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
2014-01-09 832-983 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2014-01-08 234-262 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 NO CANTON OH
2014-01-08 415-870 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN RAFAEL CA
2014-01-08 661-485 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D PLDL PLDL CA
2014-01-08 707-791 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ROSA CA
2014-01-08 720-450 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DENVER CO
2014-01-08 864-619 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLACKSBURG SC
2014-01-08 971-706 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MCMINNVL OR
2014-01-07 709-735 not yet reported which blocks → Bell Mobility Aliant 329A Churchill Falls —
2014-01-07 807-335 not yet reported which blocks → Bell Mobility 6574 Red Lake —
2014-01-06 479-307 0–9 XXXall 10 · 4 holders which blocks → CSC VOICE, LLC 612K ATKINS AR
2014-01-06 479-315 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → CSC VOICE, LLC 612K DOVER AR
2014-01-03 234-703 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 RAVENNA OH
2014-01-03 479-703 3XXX4XXX8XXX · 2 holders which blocks → CSC VOICE, LLC 612K LAMAR AR
2014-01-03 701-404 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - ND 452F FARGO ND
2014-01-03 870-402 3XXX which blocks → CSC VOICE, LLC 612K MIDWAY AR
2014-01-03 870-407 1XXX4XXX7XXX8XXX · 2 holders which blocks → CSC VOICE, LLC 612K MARVELL AR
2014-01-03 870-470 4XXX7XXX8XXX · 2 holders which blocks → CSC VOICE, LLC 612K MALLARD PT AR
2014-01-03 870-707 1XXX7XXX8XXX9XXX · 2 holders which blocks → CSC VOICE, LLC 612K LAKEVIEW AR
2014-01-03 870-708 3XXX8XXX · 2 holders which blocks → CSC VOICE, LLC 612K WALDO AR
2014-01-03 870-803 1XXX3XXX4XXX8XXX · 3 holders which blocks → CSC VOICE, LLC 612K BAY AR
2014-01-03 870-812 7XXX which blocks → TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G FLIPPIN AR
2014-01-03 984-204 0–9 XXXall 10 · 6 holders which blocks → CSC VOICE, LLC 612K RALEIGH NC
2014-01-02 206-474 0–9 XXXall 10 · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2014-01-02 587-624 not yet reported which blocks → Shaw Telecom Inc. 497E Anzac —
2014-01-02 774-704 0–9 XXXall 10 · 8 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FALL RIVER MA
2014-01-02 778-360 not yet reported which blocks → Distributel 081E Abbotsford —
2014-01-02 778-505 not yet reported which blocks → Navigata Communications Limited 078G Terrace —
2014-01-02 778-550 not yet reported which blocks → Navigata Communications Limited 078G Cranbrook —
2014-01-02 778-560 not yet reported which blocks → Navigata Communications Limited 078G Campbell River —
2014-01-02 971-371 0–9 XXXall 10 · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2013-12-31 224-667 0–9 XXXwhole prefix which blocks → ILLINOIS BELL TEL CO 9329 WAUKEGAN IL
2013-12-31 224-668 0–9 XXXwhole prefix which blocks → ILLINOIS BELL TEL CO 9329 WAUKEGAN IL
2013-12-31 539-302 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OK 409F TULSA OK
2013-12-31 971-701 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SALEM OR
2013-12-30 386-703 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MAYO FL
2013-12-30 470-309 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ADAIRSVL GA
2013-12-30 561-708 0–9 XXXall 10 · 6 holders which blocks → AT&T - LOCAL 7421 BELLEGLADE FL
2013-12-30 657-231 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C SANTA ANA CA
2013-12-30 865-801 0–9 XXXall 10 · 3 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J KNOXVILLE TN
2013-12-26 210-537 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2013-12-26 515-346 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2013-12-26 832-739 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BARKER TX
2013-12-26 832-869 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 SATSUMA TX
2013-12-26 904-530 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 YULEE FL
2013-12-26 970-341 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FASTTRACK COMMUNICATIONS, INC. - CO 330B OLATHE CO
2013-12-26 971-284 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2013-12-24 204-413 not yet reported which blocks → Provincial Tel Inc. 498E Souris —
2013-12-24 204-616 not yet reported which blocks → Provincial Tel Inc. 498E Hartney —
2013-12-24 204-907 not yet reported which blocks → Provincial Tel Inc. 498E Minnedosa —

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.