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
Sep 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 937-257 | LEVEL 3 TELECOM OF OHIO, LLC - OH | 7460 | DAYTON | OH | |
| 937-258 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-259 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-260 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH | |
| 937-262 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-263 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-264 | OHIO BELL TEL CO | 9321 | VANDALIA | OH | |
| 937-265 | OHIO BELL TEL CO | 9321 | PITCHIN | OH | |
| 937-266 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH | |
| 937-267 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-268 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-269 | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 7532 | DAYTON | OH | |
| 937-271 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | DAYTON | OH | |
| 937-272 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | DAYTON | OH | |
| 937-273 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | ELDORADO | OH | |
| 937-274 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-275 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-276 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-277 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-278 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-279 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-280 | PAETEC ITEL, LLC | 829J | VANDALIA | OH | |
| 937-281 | CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | 309B | DAYTON | OH | |
| 937-282 | SPOK, INC. | 6630 | DAYTON | OH | |
| 937-283 | FRONTIER NORTH, INC. - OH | 0615 | WILMINGTON | OH | |
| 937-284 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | SPRINGFLD | OH | |
| 937-285 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-286 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH | |
| 937-287 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | DAYTON | OH | |
| 937-288 | OHIO BELL TEL CO | 9321 | DANVILLE | OH | |
| 937-289 | FRONTIER NORTH, INC. - OH | 0615 | CLARKSVL | OH | |
| 937-290 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-291 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-292 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | BELLEFNTAN | OH | |
| 937-293 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-294 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-295 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | FT LORAMIE | OH | |
| 937-296 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-297 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-298 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-299 | OHIO BELL TEL CO | 9321 | DAYTON | OH | |
| 937-301 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH | |
| 937-304 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-305 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-306 | PAETEC ITEL, LLC | 829J | BEAVERCREK | OH | |
| 937-307 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | DAYTON | OH | |
| 937-308 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | NEWCARLISL | OH | |
| 937-309 | AERIAL COMMUNICATIONS, INC. | 6701 | MARYSVILLE | OH | |
| 937-310 | PAETEC ITEL, LLC | 829J | BELLBROOK | OH | |
| 937-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | 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.