NRNumberResearch Membership · Data 09/17/2026

← Area code 510

LEVEL 3 COMMUNICATIONS, LLC - CA

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

Prefixes held by LEVEL 3 COMMUNICATIONS, LLC - CA in area code 510
NPA-NXXRate centerOCNAssignedPooled
510-228 OKLD FRTVL 8826 — Yes
510-248 FRNK MAIN 8826 — Yes
510-250 OKLD MN-PD 8826 — Yes
510-254 OKLD ALMD 8826 2011-09-15 Yes
510-277 OKLD BKLY 8826 — Yes
510-279 FRNK OLIVR 8826 — Yes
510-296 HRCUL-RODE 8826 — Yes
510-315 HAYWARD 8826 — —
510-344 FRNK OLIVR 8826 — Yes
510-355 OKLD ALMD 8826 — Yes
510-371 FRNK MAIN 8826 2008-08-07 Yes
510-431 FRNK GRNLF 8826 — Yes
510-509 FRNK MAIN 8826 2010-07-06 Yes
510-550 OKLD MN-PD 8826 — Yes
510-556 FRNK MAIN 8826 2014-05-05 Yes
510-592 HRCUL-RODE 8826 — Yes
510-619 RICHMOND 8826 — Yes
510-629 OKLD ALMD 8826 — Yes
510-764 OKLD ALMD 8826 — Yes
510-779 ELSBR-PINL 8826 — Yes
510-806 RICHMOND 8826 2016-06-09 Yes
510-860 RICHMOND 8826 — Yes
510-868 OKLD BKLY 8826 — Yes
510-870 FRNK GRNLF 8826 — Yes
510-903 OKLD MN-PD 8826 — Yes
510-904 OKLD TRNID 8826 2001-04-20 Yes
510-924 OKLD TRNID 8826 — Yes
510-927 OKLD FRTVL 8826 — Yes
510-931 HAYWARD 8826 — Yes
510-962 HAYWARD 8826 — Yes
510-974 RICHMOND 8826 2014-09-19 Yes
510-978 OKLD ALMD 8826 — Yes
510-984 OKLD BKLY 8826 — Yes
510-996 FRNK MAIN 8826 — 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.