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 |
|---|---|---|---|---|---|
| 573-596 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | FTLENARDWD | MO | |
| 580-300 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | MARIETTA | OK | |
| 580-382 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | PONCA CITY | OK | |
| 585-797 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROCHESTER | NY | |
| 585-957 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY | |
| 586-258 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WARREN | MI | |
| 586-261 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | CENTERLINE | MI | |
| 586-262 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | UTICA | MI | |
| 586-279 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROSEVILLE | MI | |
| 586-283 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WARREN | MI | |
| 586-314 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | UTICA | MI | |
| 586-439 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROSEVILLE | MI | |
| 586-461 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MT CLEMENS | MI | |
| 586-467 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | CENTERLINE | MI | |
| 586-569 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MT CLEMENS | MI | |
| 586-601 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROSEVILLE | MI | |
| 586-627 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MT CLEMENS | MI | |
| 586-722 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WARREN | MI | |
| 586-782 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | CENTERLINE | MI | |
| 586-802 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | UTICA | MI | |
| 586-816 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WASHINGTON | MI | |
| 586-819 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WARREN | MI | |
| 586-880 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | CENTERLINE | MI | |
| 586-888 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROSEVILLE | MI | |
| 586-913 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MT CLEMENS | MI | |
| 586-930 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | UTICA | MI | |
| 601-339 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS | 4886 | CLINTON | MS | |
| 601-718 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS | 4886 | JACKSON | MS | |
| 601-863 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | JACKSON | MS | |
| 602-281 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-282 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-324 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-358 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-384 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-393 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-427 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-445 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-459 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-466 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-476 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-567 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-586 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-687 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-718 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-734 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 602-773 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ | |
| 603-270 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | SUNCOOK | NH | |
| 603-273 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | LACONIA | NH | |
| 603-274 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | SO HAMPTON | NH | |
| 603-282 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | CANAAN | NH |
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.