NumberResearchRecent prefix assignments
358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
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 | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-03-28 | 657-580 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2022-03-28 | 659-253 | 0–9 XXXall 10 · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | BIRMINGHAM | AL |
| 2022-03-28 | 672-535 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Cache Creek | — |
| 2022-03-28 | 672-536 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Clearwater | — |
| 2022-03-28 | 672-559 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Dallas | — |
| 2022-03-28 | 672-560 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Douglas Lake | — |
| 2022-03-28 | 681-438 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LOGAN | WV |
| 2022-03-28 | 743-246 | 0XXX1XXX4XXX5XXX · 3 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | PROSPECTHL | NC |
| 2022-03-28 | 762-677 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | TUNNELHILL | GA |
| 2022-03-28 | 769-990 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | JACKSON | MS |
| 2022-03-28 | 779-809 | 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | FULTON | IL |
| 2022-03-28 | 785-613 | 0XXX1XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | TOPEKA | KS |
| 2022-03-28 | 804-679 | 0XXX1XXX7XXX8XXX9XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | OLD CHURCH | VA |
| 2022-03-28 | 986-229 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | BOISE | ID |
| 2022-03-25 | 216-628 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 7532 | CLEVELAND | OH |
| 2022-03-25 | 253-364 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SUMNER | WA |
| 2022-03-25 | 319-776 | 3XXX6XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ROWLEY | IA |
| 2022-03-25 | 319-992 | 0XXX1XXX2XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | TIFFIN | IA |
| 2022-03-25 | 480-863 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ |
| 2022-03-25 | 581-697 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jean-de-Dieu | — |
| 2022-03-25 | 581-698 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Honore (Temiscouata Co.) | — |
| 2022-03-25 | 606-384 | 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → | POWERTEL KENTUCKY LICENSES, INC. | 365C | PAINTSVL | KY |
| 2022-03-25 | 629-273 | 0–9 XXXall 10 · 2 holders which blocks → | POWERTEL NASHVILLE LICENSES, INC. | 7476 | FRANKLIN | TN |
| 2022-03-25 | 641-776 | 0–9 XXXall 10 · 8 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CHARITON | IA |
| 2022-03-25 | 672-477 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | South Kamloops | — |
| 2022-03-25 | 672-712 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ashcroft | — |
| 2022-03-25 | 672-713 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Aspen Park | — |
| 2022-03-25 | 672-767 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Avola | — |
| 2022-03-25 | 672-768 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Barriere | — |
| 2022-03-25 | 672-769 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Blue River | — |
| 2022-03-25 | 709-961 | not yet reported which blocks → | Bell Mobility Aliant | 329A | St. John's | — |
| 2022-03-25 | 720-910 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2022-03-25 | 720-997 | 1XXX7XXX8XXX · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | BENNETT | CO |
| 2022-03-25 | 863-378 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BARTOW | FL |
| 2022-03-24 | 236-779 | not yet reported which blocks → | Bell Mobility | 6574 | Vancouver | — |
| 2022-03-24 | 240-951 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | HAGERSTOWN | MD |
| 2022-03-24 | 240-952 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | HAGERSTOWN | MD |
| 2022-03-24 | 240-953 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | HAGERSTOWN | MD |
| 2022-03-24 | 240-954 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | HAGERSTOWN | MD |
| 2022-03-24 | 254-726 | 0–9 XXXall 10 · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GORDON | TX |
| 2022-03-24 | 307-419 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | CODY | WY |
| 2022-03-24 | 319-767 | 0XXX2XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | KEOKUK | IA |
| 2022-03-24 | 346-626 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SUGAR LAND | TX |
| 2022-03-24 | 365-432 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2022-03-24 | 365-638 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2022-03-24 | 431-947 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2022-03-24 | 464-567 | 0XXX5XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | HARVEY | IL |
| 2022-03-24 | 506-354 | not yet reported which blocks → | Bragg Communications Inc. | 4878 | Miramichi | — |
| 2022-03-24 | 507-815 | 0XXX5XXX6XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MN | 8405 | NEW RICHLD | MN |
| 2022-03-24 | 539-284 | 0XXX2XXX5XXX8XXX9XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OK | 119F | CHECOTAH | OK |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.