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
510-900 OKLD BKLY 649C — Yes
510-901 HAYWARD 981E 2016-07-29 Yes
510-902 FRNK MAIN 649C 2018-12-03 Yes
510-903 OKLD MN-PD 8826 — Yes
510-904 OKLD TRNID 8826 2001-04-20 Yes
510-905 OKLD ALMD 5562 2018-09-17 Yes
510-906 OKLD ALMD 649C 2016-07-15 Yes
510-907 OKLD MN-PD 6006 — Yes
510-908 OKLD MN-PD 6006 — Yes
510-909 HAYWARD 6006 — —
510-910 OKLD MN-PD 6006 — —
510-911 XXXXXXXXXX MULT — —
510-912 OKLD MN-PD 6006 — —
510-913 OKLD MN-PD 6006 — Yes
510-914 OKLD MN-PD 6006 — —
510-915 OKLD MN-PD 6006 — —
510-916 OKLD TRNID 6529 2021-03-04 Yes
510-917 OKLD MN-PD 6006 — —
510-918 OKLD MN-PD 6010 — —
510-919 OKLD MN-PD 6006 — —
510-920 OKLD MN-PD 433E 2018-03-16 Yes
510-921 HAYWARD 7145 — Yes
510-922 OKLD MN-PD 9740 — Yes
510-923 OKLD MN-PD 9740 — —
510-924 OKLD TRNID 8826 — Yes
510-925 HAYWARD 981E 2014-09-18 Yes
510-926 OKLD BKLY 6006 — Yes
510-927 OKLD FRTVL 8826 — Yes
510-928 OKLD MN-PD 6010 — —
510-929 OKLD MN-PD 981E 2018-03-13 Yes
510-930 OKLD FRTVL 373F 2018-09-20 Yes
510-931 HAYWARD 8826 — Yes
510-932 RICHMOND 6529 2001-03-22 Yes
510-933 FRNK OLIVR 671J 2001-03-01 —
510-934 OKLD FRTVL 6529 2015-03-11 Yes
510-935 HAYWARD 6010 2014-03-27 Yes
510-936 FRNK MAIN 9740 — Yes
510-937 CROCKETT 981E 2015-06-09 Yes
510-938 FRNK MAIN 5562 2001-09-21 —
510-939 HRCUL-RODE 981E 2015-03-25 Yes
510-940 HAYWARD 671J — Yes
510-941 FRNK GRNLF 394L 2016-12-12 Yes
510-942 RICHMOND 7145 2014-12-01 Yes
510-943 FRNK MAIN 7718 — Yes
510-944 OKLD BKLY 6529 2014-10-03 Yes
510-945 FRNK GRNLF 6010 2015-04-10 Yes
510-946 FRNK OLIVR 6010 2015-06-11 Yes
510-947 OKLD MN-PD 649C — Yes
510-948 HRCUL-RODE 7229 2004-08-18 Yes
510-949 HRCUL-RODE 649C 2016-07-15 Yes
510-950 — —
510-951 HAYWARD 6006 2021-08-05 Yes
510-952 FRNK GRNLF 5562 2001-05-17 Yes
510-953 FRNK MAIN 6010 — Yes
510-954 HAYWARD 649C 2018-12-03 Yes
510-955 OKLD TRNID 7240 2018-04-05 Yes
510-956 OKLD ALMD 981E 2019-01-17 Yes
510-957 OKLD TRNID 7229 — Yes
510-958 — —
510-959 — —
510-960 OKLD BKLY 7421 — Yes
510-961 FRNK GRNLF 981E 2019-04-17 Yes
510-962 HAYWARD 8826 — Yes
510-963 HAYWARD 6010 2015-11-13 Yes
510-964 ELSBR-PINL 9740 — Yes
510-965 RICHMOND 9740 — Yes
510-966 RICHMOND 624H 2024-07-23 Yes
510-967 OKLD FRTVL 5562 — Yes
510-968 FRNK MAIN 9748 — —
510-969 OKLD TRNID 7718 — Yes
510-970 RICHMOND 9740 — —
510-971 OKLD MN-PD 7145 2020-12-22 Yes
510-972 FRNK GRNLF 394L — Yes
510-973 OKLD BKLY 6529 2021-02-25 Yes
510-974 RICHMOND 8826 2014-09-19 Yes
510-975 OKLD ALMD 6006 2019-01-22 Yes
510-976 OKLD BKLY 7894 2011-06-08 —
510-977 OKLD BKLY 965H 2019-03-19 Yes
510-978 OKLD ALMD 8826 — Yes
510-979 FRNK OLIVR 9740 — Yes
510-980 FRNK MAIN 6006 2019-06-10 Yes
510-981 OKLD BKLY 9740 — Yes
510-982 OKLD BKLY 7240 — Yes
510-983 FRNK OLIVR 981E 2019-02-06 Yes
510-984 OKLD BKLY 8826 — Yes
510-985 OKLD MN-PD 9740 — Yes
510-986 OKLD MN-PD 9740 — Yes
510-987 OKLD MN-PD 9740 — Yes
510-988 OKLD FRTVL 6529 2019-03-21 Yes
510-989 OKLD BKLY 707H — Yes
510-990 OKLD BKLY 649C — Yes
510-991 FRNK GRNLF 649C — Yes
510-992 OKLD MN-PD 981E — Yes
510-993 OKLD BKLY 6529 2016-06-10 Yes
510-994 RICHMOND 981E 2019-07-26 Yes
510-995 OKLD ALMD 671J — Yes
510-996 FRNK MAIN 8826 — Yes
510-997 OKLD MN-PD 6906 — —
510-998 ELSBR-PINL 6010 2019-03-27 Yes
510-999 HAYWARD 649C — 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.