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
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 937-973 | SPOK, INC. | 6630 | DAYTON | OH | |
| 937-974 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | DAYTON | OH | |
| 937-976 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | OH | |
| 937-977 | TELNYX LLC | 073H | DAYTON | OH | |
| 937-978 | SPOK, INC. | 6630 | ENON | OH | |
| 937-981 | FRONTIER NORTH, INC. - OH | 0615 | GREENFIELD | OH | |
| 937-982 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | BYHALIA | OH | |
| 937-987 | FRONTIER NORTH, INC. - OH | 0615 | NEW VIENNA | OH | |
| 937-996 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | NEWMADISON | OH | |
| 937-997 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | HOLLANSBG | OH | |
| 938-211 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-421 | ONVOY, LLC - AL | 604E | ODEN RIDGE | AL | |
| 938-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | AL | |
| 938-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-700 | AL | ||||
| 938-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-911 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AL | |
| 938-950 | AL | ||||
| 938-958 | AL | ||||
| 938-959 | AL | ||||
| 938-976 | AL | ||||
| 939-204 | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | RIOPIEDRAS | PR | |
| 939-208 | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR | |
| 939-211 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR | |
| 939-218 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 939-220 | NEUTRAL TANDEM - PR | 559F | HUMACAO | PR | |
| 939-227 | LIBERTY MOBILE PUERTO RICO INC. | 639J | PUEBLOVIEJ | PR | |
| 939-235 | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR | |
| 939-238 | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR | |
| 939-239 | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR | |
| 939-252 | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR | |
| 939-303 | NEUTRAL TANDEM - PR | 559F | RIO GRANDE | PR | |
| 939-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR | |
| 939-312 | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR | |
| 939-313 | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR | |
| 939-336 | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | CANOVANAS | PR | |
| 939-337 | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | CANOVANAS | PR | |
| 939-338 | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | RIOPIEDRAS | PR | |
| 939-385 | LIBERTY MOBILE PUERTO RICO INC. | 639J | TRUJILLOAL | PR | |
| 939-388 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 939-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR | |
| 939-436 | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR | |
| 939-438 | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR | |
| 939-442 | SUNCOM DBA T-MOBILE USA | 8645 | GUAYANILLA | PR | |
| 939-489 | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR | |
| 939-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR |
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.