NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2014-05-29 774-513 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTBORO MA
2014-05-29 936-267 0–9 XXXall 10 · 2 holders which blocks → CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2109 CONROE TX
2014-05-28 469-904 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2014-05-28 506-503 not yet reported which blocks → Iristel Inc. 154E Woodstock —
2014-05-28 515-219 0–9 XXXall 10 · 6 holders which blocks → QWEST CORPORATION 9631 ADEL IA
2014-05-28 515-420 0–9 XXXall 10 · 6 holders which blocks → QWEST CORPORATION 9631 POLK CITY IA
2014-05-28 647-948 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2014-05-28 669-236 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNJS WEST CA
2014-05-28 682-303 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 FORT WORTH TX
2014-05-28 803-757 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F SUMTER SC
2014-05-28 805-422 0–9 XXXall 10 · 7 holders which blocks → METROPCS NETWORKS, LLC 899D SIMIVALLEY CA
2014-05-28 862-274 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 POMPTONLKS NJ
2014-05-28 867-292 not yet reported which blocks → Iristel Inc. 154E Behchoko —
2014-05-28 941-203 0–9 XXXall 10 · 5 holders which blocks → BARR TELL USA, INC. - FL 305H SARASOTA FL
2014-05-27 226-352 not yet reported which blocks → TELUS Integrated Communications 2782 Tillsonburg —
2014-05-27 249-217 not yet reported which blocks → TELUS Integrated Communications 2782 Espanola —
2014-05-27 302-505 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
2014-05-27 343-222 not yet reported which blocks → TELUS Integrated Communications 2782 Picton —
2014-05-27 385-239 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2014-05-27 402-810 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2014-05-27 478-441 1XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CADWELL GA
2014-05-27 512-399 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F THORNDTHRL TX
2014-05-27 512-648 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F WIMBERLEY TX
2014-05-27 581-213 not yet reported which blocks → TELUS Quebec 2243 La Pocatiere —
2014-05-27 581-214 not yet reported which blocks → TELUS Quebec 2243 Riviere-du-Loup —
2014-05-27 581-442 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Roberval —
2014-05-27 830-240 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CARRIZOSPG TX
2014-05-27 873-201 not yet reported which blocks → TELUS Quebec 2243 Ste-Eulalie —
2014-05-26 226-260 not yet reported which blocks → Videotron Ltd. 383F Windsor —
2014-05-26 705-703 not yet reported which blocks → Fibernetics Corporation 464D Gravenhurst —
2014-05-26 705-704 not yet reported which blocks → Fibernetics Corporation 464D Huntsville —
2014-05-23 306-300 not yet reported which blocks → Access Communications Co-operative Limited 280H Bienfait —
2014-05-23 306-559 not yet reported which blocks → Access Communications Co-operative Limited 280H Regina —
2014-05-23 306-687 not yet reported which blocks → Access Communications Co-operative Limited 280H Estevan —
2014-05-23 306-701 not yet reported which blocks → Access Communications Co-operative Limited 280H Esterhazy —
2014-05-23 306-702 not yet reported which blocks → Access Communications Co-operative Limited 280H Balgonie —
2014-05-23 306-707 not yet reported which blocks → Access Communications Co-operative Limited 280H Melville —
2014-05-23 306-708 not yet reported which blocks → Access Communications Co-operative Limited 280H Yorkton —
2014-05-23 306-709 not yet reported which blocks → Access Communications Co-operative Limited 280H Kamsack —
2014-05-23 306-710 not yet reported which blocks → Access Communications Co-operative Limited 280H Canora —
2014-05-23 306-870 not yet reported which blocks → Access Communications Co-operative Limited 280H Weyburn —
2014-05-23 306-913 not yet reported which blocks → Access Communications Co-operative Limited 280H Midale —
2014-05-23 306-919 not yet reported which blocks → Access Communications Co-operative Limited 280H Milestone —
2014-05-23 307-228 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - WY 081F GILLETTE WY
2014-05-23 307-364 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - WY 081F GREENRIVER WY
2014-05-23 386-281 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C DAYTONABCH FL
2014-05-23 470-243 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D VILLA RICA GA
2014-05-23 470-254 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA GA
2014-05-23 475-223 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2014-05-23 774-440 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.