NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2001-05-10 | 323-513 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 06 | CA |
| 2001-05-10 | 323-524 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 08 | CA |
| 2001-05-10 | 323-527 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 09 | CA |
| 2001-05-10 | 323-529 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 11 | CA |
| 2001-05-10 | 323-601 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 12 | CA |
| 2001-05-10 | 323-602 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 13 | CA |
| 2001-05-10 | 323-603 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 14 | CA |
| 2001-05-10 | 323-641 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 11 | CA |
| 2001-05-10 | 323-642 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 12 | CA |
| 2001-05-10 | 323-801 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 13 | CA |
| 2001-05-10 | 323-802 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 14 | CA |
| 2001-05-10 | 323-803 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MONTEBELLO | CA |
| 2001-05-10 | 714-696 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | YORBALINDA | CA |
| 2001-05-10 | 714-783 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANAHEIM | CA |
| 2001-05-10 | 714-820 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CYPRESS | CA |
| 2001-05-10 | 714-868 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BUENA PARK | CA |
| 2001-05-10 | 714-872 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FULLERTON | CA |
| 2001-05-10 | 714-941 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ORANGE | CA |
| 2001-05-10 | 714-982 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PLACENTIA | CA |
| 2001-05-10 | 714-987 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BREA | CA |
| 2001-04-23 | 760-692 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD CRLS | CA |
| 2001-04-17 | 831-319 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WATSONVL | CA |
| 2001-01-25 | 619-649 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NATIONALCY | CA |
| 209-221 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | TRACY | CA | |
| 209-235 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | STOCKTON | CA | |
| 209-242 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | STOCKTON | CA | |
| 209-332 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | IONE | CA | |
| 209-371 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | LODI | CA | |
| 213-271 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 01 | CA | |
| 310-254 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | W ANGELES | CA | |
| 310-507 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN PEDRO | CA | |
| 310-526 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNMN SNMN | CA | |
| 310-579 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MALIBU | CA | |
| 310-728 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BEVERLYHLS | CA | |
| 310-734 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BEVERLYHLS | CA | |
| 310-735 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CMTN CMTN | CA | |
| 310-736 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CULVERCITY | CA | |
| 310-750 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | REDONDO | CA | |
| 310-751 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNMN MRVS | CA | |
| 310-752 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNMN SNMN | CA | |
| 310-765 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL SEGUNDO | CA | |
| 310-800 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CMTN GRDN | CA | |
| 310-819 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CMTN GRDN | CA | |
| 310-844 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HAWTHORNE | CA | |
| 310-846 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | INGLEWOOD | CA | |
| 310-893 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | W ANGELES | CA | |
| 310-894 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CMTN CMTN | CA | |
| 310-895 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CULVERCITY | CA | |
| 310-953 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | TORRANCE | CA | |
| 310-954 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | W ANGELES | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.