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 |
|---|---|---|---|---|---|
| 619-828 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA MESA | CA | |
| 619-858 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA | |
| 619-872 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CHULAVISTA | CA | |
| 619-878 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONADO | CA | |
| 619-881 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA | |
| 619-916 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA MESA | CA | |
| 619-931 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | NATIONALCY | CA | |
| 619-937 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL CAJON | CA | |
| 619-946 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CHULAVISTA | CA | |
| 619-955 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA | |
| 626-250 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | AZUSA | CA | |
| 626-251 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | COVINA | CA | |
| 626-263 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MONROVIA | CA | |
| 626-264 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SIERRAMADR | CA | |
| 626-532 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL MONTE | CA | |
| 626-534 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | EL MONTE | CA | |
| 626-537 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ALHAMBRA | CA | |
| 626-538 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ARCADIA | CA | |
| 626-639 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PSDN PSDN | CA | |
| 626-660 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PSDN PSDN | CA | |
| 626-923 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA PUENTE | CA | |
| 650-226 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNCRL-BLMT | CA | |
| 650-238 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SSNFRNCSCO | CA | |
| 650-263 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MOSS BEACH | CA | |
| 650-429 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA | |
| 650-481 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | REDWOOD CY | CA | |
| 650-651 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MILLBRAE | CA | |
| 650-653 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MATEO | CA | |
| 650-687 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PALO ALTO | CA | |
| 650-719 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MOSS BEACH | CA | |
| 650-733 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PACIFICA | CA | |
| 650-850 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WOODSIDE | CA | |
| 661-219 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNCA NHCS | CA | |
| 661-281 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD MAIN | CA | |
| 661-282 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD SOUTH | CA | |
| 661-309 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNCA SGCC | CA | |
| 661-316 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | BKFD MAIN | CA | |
| 707-244 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ST HELENA | CA | |
| 707-430 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FRFLD-SUIS | CA | |
| 707-536 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ROSA | CA | |
| 707-561 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VALLEJO | CA | |
| 714-230 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WESTMINSTR | CA | |
| 714-481 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SANTA ANA | CA | |
| 714-591 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | GARDEN GRV | CA | |
| 714-660 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | YORBALINDA | CA | |
| 714-676 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BUENA PARK | CA | |
| 714-763 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CYPRESS | CA | |
| 714-782 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANAHEIM | CA | |
| 714-849 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | HUNTITNBCH | CA | |
| 714-869 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FULLERTON | 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.