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 |
|---|---|---|---|---|---|
| 781-506 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RANDOLPH | MA | |
| 781-512 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | MA | |
| 781-515 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEXINGTON | MA | |
| 781-517 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MELROSE | MA | |
| 781-574 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | MA | |
| 781-615 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CANTON | MA | |
| 781-628 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFORD | MA | |
| 781-636 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEDHAM | MA | |
| 781-645 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | MA | |
| 781-657 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEEDHAM | MA | |
| 781-658 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFORD | MA | |
| 781-663 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-693 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-697 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-698 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEXINGTON | MA | |
| 781-712 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MELROSE | MA | |
| 781-716 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WAKEFIELD | MA | |
| 781-719 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEEDHAM | MA | |
| 781-735 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HINGHAM | MA | |
| 781-743 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BURLINGTON | MA | |
| 781-778 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEXINGTON | MA | |
| 781-782 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-803 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WEYMOUTH | MA | |
| 781-832 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | STONEHAM | MA | |
| 781-846 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | KINGSTON | MA | |
| 781-852 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BURLINGTON | MA | |
| 781-902 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-904 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-906 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-907 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-912 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MALDEN | MA | |
| 781-915 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEDHAM | MA | |
| 781-917 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRAINTREE | MA | |
| 781-922 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REVERE | MA | |
| 781-930 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRAINTREE | MA | |
| 781-949 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NORWOOD | MA | |
| 781-970 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-972 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEEDHAM | MA | |
| 781-977 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WINCHESTER | MA | |
| 781-997 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WELLESLEY | MA | |
| 781-998 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BURLINGTON | MA | |
| 786-217 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | HOMESTEAD | FL | |
| 786-437 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL | |
| 786-497 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL | |
| 786-513 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL | |
| 786-544 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | PERRINE | FL | |
| 786-545 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | HOMESTEAD | FL | |
| 786-549 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | PERRINE | FL | |
| 786-923 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | NORTH DADE | FL | |
| 786-924 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
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.