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
2013-09-30 872-802 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2013-09-30 872-806 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2013-09-30 872-808 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2013-09-30 913-803 0XXX2XXX7XXX · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J NORTONVL KS
2013-09-27 430-703 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F WHITEWRGHT TX
2013-09-27 430-803 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F JACKSON TX
2013-09-27 430-808 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F LONE OAK TX
2013-09-27 469-815 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2013-09-27 682-808 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2013-09-27 778-771 not yet reported which blocks → Iristel Inc. 154E Abbotsford —
2013-09-27 819-206 not yet reported which blocks → Videotron Ltd. 8306 Ferme-Neuve —
2013-09-27 819-387 not yet reported which blocks → Videotron Ltd. 8306 Lac-des-Ecorces —
2013-09-27 819-403 not yet reported which blocks → Videotron Ltd. 8306 Lac-du-Cerf —
2013-09-27 819-814 not yet reported which blocks → Videotron Ltd. 8306 Ste-Anne-du-Lac —
2013-09-27 832-849 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2013-09-27 929-251 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN12 NY
2013-09-27 979-803 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F BURTON TX
2013-09-26 203-666 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BRIDGEPORT CT
2013-09-26 267-359 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHLDLPHZN2 PA
2013-09-26 385-626 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 OGDEN UT
2013-09-26 415-610 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2013-09-26 510-365 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 OKLD BKLY CA
2013-09-26 510-480 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2013-09-26 586-205 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2013-09-26 586-348 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2013-09-26 586-428 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2013-09-26 623-999 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2013-09-26 903-369 0–9 XXXwhole prefix which blocks → PEOPLES COMMUNICATION, INC. -TX 135H MINEOLA TX
2013-09-25 579-217 not yet reported which blocks → TELUS Quebec 2243 Vaudreuil —
2013-09-25 581-836 not yet reported which blocks → TELUS Quebec 2243 Loretteville —
2013-09-25 581-837 not yet reported which blocks → TELUS Quebec 2243 Stoneham —
2013-09-25 581-838 not yet reported which blocks → TELUS Quebec 2243 Charny —
2013-09-25 581-839 not yet reported which blocks → TELUS Quebec 2243 St-Nicolas —
2013-09-25 587-832 not yet reported which blocks → Bell Mobility 6574 Calgary —
2013-09-25 651-504 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 STILLWATER MN
2013-09-25 786-631 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2013-09-24 205-518 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BIRMINGHAM AL
2013-09-24 432-240 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 MIDLAND TX
2013-09-24 567-320 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LAFAYETTE OH
2013-09-24 567-802 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GOMER OH
2013-09-24 581-833 not yet reported which blocks → TELUS Quebec 8083 Donnacona —
2013-09-24 581-834 not yet reported which blocks → TELUS Quebec 8083 Matane —
2013-09-24 702-848 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-24 778-590 not yet reported which blocks → TELUS 8086 Newton —
2013-09-23 682-802 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2013-09-23 705-244 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Capreol —
2013-09-23 705-379 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Lively —
2013-09-23 705-452 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Sturgeon Falls —
2013-09-23 705-631 not yet reported which blocks → NorthernTel Limited Partnership 055H Cobalt —
2013-09-23 916-846 0–9 XXXall 10 · 5 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 3964 RSVL MAIN CA

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.