NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-08-02 262-289 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
2012-08-02 262-977 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RACINE WI
2012-08-02 289-725 not yet reported which blocks → Bell Canada 8051 Oakville —
2012-08-02 720-307 0–9 XXXall 10 · 3 holders which blocks → AT&T - LOCAL 7421 ALLNSPKLYN CO
2012-08-02 803-567 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 COLUMBIA SC
2012-08-01 231-559 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E MCBAIN MI
2012-08-01 270-373 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NO GARRETT KY
2012-08-01 270-981 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K PAYNEVILLE KY
2012-08-01 307-823 0XXX1XXX2XXX3XXX6XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA WY-LLC 879G CHEYENNE WY
2012-08-01 541-507 0–9 XXXall 10 · 5 holders which blocks → QWEST CORPORATION 9638 GRANTSPASS OR
2012-08-01 681-434 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - WV 489F GARY WV
2012-08-01 740-913 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SUNBURY OH
2012-07-31 262-226 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2012-07-31 414-242 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-07-30 205-720 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F BESSEMER AL
2012-07-30 336-826 0XXX1XXX7XXX · 2 holders which blocks → UNITED STATES CELLULAR - NC 6282 CRESTON NC
2012-07-30 438-265 not yet reported which blocks → Zayo Canada Inc. 8304 Pointe-Claire —
2012-07-30 587-438 not yet reported which blocks → Bell Mobility 6574 Calgary —
2012-07-30 620-219 0XXX5XXX · 2 holders which blocks → UNITED WIRELESS COMMUNICATIONS, INC. 401D CIMARRON KS
2012-07-30 647-526 not yet reported which blocks → Bell Mobility 6574 Toronto —
2012-07-30 709-977 not yet reported which blocks → TELUS Integrated Communications 2782 Churchill Falls —
2012-07-30 845-388 1XXX3XXX4XXX9XXX · 4 holders which blocks → BARR TELL USA, INC. - NY 525G POUGHKEPSI NY
2012-07-27 219-276 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 E CHICAGO IN
2012-07-27 321-203 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WINTERPARK FL
2012-07-26 419-742 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F PUT IN BAY OH
2012-07-26 587-337 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2012-07-26 647-525 not yet reported which blocks → Bell Mobility 6574 Toronto —
2012-07-26 709-330 not yet reported which blocks → Bell Mobility Aliant 329A St. John's —
2012-07-26 778-367 not yet reported which blocks → TELUS 8086 Trail —
2012-07-25 438-934 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2012-07-25 513-713 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2012-07-25 571-781 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F NOKESVILLE VA
2012-07-25 613-201 not yet reported which blocks → Westport Telephone Company Limited 920D Perth —
2012-07-25 613-972 not yet reported which blocks → Westport Telephone Company Limited 920D Portland —
2012-07-25 615-450 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F HARTSVILLE TN
2012-07-25 647-656 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2012-07-25 681-214 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F FAIRMONT WV
2012-07-25 681-495 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F WESTON WV
2012-07-25 803-281 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F WHITMIRE SC
2012-07-25 901-401 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F WESTWHITEV TN
2012-07-25 937-713 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-25 971-251 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F RAINIER OR
2012-07-24 210-570 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2012-07-24 234-903 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2012-07-24 330-251 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2012-07-24 417-771 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2012-07-24 614-903 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GAHANNA OH
2012-07-24 804-424 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F GOOCHLAND VA
2012-07-23 502-881 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 LA GRANGE KY
2012-07-23 515-207 0–9 XXXall 10 · 2 holders which blocks → MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.