NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-11-15 361-338 0XXX2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLC - TX 903C CHARCO TX
2018-11-15 361-344 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - TX 903C PAWNEE TX
2018-11-15 571-401 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HERNDON VA
2018-11-15 639-238 not yet reported which blocks → Access Communications Co-operative Limited 280H Creighton —
2018-11-15 737-253 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D GEORGETOWN TX
2018-11-15 757-970 0–9 XXXwhole prefix which blocks → VONAGE AMERICA LLC 197D NRFOLKZON2 VA
2018-11-15 775-799 0–9 XXXall 10 · 6 holders which blocks → HD CARRIER LLC 321J RENO NV
2018-11-15 814-962 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CLEARFIELD PA
2018-11-15 825-467 not yet reported which blocks → TELUS 8084 Edmonton —
2018-11-15 913-350 0–9 XXXwhole prefix which blocks → VONAGE AMERICA LLC 197D KANSASCITY KS
2018-11-15 913-914 0–9 XXXwhole prefix which blocks → ONVOY, LLC - KS 205F KANSASCITY KS
2018-11-15 956-539 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D LAREDO TX
2018-11-14 205-350 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D BESSEMER AL
2018-11-14 407-561 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ORLANDO FL
2018-11-14 516-760 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2018-11-14 581-863 not yet reported which blocks → Videotron Ltd. 8306 Chateau-Richer —
2018-11-14 667-257 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D COLUMBIA MD
2018-11-14 667-258 0–9 XXXall 10 · 2 holders which blocks → AIRESPRING, INC. 996H BALTIMORE MD
2018-11-14 786-642 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2018-11-13 208-910 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D NAMPA ID
2018-11-13 216-260 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D TERRACE OH
2018-11-13 225-269 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F TUNICA LA
2018-11-13 225-430 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F DONALDSNVL LA
2018-11-13 234-264 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D YOUNGSTOWN OH
2018-11-13 236-427 not yet reported which blocks → TELUS 8086 Vancouver —
2018-11-13 262-256 0XXX1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F DELAFIELD WI
2018-11-13 308-937 0XXX3XXX6XXX7XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K HILDRETH NE
2018-11-13 352-579 0–9 XXXwhole prefix which blocks → VONAGE AMERICA LLC 197D OCALA FL
2018-11-13 425-428 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ISSAQUAH WA
2018-11-13 573-527 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MO 093F BIRCH TREE MO
2018-11-13 680-206 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E WILLIAMSON NY
2018-11-13 720-793 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2018-11-13 786-635 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIAMI FL
2018-11-12 470-430 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2018-11-12 470-437 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2018-11-12 720-828 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2018-11-12 952-214 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2018-11-09 272-226 0–9 XXXall 10 · 9 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 BERWICK PA
2018-11-09 364-202 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KY 987E JORDAN KY
2018-11-09 430-247 0–9 XXXall 10 · 6 holders which blocks → VONAGE AMERICA LLC 197D TYLER TX
2018-11-09 479-350 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D BENTONVL AR
2018-11-09 503-461 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OR 750E GRANDRONDE OR
2018-11-09 561-461 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C WPALMBEACH FL
2018-11-09 581-448 not yet reported which blocks → Videotron Ltd. 8306 Saint-Prosper-de-Dorchester —
2018-11-09 754-755 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C FTLAUDERDL FL
2018-11-09 786-796 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C MIAMI FL
2018-11-09 908-446 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 LINDEN NJ
2018-11-09 940-287 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F DENTON TX
2018-11-09 956-448 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D MCALLEN TX
2018-11-08 231-253 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CADILLAC MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.