NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
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 |
|---|---|---|---|---|---|
| 443-816 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SEVERNA PK | MD | |
| 443-817 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARGRGBSNIS | MD | |
| 443-891 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GLENBURNIE | MD | |
| 443-893 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOODLAWN | MD | |
| 443-973 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELLICOTTCY | MD | |
| 469-375 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 469-385 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 469-461 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 469-519 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALLEN | TX | |
| 469-521 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARROLLTON | TX | |
| 469-574 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARROLLTON | TX | |
| 469-893 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 480-212 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-223 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-237 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-281 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-282 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-296 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-459 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-477 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-505 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-518 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-552 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-554 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-567 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-586 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-603 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-612 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-715 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-718 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-723 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 480-734 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 484-204 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHESTERSPG | PA | |
| 484-307 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WESTTOWN | PA | |
| 484-320 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN28 | PA | |
| 484-351 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN31 | PA | |
| 484-367 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN26 | PA | |
| 484-375 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALLENTOWN | PA | |
| 484-397 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALLENTOWN | PA | |
| 484-422 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN22 | PA | |
| 484-450 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHPHSBZN21 | PA | |
| 484-518 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN29 | PA | |
| 484-524 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | POTTSTOWN | PA | |
| 484-528 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WESTTOWN | PA | |
| 484-540 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN14 | PA | |
| 484-551 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | LENAPE | PA | |
| 484-564 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | WESTTOWN | PA | |
| 484-612 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN30 | PA | |
| 484-621 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN12 | PA | |
| 484-625 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN13 | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.