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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2012-10-08 513-401 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-10-08 574-334 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2012-10-08 615-801 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MURFREESBO TN
2012-10-08 646-650 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NWYRCYZN01 NY
2012-10-08 732-592 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F MANASQUAN NJ
2012-10-08 732-884 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F KEANSBURG NJ
2012-10-05 201-885 0–9 XXXall 10 · 6 holders which blocks → BARR TELL USA, INC. - NJ 917G JERSEYCITY NJ
2012-10-05 210-610 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANANTONIO TX
2012-10-05 587-370 not yet reported which blocks → Bell Mobility 6574 Lethbridge —
2012-10-05 647-528 not yet reported which blocks → Bell Mobility 6574 Toronto —
2012-10-05 709-332 not yet reported which blocks → Bell Mobility Aliant 329A Marystown —
2012-10-05 774-309 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTPORT MA
2012-10-05 862-254 0–9 XXXall 10 · 4 holders which blocks → CSC VOICE, LLC 612K NETCONG NJ
2012-10-05 971-304 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2012-10-05 985-393 0XXX1XXX3XXX · 3 holders which blocks → PRIDE NETWORK, INC. DBA NTS OF LOUISIANA - LA 959G HAMMOND LA
2012-10-04 206-549 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 SEATTLE WA
2012-10-04 310-504 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REDONDO CA
2012-10-04 415-539 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC CNTRL CA
2012-10-04 819-904 not yet reported which blocks → Videotron Ltd. 787G Ottawa-Hull —
2012-10-04 858-249 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LA JOLLA CA
2012-10-04 917-631 0–9 XXXall 10 · 3 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN03 NY
2012-10-04 925-332 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CONCORD CA
2012-10-04 970-615 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 MONTROSE CO
2012-10-03 253-625 0–9 XXXall 10 · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 TACOMA WA
2012-10-03 431-210 not yet reported which blocks → Bell West Inc. 2933 Brandon —
2012-10-03 971-276 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2012-10-02 203-580 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F BYRAM CT
2012-10-02 203-780 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEW HAVEN CT
2012-10-02 281-512 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 HSTNSUBURB TX
2012-10-02 310-307 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 W ANGELES CA
2012-10-02 475-239 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F TRUMBULL CT
2012-10-02 707-755 0–9 XXXall 10 · 5 holders which blocks → SONIC TELECOM, LLC - CA 433E SANTA ROSA CA
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

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.