NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
— 812-273 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 MADISON IN
— 812-274 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MADISON IN
— 812-275 9XXX which blocks → INDIANA BELL TEL CO INC 9325 BEDFORD IN
— 812-276 5XXX6XXX7XXX which blocks → INDIANA BELL TEL CO INC 9325 BEDFORD IN
— 812-277 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 BEDFORD IN
— 812-278 0XXX1XXX7XXX which blocks → INDIANA BELL TEL CO INC 9325 BEDFORD IN
— 812-279 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BEDFORD IN
— 812-280 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-281 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 TERREHAUTE IN
— 812-282 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-283 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-284 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-285 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-287 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BLOOMINGTN IN
— 812-288 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-289 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 NEWWSHNGTN IN
— 812-290 2XXX which blocks → T-MOBILE USA, INC. 6529 LAWRENCEBG IN
— 812-291 1XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 VINCENNES IN
— 812-293 1XXX2XXX8XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 NEWWSHNGTN IN
— 812-294 0XXX2XXX5XXX6XXX8XXX9XXX which blocks → FRONTIER NORTH, INC. - IN 0779 HENRYVILLE IN
— 812-295 0XXX which blocks → FRONTIER NORTH, INC. - IN 0779 LOOGOOTEE IN
— 812-296 3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOOGOOTEE IN
— 812-298 4XXX5XXX6XXX7XXX · 2 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 TERREHAUTE IN
— 812-299 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 TERREHAUTE IN
— 812-303 not yet reported which blocks → TWC IP ENABLED SERVICES, LLC 793K EVANSVILLE IN
— 812-304 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C PRINCETON IN
— 812-305 9XXX which blocks → METROPCS, INC. 5562 EVANSVILLE IN
— 812-306 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-307 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MT VERNON IN
— 812-309 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C JASPER IN
— 812-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 812-312 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - IN 097D BATESVILLE IN
— 812-314 1XXX5XXX7XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-315 1XXX2XXX3XXX4XXX6XXX7XXX · 6 holders which blocks → TELNYX LLC 073H ELBERFELD IN
— 812-316 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F VINCENNES IN
— 812-318 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 BLOOMINGTN IN
— 812-319 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-320 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 BLOOMINGTN IN
— 812-321 0XXX3XXX4XXX6XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 WHEATLAND IN
— 812-322 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 BLOOMINGTN IN
— 812-323 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-324 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 BRUCEVILLE IN
— 812-325 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLOOMINGTN IN
— 812-326 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 ST ANTHONY IN
— 812-327 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLOOMINGTN IN
— 812-328 4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FREELANDVL IN
— 812-330 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-331 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-332 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-333 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.