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
2012-10-02 760-292 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY LLC 593K PAUMA VLY CA
2012-10-02 832-720 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2012-10-02 909-344 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 CLAREMONT CA
2012-10-02 929-210 0–9 XXXall 10 · 5 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN06 NY
2012-10-02 972-589 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2012-10-02 972-802 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2012-10-02 985-486 not yet reported which blocks → PRIDE NETWORK, INC. DBA NTS OF LOUISIANA - LA 959G PONCHATOUL LA
2012-10-01 219-321 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2012-10-01 260-203 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J FORT WAYNE IN
2012-10-01 260-206 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FORT WAYNE IN
2012-10-01 317-661 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2012-10-01 317-662 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2012-10-01 317-671 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2012-10-01 317-801 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2012-10-01 317-832 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2012-10-01 317-912 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2012-10-01 323-483 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-10-01 608-683 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 PORTAGE WI
2012-09-30 440-406 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 ELYRIA OH
2012-09-28 224-228 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC 224C BARRINGTON IL
2012-09-28 309-201 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - IL 6265 PEKIN IL
2012-09-28 313-236 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2012-09-28 313-495 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2012-09-28 331-215 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2012-09-28 480-341 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2012-09-28 480-374 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-28 563-231 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - IA 6266 DUBUQUE IA
2012-09-28 587-293 not yet reported which blocks → TELUS 8084 Calgary —
2012-09-28 587-301 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Swan Hills —
2012-09-28 587-730 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 High Level —
2012-09-28 720-541 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2012-09-28 872-209 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2012-09-28 918-981 0–9 XXXall 10 · 7 holders which blocks → UNITED STATES CELLULAR - OK 6272 PRYOR OK
2012-09-28 971-301 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E SALEM OR
2012-09-28 971-302 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PORTLAND OR
2012-09-27 224-307 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EVANSTON IL
2012-09-27 507-400 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E FARIBAULT MN
2012-09-27 574-318 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F SOUTH BEND IN
2012-09-27 845-288 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E BEACON NY
2012-09-27 845-328 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E ESOPUS NY
2012-09-27 903-414 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F HOWE TX
2012-09-27 903-419 0–9 XXXall 10 · 8 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F POTTSBORO TX
2012-09-27 917-780 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN12 NY
2012-09-27 917-946 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN03 NY
2012-09-27 956-404 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F BROWNSVL TX
2012-09-27 956-407 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROWNSVL TX
2012-09-26 231-227 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K HONOR MI
2012-09-26 231-295 7XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K LAKE CITY MI
2012-09-26 231-359 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MECOSTA MI
2012-09-26 231-626 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K LEVERING MI

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.