NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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, all time — NPA 601
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 242
NEW CINGULAR WIRELESS PCS, LLC - GA 80
TELEPAK NETWORKS, INC. - MS 75
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 74
LEVEL 3 COMMUNICATIONS, LLC - MS 67
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 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
— 601-506 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JACKSON MS
— 601-507 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOREST MS
— 601-508 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 LUCEDALE MS
— 601-510 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 JACKSON MS
— 601-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 601-516 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 SUMRALL MS
— 601-517 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 COLLINS MS
— 601-518 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 LAUREL MS
— 601-520 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 HATTIESBG MS
— 601-525 5XXX which blocks → SOUTHEAST MISSISSIPPI TEL. CO. 3301 NEELY MS
— 601-527 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
— 601-528 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 WIGGINS MS
— 601-529 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VICKSBURG MS
— 601-532 none assigned yet which blocks → FRANKLIN TELEPHONE COMPANY, LLC 0454 EDDICETON MS
— 601-535 not yet reported which blocks → FRANKLIN TELEPHONE COMPANY, LLC 0454 HERMANVL MS
— 601-536 none assigned yet which blocks → BAY SPRINGS TEL. CO., INC. 0446 HOMEWOOD MS
— 601-537 7XXX which blocks → BAY SPRINGS TEL. CO., INC. 0446 POLKVILLE MS
— 601-540 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 JACKSON MS
— 601-542 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 OSYKA MS
— 601-543 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HATTIESBG MS
— 601-544 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HATTIESBG MS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.