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 |
|---|---|---|---|---|---|
| 2022-02-23 | 864-665 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | SIMPSONVL | SC |
| 2020-02-26 | 864-566 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | GREENVILLE | SC |
| 2018-10-22 | 864-537 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | GREENVILLE | SC |
| 2016-03-18 | 864-448 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | GREENVILLE | SC |
| 2015-03-16 | 864-714 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | FOUNTANINN | SC |
| 2012-04-10 | 864-315 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | GREENVILLE | SC |
| 2011-07-29 | 803-299 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2009-10-29 | 803-560 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | LK WYLIE W | SC |
| 2006-10-30 | 803-451 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2004-08-30 | 843-401 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | KINGSTREE | SC |
| 2003-09-26 | 843-733 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | CONWAY | SC |
| 2003-08-18 | 843-773 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | FLORENCE | SC |
| 2003-08-06 | 843-303 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | CHARLESTON | SC |
| 2003-08-06 | 864-607 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | GREENVILLE | SC |
| 2003-07-03 | 803-873 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2002-05-06 | 803-692 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | BISHOPVL | SC |
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.