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 |
|---|---|---|---|---|---|
| 2002-03-01 | 615-658 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2002-01-29 | 530-350 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SHINGLESPG | CA |
| 2002-01-29 | 901-492 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLLIERVL | TN |
| 2002-01-28 | 224-473 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ROUND LAKE | IL |
| 2002-01-28 | 224-940 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEERFIELD | IL |
| 2002-01-16 | 586-281 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROMEO | MI |
| 2001-12-26 | 781-250 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA |
| 2001-12-15 | 781-345 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BURLINGTON | MA |
| 2001-12-06 | 617-477 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | JAMAICA PL | MA |
| 2001-12-06 | 978-860 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEOMINSTER | MA |
| 2001-11-28 | 224-270 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | ROUND LAKE | IL |
| 2001-11-28 | 224-948 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEERFIELD | IL |
| 2001-11-20 | 848-628 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RAHWAY | NJ |
| 2001-11-20 | 862-757 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LITTLE FLS | NJ |
| 2001-11-14 | 267-224 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DOYLESTOWN | PA |
| 2001-11-14 | 617-224 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA |
| 2001-11-09 | 339-230 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SHARON | MA |
| 2001-11-07 | 515-236 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOONE | IA |
| 2001-10-18 | 412-428 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN14 | PA |
| 2001-10-18 | 412-479 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN12 | PA |
| 2001-10-03 | 781-709 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HANOVER | MA |
| 2001-10-02 | 817-796 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GRAPEVINE | TX |
| 2001-09-21 | 412-637 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN15 | PA |
| 2001-09-21 | 978-702 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HAVERHILL | MA |
| 2001-09-18 | 682-292 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EULESS | TX |
| 2001-09-17 | 440-551 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | PAINESVL | OH |
| 2001-09-14 | 214-975 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FRISCO | TX |
| 2001-09-14 | 214-988 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GRANDPRARI | TX |
| 2001-08-23 | 208-712 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | RATHDRUM | ID |
| 2001-08-22 | 815-828 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | MINOOKA | IL |
| 2001-08-15 | 313-748 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN1 | MI |
| 2001-08-13 | 208-262 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | POST FALLS | ID |
| 2001-08-13 | 267-276 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN43 | PA |
| 2001-07-30 | 253-251 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA | 7274 | PUYALLUP | WA |
| 2001-07-27 | 978-347 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HAMILTON | MA |
| 2001-07-24 | 561-491 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | WPALMBEACH | FL |
| 2001-07-19 | 412-843 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN22 | PA |
| 2001-07-10 | 413-308 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA | 7103 | LUDLOW | MA |
| 2001-07-06 | 267-405 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHPHSBZN33 | PA |
| 2001-06-29 | 857-626 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BELMONT | MA |
| 2001-06-27 | 760-990 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FALLBROOK | CA |
| 2001-06-25 | 440-337 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CHAGRINFLS | OH |
| 2001-06-20 | 412-379 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTTSBGZON6 | PA |
| 2001-06-19 | 412-587 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTTSBGZON7 | PA |
| 2001-06-14 | 724-420 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GREENSBURG | PA |
| 2001-06-06 | 740-879 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CHESHIRCTR | OH |
| 2001-05-31 | 404-795 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA | GA |
| 2001-05-31 | 724-605 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GROVE CITY | PA |
| 2001-05-30 | 425-967 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HALLS LAKE | WA |
| 2001-05-30 | 814-249 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PUNXSUTWNY | 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.