NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
— 601-386 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 POPLARVL MS
— 601-387 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E JACKSON MS
— 601-389 4XXX7XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PHILA MS
— 601-391 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J CANTON MS
— 601-394 none assigned yet which blocks → SOUTHEAST MISSISSIPPI TEL. CO. 3301 LEAKESVL MS
— 601-395 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCCOMB MS
— 601-396 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 MIZE MS
— 601-397 6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 JACKSON MS
— 601-399 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAUREL MS
— 601-400 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 VICKSBURG MS
— 601-402 2XXX7XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 HATTIESBG MS
— 601-403 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 POPLARVL MS
— 601-404 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX MS
— 601-405 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-407 3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CANTON MS
— 601-408 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 HATTIESBG MS
— 601-409 6XXX9XXX which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 MERIDIAN MS
— 601-410 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 WAYNESBORO MS
— 601-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 601-412 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 BROOKHAVEN MS
— 601-413 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 MCCOMB MS
— 601-414 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 JACKSON MS
— 601-415 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VICKSBURG MS
— 601-416 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PHILA MS
— 601-417 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 NATCHEZ MS
— 601-420 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-421 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JACKSON MS
— 601-422 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAUREL MS
— 601-423 not yet reported which blocks → TELEPAK NETWORKS, INC. - MS 5278 MAGEE MS
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.