NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 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
2011-06-22 512-362 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2011-06-22 516-430 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN09 NY
2011-06-22 541-293 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NYSSA OR
2011-06-22 631-620 0–9 XXXall 10 · 5 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 BABYLON NY
2011-06-22 786-328 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2011-06-22 813-297 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2011-06-22 901-232 0–9 XXXall 10 · 3 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-06-22 919-867 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 RALEIGH NC
2011-06-22 929-841 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN11 NY
2011-06-22 980-238 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GASTONIA NC
2011-06-21 204-807 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2011-06-21 205-490 0–9 XXXall 10 · 6 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 BIRMINGHAM AL
2011-06-21 308-482 0XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 CLARKS NE
2011-06-21 414-391 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-21 469-271 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2011-06-21 512-298 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2011-06-21 587-387 not yet reported which blocks → Distributel 081E Calgary —
2011-06-21 647-689 not yet reported which blocks → Distributel 082E Toronto —
2011-06-21 778-690 not yet reported which blocks → Distributel 081E Nanaimo —
2011-06-21 778-696 not yet reported which blocks → Navigata Communications Limited 078G South Kamloops —
2011-06-21 778-698 not yet reported which blocks → Distributel 081E Victoria —
2011-06-21 778-699 not yet reported which blocks → Distributel 081E Kelowna —
2011-06-21 819-991 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Drummondville —
2011-06-21 832-491 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2011-06-21 832-538 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2011-06-21 832-544 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2011-06-21 832-547 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2011-06-21 832-726 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2011-06-21 864-359 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2011-06-20 202-505 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2011-06-20 225-249 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2011-06-20 302-257 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF DELAWARE, LLC - DE 349F DOVER DE
2011-06-20 404-793 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2011-06-20 619-826 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C DULZURA CA
2011-06-20 646-699 0–9 XXXall 10 · 5 holders which blocks → BARR TELL USA, INC. - NY 525G NWYRCYZN01 NY
2011-06-20 858-242 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LA JOLLA CA
2011-06-20 872-233 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2011-06-20 931-651 1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC 4336 COOKEVILLE TN
2011-06-17 201-279 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 KEARNY NJ
2011-06-17 209-661 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2011-06-17 226-935 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Windsor —
2011-06-17 312-221 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2011-06-17 336-405 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 506-998 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Fredericton —
2011-06-17 581-645 not yet reported which blocks → Videotron Ltd. 8306 Trois-Pistoles —
2011-06-17 681-229 0–9 XXXall 10 · 8 holders which blocks → METROPCS, INC. 5562 PRKRSBGZN1 WV
2011-06-17 848-222 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 LAKEWOOD NJ
2011-06-17 856-238 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 VINELAND NJ
2011-06-17 862-255 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 NEWARK NJ
2011-06-16 205-460 0–9 XXXall 10 · 7 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 BIRMINGHAM AL

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.