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
— 601-320 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BROOKHAVEN MS
— 601-321 4XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-322 5XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ROXIE MS
— 601-323 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAUREL MS
— 601-325 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J HATTIESBG MS
— 601-326 1XXX2XXX which blocks → TEC OF JACKSON, INC. - MS 3704 JACKSON MS
— 601-327 0XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 BROOKHAVEN MS
— 601-328 not yet reported which blocks → SPOK, INC. 6630 JACKSON MS
— 601-329 0XXX2XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 HATTIESBG MS
— 601-331 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 JACKSON MS
— 601-332 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HATTIESBG MS
— 601-334 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NATCHEZ MS
— 601-335 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LAUREL MS
— 601-338 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 MCLAIN MS
— 601-339 0XXX1XXX4XXX6XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 CLINTON MS
— 601-342 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 LAUREL MS
— 601-344 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAUREL MS
— 601-346 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-347 0XXX which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 PICAYUNE MS
— 601-351 5XXX6XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-352 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-353 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-354 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-355 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-356 none assigned yet which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E PORTGIBSON MS
— 601-357 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLULAR SOUTH, INC. 6581 NEWTONHKRY MS
— 601-358 not yet reported which blocks → PAETEC ITEL, LLC 829J PICAYUNE MS
— 601-359 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-360 8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-361 not yet reported which blocks → PAETEC ITEL, LLC 829J NATCHEZ MS
— 601-362 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-363 0XXX3XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 LUCEDALE MS
— 601-364 4XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-365 0XXX2XXX7XXX · 2 holders which blocks → METROPCS, INC. 5562 POPLARVL MS
— 601-366 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-367 0XXX1XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 WIGGINS MS
— 601-368 6XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-369 not yet reported which blocks → PAETEC ITEL, LLC 829J LAUREL MS
— 601-370 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-371 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-372 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-373 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-374 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 RALEIGH MS
— 601-375 8XXX which blocks → BAY SPRINGS TEL. CO., INC. 0446 SOSO MS
— 601-376 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-378 none assigned yet which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E LUCEDALE MS
— 601-379 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PICAYUNE MS
— 601-380 not yet reported which blocks → TELETOUCH COMMUNICATIONS, INC. 6591 BROOKHAVEN MS
— 601-381 8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 WAYNESBORO MS
— 601-384 none assigned yet which blocks → FRANKLIN TELEPHONE COMPANY, LLC 0454 MEADVILLE 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.