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
2018-10-09 236-622 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Abbotsford —
2018-10-09 307-487 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 6566 GILLETTE WY
2018-10-09 385-295 0–9 XXXall 10 · 5 holders which blocks → FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2018-10-09 458-237 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - OR 750E ODELL OR
2018-10-09 613-428 not yet reported which blocks → Videotron Ltd. 383F Deseronto —
2018-10-09 825-399 not yet reported which blocks → TELUS 8084 Lethbridge —
2018-10-09 910-781 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → ONVOY, LLC - NC 638E BEULAVILLE NC
2018-10-09 920-808 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F OSHKOSH WI
2018-10-08 504-370 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E LAFITTE LA
2018-10-08 515-732 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-10-08 530-561 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANDERSON CA
2018-10-08 608-540 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLMEN WI
2018-10-08 779-260 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2018-10-08 813-521 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2018-10-08 813-537 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAWST FL
2018-10-08 828-463 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 ENKACANDLR NC
2018-10-08 947-521 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2018-10-05 206-513 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H SEATTLE WA
2018-10-05 360-228 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BREMERTON WA
2018-10-05 475-255 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MERIDEN CT
2018-10-05 531-226 0–9 XXXwhole prefix which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2018-10-05 843-977 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E NICHOLS SC
2018-10-04 236-459 not yet reported which blocks → Videotron Ltd. 383F Port Edward —
2018-10-04 309-506 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ROCKISLAND IL
2018-10-04 346-367 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2018-10-04 431-896 not yet reported which blocks → Westman Media Cooperative Ltd 120F McCreary —
2018-10-04 431-897 not yet reported which blocks → Westman Media Cooperative Ltd 120F Sandy Lake —
2018-10-04 431-898 not yet reported which blocks → Westman Media Cooperative Ltd 120F St. Lazare —
2018-10-04 469-578 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2018-10-04 469-584 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2018-10-04 530-560 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H REDDING CA
2018-10-04 602-563 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H PHOENIX AZ
2018-10-04 603-519 0–9 XXXall 10 · 5 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2018-10-04 610-484 0–9 XXXall 10 · 8 holders which blocks → AIRESPRING, INC. 996H READING PA
2018-10-04 616-287 0–9 XXXall 10 · 2 holders which blocks → TELNET WORLDWIDE, INC. 817J GRAND RPDS MI
2018-10-04 650-439 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2018-10-04 708-556 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOREST IL
2018-10-04 720-614 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H DENVER CO
2018-10-04 747-284 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2018-10-04 747-301 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2018-10-04 856-360 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOORESTOWN NJ
2018-10-04 913-346 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E BONNER SPG KS
2018-10-04 980-294 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E ALTON NC
2018-10-04 980-375 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E DENVER NC
2018-10-03 207-888 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J PORTLAND ME
2018-10-03 289-226 not yet reported which blocks → Videotron Ltd. 383F Grafton —
2018-10-03 343-636 not yet reported which blocks → Videotron Ltd. 383F Ingleside —
2018-10-03 343-980 not yet reported which blocks → Videotron Ltd. 383F Petawawa —
2018-10-03 346-366 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX
2018-10-03 613-705 not yet reported which blocks → Videotron Ltd. 383F Mallorytown —

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.