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 256
NEW CINGULAR WIRELESS PCS, LLC - GA 114
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
2002-10-14 256-515 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
2002-10-03 256-668 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RUSSELLVL AL
2002-05-20 256-206 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATHENS AL
2002-04-03 256-375 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLADEGA AL
2002-04-03 256-483 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
2002-04-03 256-585 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
2001-07-26 256-343 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
2001-04-21 256-347 3XXX5XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2001-03-23 256-298 5XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOAZ AL
2001-03-09 256-242 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SECTION AL
— 256-201 2XXX5XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HEFLIN AL
— 256-239 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
— 256-244 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SCOTTSBORO AL
— 256-276 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ASHLAND AL
— 256-282 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
— 256-283 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
— 256-316 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-318 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
— 256-321 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATHENS AL
— 256-326 2XXX3XXX5XXX6XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-385 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
— 256-390 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-393 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-404 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SYLACAUGA AL
— 256-412 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
— 256-431 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATHENS AL
— 256-436 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RUSSELLVL AL
— 256-438 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-454 7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
— 256-473 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
— 256-477 6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBERTVL AL
— 256-478 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-481 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-484 0XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CENTRE AL
— 256-493 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLADEGA AL
— 256-506 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GUNTERSVL AL
— 256-520 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-527 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-529 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-548 3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STEVENSON AL
— 256-556 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
— 256-565 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
— 256-566 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
— 256-577 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
— 256-603 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-604 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-606 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
— 256-622 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-627 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
— 256-651 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL

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.