NumberResearchRecent prefix assignments
355 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
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 734-981 | MICHIGAN BELL TEL CO | 9323 | PLYMOUTH | MI | |
| 734-983 | MICHIGAN BELL TEL CO | 9323 | PLYMOUTH | MI | |
| 734-984 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | FLAT ROCK | MI | |
| 734-985 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | YPSILANTI | MI | |
| 734-988 | MI | ||||
| 734-989 | MI | ||||
| 734-991 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WYANDOTTE | MI | |
| 734-992 | COMCAST IP PHONE, LLC | 318J | ROMULUS | MI | |
| 734-994 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-995 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-996 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-997 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 734-998 | MICHIGAN BELL TEL CO | 9323 | ANN ARBOR | MI | |
| 737-205 | ONVOY, LLC - TX | 903C | AUSTIN | TX | |
| 737-211 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-218 | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | AUSTIN | TX | |
| 737-225 | METROPCS, INC. | 5562 | ROCKDALE | TX | |
| 737-242 | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX | |
| 737-243 | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | AUSTIN | TX | |
| 737-247 | ONVOY, LLC - TX | 903C | AUSTIN | TX | |
| 737-271 | ONVOY, LLC - TX | 903C | DRIPPNGSPG | TX | |
| 737-304 | ONVOY SPECTRUM, LLC | 624H | AUSTIN | TX | |
| 737-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-322 | BANDWIDTH.COM CLEC, LLC - TX | 004F | ADAMSVILLE | TX | |
| 737-337 | ONVOY, LLC - TX | 903C | FENTRESS | TX | |
| 737-353 | TERRA NOVA TELECOM INC. | 145J | BUDA | TX | |
| 737-372 | ONVOY, LLC - TX | 903C | BUCHANNDAM | TX | |
| 737-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-437 | ONVOY, LLC - TX | 903C | THORNDTHRL | TX | |
| 737-443 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX | |
| 737-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-537 | ONVOY, LLC - TX | 903C | LAMPASAS | TX | |
| 737-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | TX | |
| 737-610 | ONVOY, LLC - TX | 903C | AUSTIN | TX | |
| 737-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-615 | ONVOY, LLC - TX | 903C | AUSTIN | TX | |
| 737-700 | TX | ||||
| 737-703 | ONVOY, LLC - TX | 903C | AUSTIN | TX | |
| 737-708 | METROPCS, INC. | 5562 | AUSTIN | TX | |
| 737-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-734 | ONVOY, LLC - TX | 903C | LIBERTY HL | TX | |
| 737-773 | ONVOY, LLC - TX | 903C | JARRELL | TX | |
| 737-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-830 | TX | ||||
| 737-911 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 737-932 | ONVOY, LLC - TX | 903C | AUSTIN | TX | |
| 737-950 | TX | ||||
| 737-958 | TX | ||||
| 737-959 | TX | ||||
| 737-976 | TX |
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.