MCIMETRO ACCESS TRANSMISSION SERVICES LLC

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

Prefixes held by MCIMETRO ACCESS TRANSMISSION SERVICES LLC in area code 510
NPA-NXX	Rate center	OCN	Assigned	Pooled
510-225	OKLD BKLY	7229	—	Yes
510-270	FRNK OLIVR	7229	—	Yes
510-280	OKLD BKLY	7229	—	Yes
510-283	ELSBR-PINL	7229	—	Yes
510-322	HRCUL-RODE	7229	—	Yes
510-323	RICHMOND	7229	—	Yes
510-400	FRNK GRNLF	7229	—	Yes
510-473	OKLD ALMD	7229	—	Yes
510-474	FRNK GRNLF	7229	—	Yes
510-478	RICHMOND	7229	—	Yes
510-488	OKLD FRTVL	7229	—	Yes
510-493	FRNK MAIN	7229	—	Yes
510-497	FRNK OLIVR	7229	—	Yes
510-500	OKLD FRTVL	7229	—	Yes
510-542	OKLD BKLY	7229	—	Yes
510-545	OKLD ALMD	7229	—	Yes
510-564	OKLD TRNID	7229	—	Yes
510-576	HAYWARD	7229	—	Yes
510-578	FRNK MAIN	7229	—	Yes
510-580	FRNK OLIVR	7229	—	—
510-584	HAYWARD	7229	—	Yes
510-621	RICHMOND	7229	—	Yes
510-662	ELSBR-PINL	7229	—	Yes
510-740	OKLD MN-PD	7229	—	Yes
510-743	FRNK OLIVR	7229	—	Yes
510-768	OKLD MN-PD	7229	—	Yes
510-788	OKLD MN-PD	7229	—	Yes
510-803	HRCUL-RODE	7229	—	Yes
510-824	FRNK OLIVR	7229	—	Yes
510-842	OKLD FRTVL	7229	—	Yes
510-844	OKLD MN-PD	7229	—	Yes
510-856	HAYWARD	7229	—	Yes
510-857	FRNK MAIN	7229	—	Yes
510-863	OKLD ALMD	7229	—	Yes
510-875	OKLD TRNID	7229	—	Yes
510-948	HRCUL-RODE	7229	2004-08-18	Yes
510-957	OKLD TRNID	7229	—	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.