NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
— 260-213 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLUMBIACY IN
— 260-217 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D POE HOAGLD IN
— 260-219 not yet reported which blocks → IN
— 260-221 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIGONIER IN
— 260-230 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F BUTLER IN
— 260-238 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → INDIANA BELL TEL CO INC 9325 SPENCERVL IN
— 260-244 8XXX which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 COLUMBIACY IN
— 260-248 0XXX which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 COLUMBIACY IN
— 260-260 not yet reported which blocks → IN
— 260-262 0XXX2XXX · 2 holders which blocks → MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F LIBERTYCTR IN
— 260-274 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - IN 097D WABASH IN
— 260-281 1XXX3XXX6XXX7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 CORUNNA IN
— 260-306 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - IN 097D NOMANCHETR IN
— 260-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 260-312 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FORT WAYNE IN
— 260-316 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANGOLA IN
— 260-317 not yet reported which blocks → IN
— 260-318 7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KENDALLVL IN
— 260-319 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANGOLA IN
— 260-327 1XXX2XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 LARWILL IN
— 260-330 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WABASH IN
— 260-334 1XXX2XXX3XXX4XXX6XXX · 3 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 LINN GROVE IN
— 260-335 0XXX5XXX which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 SALAMONIA IN
— 260-336 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAGRANGE IN
— 260-337 3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 ST JOE IN
— 260-338 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 HUNTERTOWN IN
— 260-341 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 FORT WAYNE IN
— 260-343 4XXX6XXX7XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 KENDALLVL IN
— 260-344 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 BIPPUS IN
— 260-346 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 PETROLEUM IN
— 260-347 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 KENDALLVL IN
— 260-348 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FORT WAYNE IN
— 260-349 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 KENDALLVL IN
— 260-350 5XXX6XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LAGRANGE IN
— 260-351 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 SO MILFORD IN
— 260-352 3XXX5XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 SILVERLAKE IN
— 260-353 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → CRAIGVILLE TELCO DBA ADAMS WELLS TELECOM - IN 383D BLUFFTON IN
— 260-355 1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → INDIANA BELL TEL CO INC 9325 HUNTINGTON IN
— 260-356 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HUNTINGTON IN
— 260-357 2XXX7XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 GARRETT IN
— 260-358 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 HUNTINGTON IN
— 260-359 5XXX8XXX which blocks → INDIANA BELL TEL CO INC 9325 HUNTINGTON IN
— 260-366 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - IN 097D HUNTINGTON IN
— 260-367 none assigned yet which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 MONGO IN
— 260-368 2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 GENEVA IN
— 260-373 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-375 not yet reported which blocks → CITIZENS TEL. CORP. 0751 WARREN IN
— 260-385 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT WAYNE IN
— 260-396 not yet reported which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 LAUD IN
— 260-401 not yet reported which blocks → SPOK, INC. 6630 FORT WAYNE IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.