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 318
NEW CINGULAR WIRELESS PCS, LLC - GA 110
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
2003-05-30 318-430 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HORNBECK LA
2003-05-30 318-498 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINNSBORO LA
2003-05-30 318-499 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MER ROUGE LA
2003-05-30 318-501 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EPPS LA
2003-05-30 318-502 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBIA LA
2003-02-19 318-405 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ST LANDRY LA
2002-05-20 318-235 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2002-04-19 318-217 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WATERPROOF LA
2002-04-19 318-231 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LKPROVIDNC LA
2002-04-19 318-233 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GEORGETOWN LA
2002-04-19 318-421 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONTEREY LA
2002-04-19 318-531 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SICILY IS LA
2002-04-11 318-294 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
2002-04-04 318-209 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINNFIELD LA
2002-04-04 318-301 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ST JOSEPH LA
2002-03-18 318-237 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2002-03-14 318-286 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
2002-03-13 318-272 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
2001-08-20 318-359 3XXX4XXX5XXX6XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MARKSVILLE LA
2001-05-16 318-537 7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2001-03-27 318-332 2XXX3XXX4XXX5XXX6XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NATCHITCHS LA
2001-03-14 318-268 3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MINDEN LA
2001-03-14 318-277 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYCE LA
2001-03-14 318-334 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RAYVILLE LA
2001-03-14 318-341 4XXX5XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLULAH LA
2001-03-12 318-278 4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RUSTON LA
2001-02-12 318-560 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
2001-02-02 318-623 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-201 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-218 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-229 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-243 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RUSTON LA
— 318-267 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
— 318-290 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-308 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-347 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-348 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
— 318-393 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-403 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JONESVILLE LA
— 318-419 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-426 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-438 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NATCHITCHS LA
— 318-447 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-452 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-458 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-469 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-470 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-481 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALEXANDRIA LA
— 318-518 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
— 318-547 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA

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.