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 |
|---|---|---|---|---|---|
| 2006-11-30 | 424-204 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEVERLYHLS | CA |
| 2006-11-30 | 424-205 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CMTN GRDN | CA |
| 2006-11-30 | 561-200 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | BOYNTONBCH | FL |
| 2006-11-30 | 714-316 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HUNTITNBCH | CA |
| 2006-11-22 | 801-610 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | AMERCNFORK | UT |
| 2006-11-21 | 678-922 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | VILLA RICA | GA |
| 2006-11-21 | 845-205 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NORTHSALEM | NY |
| 2006-10-30 | 803-451 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2006-10-25 | 334-575 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ABBEVILLE | AL |
| 2006-10-25 | 334-662 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FORESTHOME | AL |
| 2006-10-25 | 334-723 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HARTFORD | AL |
| 2006-10-25 | 334-991 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TALLASSEE | AL |
| 2006-10-25 | 334-997 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAMSON | AL |
| 2006-10-16 | 850-409 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CRESTVIEW | FL |
| 2006-09-26 | 224-656 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WAUKEGAN | IL |
| 2006-09-25 | 619-862 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CHULAVISTA | CA |
| 2006-09-25 | 678-664 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARROLLTON | GA |
| 2006-09-25 | 704-360 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | MOORESVL | NC |
| 2006-08-25 | 661-480 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLDL PLDL | CA |
| 2006-08-23 | 631-403 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PTJEFFERSN | NY |
| 2006-08-22 | 845-523 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CONGERS | NY |
| 2006-08-22 | 914-810 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CRTNONHDSN | NY |
| 2006-08-04 | 210-881 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX |
| 2006-08-01 | 857-288 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA |
| 2006-07-26 | 619-684 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG SNDG | CA |
| 2006-07-14 | 270-819 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TOMPKINSVL | KY |
| 2006-07-13 | 614-765 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | NEW ALBANY | OH |
| 2006-07-12 | 270-449 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PRINCETON | KY |
| 2006-07-07 | 424-653 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEVERLYHLS | CA |
| 2006-07-07 | 818-859 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRBN BRBN | CA |
| 2006-06-27 | 850-744 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PAXTON | FL |
| 2006-06-12 | 334-866 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | KOWALIGA | AL |
| 2006-06-12 | 937-933 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | TERREHAUTE | OH |
| 2006-05-25 | 913-945 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS | 7593 | KANSASCITY | KS |
| 2006-05-09 | 229-368 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | FORTGAINES | GA |
| 2006-05-09 | 330-991 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | DOYLESTOWN | OH |
| 2006-05-05 | 678-490 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA SO | GA |
| 2006-05-02 | 309-302 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | HAMPTON | IL |
| 2006-04-27 | 224-222 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ELK GROVE | IL |
| 2006-04-25 | 410-600 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | BERLIN | MD |
| 2006-04-12 | 615-807 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | FRANKLIN | TN |
| 2006-04-04 | 702-824 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NV | 9145 | LAS VEGAS | NV |
| 2006-03-30 | 402-908 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | YORK | NE |
| 2006-03-23 | 704-428 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | NORWOOD | NC |
| 2006-03-20 | 704-324 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | WINGATE | NC |
| 2006-03-20 | 704-327 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | MARSHVILLE | NC |
| 2006-03-20 | 810-354 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | FENTON | MI |
| 2006-03-02 | 517-709 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7157 | HOLT | MI |
| 2006-02-24 | 314-676 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO |
| 2006-02-09 | 517-966 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7157 | DIMONDALE | MI |
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.