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 |
|---|---|---|---|---|---|
| 2001-05-24 | 248-971 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | BIRMINGHAM | MI |
| 2001-05-23 | 857-227 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOMERVILLE | MA |
| 2001-05-23 | 978-763 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HUDSON | MA |
| 2001-05-22 | 330-485 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | RITTMAN | OH |
| 2001-05-18 | 443-430 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | MD |
| 2001-05-16 | 810-937 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | PORT HURON | MI |
| 2001-05-11 | 408-216 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNJS WEST | CA |
| 2001-05-11 | 415-343 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNFC CNTRL | CA |
| 2001-05-11 | 415-365 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNFC CNTRL | CA |
| 2001-05-11 | 415-450 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN RAFAEL | CA |
| 2001-05-11 | 415-659 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNFC CNTRL | CA |
| 2001-05-11 | 415-680 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNFC MT-EV | CA |
| 2001-05-11 | 415-840 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNFC JUNPR | CA |
| 2001-05-10 | 213-330 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 01 | CA |
| 2001-05-10 | 213-337 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 01 | CA |
| 2001-05-10 | 213-457 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 01 | CA |
| 2001-05-10 | 213-477 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 07 | CA |
| 2001-05-10 | 213-531 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 10 | CA |
| 2001-05-10 | 213-640 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 10 | CA |
| 2001-05-10 | 323-331 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 02 | CA |
| 2001-05-10 | 323-338 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 02 | CA |
| 2001-05-10 | 323-404 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 03 | CA |
| 2001-05-10 | 323-405 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 04 | CA |
| 2001-05-10 | 323-406 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 05 | CA |
| 2001-05-10 | 323-474 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 03 | CA |
| 2001-05-10 | 323-475 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 05 | CA |
| 2001-05-10 | 323-476 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 06 | CA |
| 2001-05-10 | 323-490 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MONTEBELLO | CA |
| 2001-05-10 | 323-513 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 06 | CA |
| 2001-05-10 | 323-524 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 08 | CA |
| 2001-05-10 | 323-527 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 09 | CA |
| 2001-05-10 | 323-529 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 11 | CA |
| 2001-05-10 | 323-601 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 12 | CA |
| 2001-05-10 | 323-602 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 13 | CA |
| 2001-05-10 | 323-603 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 14 | CA |
| 2001-05-10 | 323-641 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 11 | CA |
| 2001-05-10 | 323-642 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 12 | CA |
| 2001-05-10 | 323-801 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 13 | CA |
| 2001-05-10 | 323-802 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 14 | CA |
| 2001-05-10 | 323-803 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MONTEBELLO | CA |
| 2001-05-10 | 714-696 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | YORBALINDA | CA |
| 2001-05-10 | 714-783 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANAHEIM | CA |
| 2001-05-10 | 714-820 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CYPRESS | CA |
| 2001-05-10 | 714-868 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BUENA PARK | CA |
| 2001-05-10 | 714-872 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | FULLERTON | CA |
| 2001-05-10 | 714-941 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ORANGE | CA |
| 2001-05-10 | 714-982 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PLACENTIA | CA |
| 2001-05-10 | 714-987 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BREA | CA |
| 2001-05-09 | 918-401 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | OWASSO | OK |
| 2001-05-08 | 252-652 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | HAVELOCK | NC |
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.