NumberResearchRecent prefix assignments
354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026
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 |
|---|---|---|---|---|---|---|
| 2002-02-07 | 503-468 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | ASTORIA | OR |
| 2002-02-07 | 509-288 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | COLFAX | WA |
| 2002-02-07 | 515-306 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DES MOINES | IA |
| 2002-02-07 | 571-248 | 0–9 XXXall 10 · 4 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | HAYMARKET | VA |
| 2002-02-07 | 601-430 | not yet reported which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | WOODVILLE | MS |
| 2002-02-07 | 601-551 | not yet reported which blocks → | CELLULAR SOUTH, INC. | 6581 | MCCOMB | MS |
| 2002-02-07 | 601-562 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PHILA | MS |
| 2002-02-07 | 662-587 | 7XXX8XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | RIPLEY | MS |
| 2002-02-07 | 724-205 | 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENSBURG | PA |
| 2002-02-07 | 802-349 | 0XXX1XXX2XXX3XXX4XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MIDDLEBURY | VT |
| 2002-02-07 | 802-535 | 0XXX1XXX2XXX3XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ST JOHNSBY | VT |
| 2002-02-07 | 802-673 | 0XXX1XXX2XXX3XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWPORT | VT |
| 2002-02-07 | 802-952 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | VT |
| 2002-02-07 | 908-505 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | MILFORD | NJ |
| 2002-02-06 | 217-704 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARSHALL | IL |
| 2002-02-06 | 254-229 | 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | WACO | TX |
| 2002-02-06 | 585-709 | none assigned yet which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | ROCHESTER | NY |
| 2002-02-06 | 613-222 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2002-02-06 | 620-966 | 2XXX8XXX9XXX · 2 holders which blocks → | TERRA NOVA TELECOM INC. | 145J | HUTCHINSON | KS |
| 2002-02-06 | 662-355 | 5XXX which blocks → | BANDWIDTH.COM CLEC, LLC - MS | 992E | ABERDEEN | MS |
| 2002-02-06 | 716-413 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | DUNKIRK | NY |
| 2002-02-06 | 719-966 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | BUENAVISTA | CO |
| 2002-02-06 | 719-967 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | TRINIDAD | CO |
| 2002-02-06 | 816-838 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | KANSASCITY | MO |
| 2002-02-06 | 850-527 | none assigned yet which blocks → | POWERTEL JACKSONVILLE LICENSES, INC. | 7472 | PANAMACITY | FL |
| 2002-02-06 | 850-528 | none assigned yet which blocks → | POWERTEL JACKSONVILLE LICENSES, INC. | 7472 | TALLAHASSE | FL |
| 2002-02-06 | 913-825 | not yet reported which blocks → | EVERFAST FIBER NETWORKS LLC | 3915 | KANSASCITY | KS |
| 2002-02-06 | 931-292 | 0–9 XXXall 10 · 6 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | PULASKI | TN |
| 2002-02-06 | 931-295 | 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | HOHENWALD | TN |
| 2002-02-06 | 931-297 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | FAYETTEVL | TN |
| 2002-02-06 | 931-298 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | ELKTON | TN |
| 2002-02-06 | 931-299 | 0–9 XXXall 10 · 8 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | WAVERLY | TN |
| 2002-02-06 | 940-463 | 0XXX2XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | MINERLWLLS | TX |
| 2002-02-06 | 970-363 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | FRASER | CO |
| 2002-02-06 | 970-364 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | GRANBY | CO |
| 2002-02-05 | 205-461 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 TELECOM OF ALABAMA, LLC - AL | 7327 | BESSEMER | AL |
| 2002-02-05 | 418-340 | not yet reported which blocks → | TELUS Quebec | 8083 | Saint-Raymond | — |
| 2002-02-05 | 418-390 | not yet reported which blocks → | TELUS Quebec | 8083 | Sainte-Marie-de-Beauce | — |
| 2002-02-05 | 419-517 | 6XXX which blocks → | ONVOY, LLC - OH | 464C | SYLVANIA | OH |
| 2002-02-05 | 419-972 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → | ONVOY, LLC - OH | 464C | CURTICORGN | OH |
| 2002-02-05 | 606-253 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | POWERTEL KENTUCKY LICENSES, INC. | 365C | PIKEVILLE | KY |
| 2002-02-05 | 647-388 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2002-02-05 | 660-365 | 1XXX4XXX6XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PRINCETON | MO |
| 2002-02-05 | 660-868 | 2XXX3XXX5XXX6XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BETHANY | MO |
| 2002-02-05 | 778-388 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | New Westminster | — |
| 2002-02-05 | 778-688 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | New Westminster | — |
| 2002-02-05 | 830-688 | 3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | BANDERA | TX |
| 2002-02-05 | 940-745 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | MINERLWLLS | TX |
| 2002-02-05 | 956-577 | 0–9 XXXall 10 · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | HARLINGEN | TX |
| 2002-02-05 | 956-578 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | MCALLEN | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.