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
2003-03-06 601-676 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 PHILA MS
2003-02-04 601-523 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 WIGGINS MS
2003-01-07 601-653 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 NATCHEZ MS
2003-01-07 601-667 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 CANTON MS
2003-01-07 601-680 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 MCCOMB MS
2003-01-07 601-682 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 LAUREL MS
2002-12-10 601-617 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PORTGIBSON MS
2002-12-10 601-651 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 LAUREL MS
2002-12-10 601-652 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 POPLARVL MS
2002-10-31 601-501 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 VICKSBURG MS
2002-10-31 601-620 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 HATTIESBG MS
2002-10-31 601-675 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPAK NETWORKS, INC. - MS 5278 MENDENHALL MS
2002-10-09 601-571 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 NATCHEZ MS
2002-10-09 601-628 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VICKSBURG MS
2002-10-09 601-647 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPAK NETWORKS, INC. - MS 5278 CRYSTALSPG MS
2002-09-12 601-690 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 COLUMBIA MS
2002-09-10 601-609 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 JACKSON MS
2002-09-10 601-610 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 HATTIESBG MS
2002-09-10 601-614 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
2002-09-10 601-621 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 MERIDIAN MS
2002-09-10 601-627 1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 NEWTONHKRY MS
2002-08-06 601-564 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 FOREST MS
2002-08-06 601-574 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 HAZLEHURST MS
2002-08-06 601-596 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLULAR SOUTH, INC. 6581 HATTIESBG MS
2002-08-06 601-623 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPAK NETWORKS, INC. - MS 5278 HAZLEHURST MS
2002-08-06 601-624 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 JACKSON MS
2002-07-12 601-349 1XXX4XXX5XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ELLISVILLE MS
2002-07-12 601-563 3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPAK NETWORKS, INC. - MS 5278 WESSON MS
2002-07-12 601-575 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 PHILA MS
2002-07-12 601-726 not yet reported which blocks → TEC OF JACKSON, INC. - MS 3704 HATTIESBG MS
2002-06-06 601-337 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 PICAYUNE MS
2002-06-06 601-724 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BRANDON MS
2002-06-06 601-834 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 GLOSTER MS
2002-06-06 601-910 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 CLINTON MS
2002-06-06 601-931 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BROOKHAVEN MS
2002-05-10 601-494 2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 WIGGINS MS
2002-05-10 601-509 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 WAYNESBORO MS
2002-05-10 601-519 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 JACKSON MS
2002-05-10 601-547 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 PORTGIBSON MS
2002-05-10 601-566 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 JACKSON MS
2002-05-10 601-778 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 LAUREL MS
2002-05-10 601-897 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 NATCHEZ MS
2002-04-11 601-319 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 LAUREL MS
2002-04-11 601-495 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 LUCEDALE MS
2002-04-11 601-513 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
2002-03-14 601-377 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 TYLERTOWN MS
2002-03-14 601-470 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 LAUREL MS
2002-03-14 601-489 0XXX1XXX5XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLLINS MS
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

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.