 OKLD MN-PD 6006 — Yes
510-854 ELSBR-PINL 981E — Yes
510-855 OKLD MN-PD 9262 — Yes
510-856 HAYWARD 7229 — Yes
510-857 FRNK MAIN 7229 — Yes
510-858 OKLD MN-PD 5562 — Yes
510-859 OKLD BKLY 671J — Yes
510-860 RICHMOND 8826 — Yes
510-861 HAYWARD 6010 — Yes
510-862 HAYWARD 6010 — Yes
510-863 OKLD ALMD 7229 — Yes
510-864 OKLD ALMD 9740 — —
510-865 OKLD ALMD 9740 — —
510-866 OKLD FRTVL 5562 2001-01-25 Yes
510-867 OKLD MN-PD 6529 — Yes
510-868 OKLD BKLY 8826 — Yes
510-869 OKLD MN-PD 9740 — Yes
510-870 FRNK GRNLF 8826 — Yes
510-871 OKLD ALMD 6006 2014-07-28 Yes
510-872 OKLD ALMD 5562 — Yes
510-873 OKLD MN-PD 9740 — Yes
510-874 OKLD MN-PD 9740 — Yes
510-875 OKLD TRNID 7229 — Yes
510-876 HAYWARD 516C 2014-03-27 Yes
510-877 OKLD TRNID 7240 — Yes
510-878 OKLD TRNID 394L — Yes
510-879 OKLD MN-PD 7145 — Yes
510-880 HAYWARD 649C — Yes
510-881 HAYWARD 9740 — Yes
510-882 OKLD MN-PD 6006 — —
510-883 OKLD BKLY 9740 — Yes
510-884 HAYWARD 9262 — —
510-885 HAYWARD 9740 — —
510-886 HAYWARD 9740 — —
510-887 HAYWARD 9740 — —
510-888 HAYWARD 9740 — —
510-889 HAYWARD 9740 — Yes
510-890 RICHMOND 6529 2016-06-14 Yes
510-891 OKLD MN-PD 9740 — Yes
510-892 HAYWARD 649C — Yes
510-893 OKLD MN-PD 9740 — —
510-894 FRNK MAIN 394L — Yes
510-895 OKLD TRNID 9740 — —
510-896 FRNK MAIN 7145 — Yes
510-897 FRNK OLIVR 7145 — Yes
510-898 OKLD BKLY 7145 — Yes
510-899 OKLD MN-PD 981E — Yes

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.