NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2004-02-05 905-739 not yet reported which blocks → TELUS Integrated Communications 2782 Thornhill —
2004-02-05 985-858 0XXX1XXX8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HOUMA LA
2004-02-04 319-238 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IA 221F OELWEIN IA
2004-02-04 347-223 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2004-02-04 607-239 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ENDICOTT NY
2004-02-04 646-272 0–9 XXXall 10 · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
2004-02-04 646-280 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-02-04 757-299 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 NRFOLKZON1 VA
2004-02-03 608-318 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SUNPRAIRIE WI
2004-02-03 718-315 0–9 XXXwhole prefix which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN06 NY
2004-02-02 416-855 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Toronto —
2004-02-02 506-663 not yet reported which blocks → Aliant Telecom(NB) 8090 Saint John —
2004-02-02 787-459 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2004-02-02 902-344 not yet reported which blocks → Aliant Telecom (NS) 8089 Halifax —
2004-01-30 206-744 0–9 XXXwhole prefix which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2004-01-30 207-662 0–9 XXXwhole prefix which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-ME 5111 PORTLAND ME
2004-01-30 208-669 not yet reported which blocks → INLAND CELLULAR LLC 1484 MOSCOW ID
2004-01-30 409-277 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ANAHUAC TX
2004-01-30 832-550 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOUSTON TX
2004-01-30 832-565 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2004-01-29 404-399 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 ATLANTA GA
2004-01-29 514-370 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2004-01-29 514-371 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2004-01-29 778-867 not yet reported which blocks → TELUS Mobility 8301 Vancouver —
2004-01-29 828-725 not yet reported which blocks → WINDSTREAM COMMUNICATIONS, INC. - NC 7970 HICKORY NC
2004-01-28 256-675 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 ALEXANDRCY AL
2004-01-28 318-489 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BLANCHARD LA
2004-01-28 678-669 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2004-01-28 757-257 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F NRFOLKZON1 VA
2004-01-28 778-686 not yet reported which blocks → TELUS Mobility 8301 Vancouver —
2004-01-28 778-689 not yet reported which blocks → TELUS Mobility 8301 Vancouver —
2004-01-28 778-887 not yet reported which blocks → TELUS Mobility 8301 Vancouver —
2004-01-28 787-452 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2004-01-28 787-478 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2004-01-28 787-668 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 RIO GRANDE PR
2004-01-28 902-401 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Halifax —
2004-01-27 206-245 0–9 XXXall 10 · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2004-01-27 251-252 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2004-01-27 308-241 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 KIMBALL NE
2004-01-27 434-422 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA 7238 CHARLOTSVL VA
2004-01-27 501-442 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LITTLEROCK AR
2004-01-27 504-285 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEWORLEANS LA
2004-01-27 507-295 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MN 184D WORTHINGTN MN
2004-01-27 570-878 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SCRANTON PA
2004-01-27 570-972 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT POCONO PA
2004-01-27 678-616 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 CLERMONT GA
2004-01-27 949-973 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J CAPITRNVLY CA
2004-01-26 575-935 not yet reported which blocks → PLATEAU TELECOMMUNICATIONS, INC. - NM 777B CLOVIS NM
2004-01-26 630-687 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NAPERVILLE IL
2004-01-23 304-703 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOOREFIELD WV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.