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 |
|---|---|---|---|---|---|
| 2024-04-24 | 865-303 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | OAK RIDGE | TN |
| 2024-04-24 | 865-434 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | OAK RIDGE | TN |
| 2023-02-22 | 615-954 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2017-08-23 | 423-417 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | CHATTNOOGA | TN |
| 2017-02-06 | 931-283 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | WINCHESTER | TN |
| 2016-05-17 | 629-303 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2015-07-21 | 629-202 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2014-07-10 | 615-928 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2013-09-12 | 615-905 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | FRANKLIN | TN |
| 2013-08-29 | 615-381 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2012-04-03 | 615-988 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2011-11-28 | 423-301 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | SO PITTSBG | TN |
| 2011-10-19 | 615-209 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2011-02-18 | 615-798 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | FRANKLIN | TN |
| 2009-11-12 | 615-679 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2007-05-07 | 615-932 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2007-02-14 | 865-248 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | KINGSTON | TN |
| 2006-04-12 | 615-807 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | FRANKLIN | TN |
| 2004-05-04 | 931-443 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | CLARKSVL | TN |
| 2003-12-16 | 423-202 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | JOHNSON CY | TN |
| 2003-07-09 | 423-535 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | CHATTNOOGA | TN |
| 2002-03-01 | 615-658 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 615-216 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | MURFREESBO | TN | |
| 615-238 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-250 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-261 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | FRANKLIN | TN | |
| 615-296 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-301 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-312 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-345 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-346 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-369 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-467 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-468 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | FRANKLIN | TN | |
| 615-469 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-472 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | FRANKLIN | TN | |
| 615-523 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-526 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | OLDHICKORY | TN | |
| 615-528 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | GOODLETSVL | TN | |
| 615-534 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | SMYRNA | TN | |
| 615-537 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | HENDERSNVL | TN | |
| 615-634 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-777 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-843 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-844 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-846 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-850 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 615-858 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN | |
| 865-291 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | KNOXVILLE | TN | |
| 865-292 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7278 | KNOXVILLE | TN |
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.