NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 601-424 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 COLUMBIA MS
— 601-425 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAUREL MS
— 601-426 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAUREL MS
— 601-427 4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 MADISON MS
— 601-428 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAUREL MS
— 601-429 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - MS 719E VICKSBURG MS
— 601-431 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 NATCHEZ MS
— 601-432 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-433 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 LAUREL MS
— 601-434 4XXX5XXX7XXX · 2 holders which blocks → METROPCS, INC. 5562 HATTIESBG MS
— 601-435 2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 BROOKHAVEN MS
— 601-436 3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PURVIS MS
— 601-437 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PORTGIBSON MS
— 601-438 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 LAUREL MS
— 601-441 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 COLUMBIA MS
— 601-442 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NATCHEZ MS
— 601-443 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NATCHEZ MS
— 601-444 6XXX7XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 COLUMBIA MS
— 601-445 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NATCHEZ MS
— 601-446 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NATCHEZ MS
— 601-447 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HATTIESBG MS
— 601-450 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 HATTIESBG MS
— 601-452 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 TAYLORSVL MS
— 601-454 none assigned yet which blocks → METROPCS, INC. 5562 JACKSON MS
— 601-456 0XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 VICKSBURG MS
— 601-458 not yet reported which blocks → SPOK, INC. 6630 MERIDIAN MS
— 601-459 not yet reported which blocks → SPOK, INC. 6630 HATTIESBG MS
— 601-460 0XXX1XXX2XXX4XXX6XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CLINTON MS
— 601-462 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 MERIDIAN MS
— 601-463 4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 POPLARVL MS
— 601-466 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HATTIESBG MS
— 601-469 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FOREST MS
— 601-471 not yet reported which blocks → SPOK, INC. 6630 JACKSON MS
— 601-477 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ELLISVILLE MS
— 601-478 not yet reported which blocks → SPOK, INC. 6630 JACKSON MS
— 601-479 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
— 601-480 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
— 601-481 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-482 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-483 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-484 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-485 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-486 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-490 6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 MERIDIAN MS
— 601-497 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JACKSON MS
— 601-498 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 LAUREL MS
— 601-499 0–9 XXXall 10 · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA MS - LLC 458C MADISON MS
— 601-502 3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-503 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA MS - LLC 458C JACKSON MS
— 601-505 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAZLEHURST MS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.