NumberResearchRecent prefix assignments
371 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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.
Most active assignees, last 30 days
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 937-484 | THE CHAMPAIGN TELEPHONE COMPANY | 0594 | URBANA | OH | |
| 937-485 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-486 | FRONTIER NORTH, INC. - OH | 0615 | PT WILLIAM | OH | |
| 937-488 | FRONTIER NORTH, INC. - OH | 0615 | NEWBRLNGTN | OH | |
| 937-489 | AERIAL COMMUNICATIONS, INC. | 6701 | SIDNEY | OH | |
| 937-490 | LEVEL 3 TELECOM OF OHIO, LLC - OH | 7460 | BEAVERCREK | OH | |
| 937-491 | SPOK, INC. | 6630 | ENON | OH | |
| 937-492 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | SIDNEY | OH | |
| 937-493 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | SIDNEY | OH | |
| 937-494 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | SIDNEY | OH | |
| 937-495 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-496 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-497 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | SIDNEY | OH | |
| 937-498 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | SIDNEY | OH | |
| 937-499 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-506 | TWC IP ENABLED SERVICES, LLC | 793K | TIPP CITY | OH | |
| 937-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | OH | |
| 937-512 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-513 | OH | ||||
| 937-514 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | FRANKLIN | OH | |
| 937-522 | TWC IP ENABLED SERVICES, LLC | 793K | DAYTON | OH | |
| 937-523 | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | SPRINGFLD | OH | |
| 937-524 | T-MOBILE USA, INC. | 6529 | TROY | OH | |
| 937-525 | OHIO BELL TEL CO | 9321 | SPRINGFLD | OH | |
| 937-526 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | VERSAILLES | OH | |
| 937-527 | T-MOBILE USA, INC. | 6529 | WILMINGTON | OH | |
| 937-528 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-530 | BANDWIDTH.COM CLEC, LLC - OH | 001F | MSBGWCRLTN | OH | |
| 937-532 | T-MOBILE USA, INC. | 6529 | XENIA | OH | |
| 937-533 | T-MOBILE USA, INC. | 6529 | EATON | OH | |
| 937-534 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-535 | CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | 309B | DAYTON | OH | |
| 937-536 | T-MOBILE USA, INC. | 6529 | SPRINGFLD | OH | |
| 937-537 | AERIAL COMMUNICATIONS, INC. | 6701 | MARYSVILLE | OH | |
| 937-538 | METROPCS, INC. | 5562 | SIDNEY | OH | |
| 937-539 | AERIAL COMMUNICATIONS, INC. | 6701 | BELLEFNTAN | OH | |
| 937-540 | CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | 309B | ENGLEWOOD | OH | |
| 937-541 | T-MOBILE USA, INC. | 6529 | PIQUA | OH | |
| 937-542 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-543 | T-MOBILE USA, INC. | 6529 | NEWCARLISL | OH | |
| 937-544 | FRONTIER NORTH, INC. - OH | 0615 | WEST UNION | OH | |
| 937-545 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | DAYTON | OH | |
| 937-546 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH | |
| 937-547 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | GREENVILLE | OH | |
| 937-548 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | GREENVILLE | OH | |
| 937-549 | FRONTIER NORTH, INC. - OH | 0615 | MANCHESTER | OH | |
| 937-552 | TWC IP ENABLED SERVICES, LLC | 793K | TROY | OH | |
| 937-554 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | OH | |
| 937-560 | LEVEL 3 TELECOM OF OHIO, LLC - OH | 7460 | MSBGWCRLTN | OH |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.