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
2018-11-06 828-370 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 0509 SYLVA NC
2018-11-06 857-799 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J CAMBRIDGE MA
2018-11-05 226-558 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Orangeville —
2018-11-05 252-899 0XXX1XXX2XXX3XXX4XXX9XXX · 4 holders which blocks → ONVOY, LLC - NC 638E CRESWELL NC
2018-11-05 262-259 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WAUKESHA WI
2018-11-05 405-817 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H HARRAH OK
2018-11-05 425-535 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J EVERETT WA
2018-11-05 480-569 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2018-11-05 581-451 not yet reported which blocks → Videotron Ltd. 8306 Sainte-Marie-de-Beauce —
2018-11-05 581-452 not yet reported which blocks → Videotron Ltd. 8306 Saint-Georges-de-Beauce —
2018-11-05 985-319 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F LULING LA
2018-11-02 202-894 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF D.C., LLC - DC 2801 WSHNGTNZN1 DC
2018-11-02 225-427 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - LA 477H BATONROUGE LA
2018-11-02 236-974 not yet reported which blocks → TELUS Mobility 8301 Kelowna —
2018-11-02 236-975 not yet reported which blocks → TELUS Mobility 8301 New Westminster —
2018-11-02 236-977 not yet reported which blocks → TELUS Mobility 8301 100 Mile House —
2018-11-02 825-992 not yet reported which blocks → TELUS Mobility 8301 Red Deer —
2018-11-02 862-335 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ORANGE NJ
2018-11-02 925-440 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2018-11-02 971-342 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF OREGON, LLC - OR 157F CANNON BCH OR
2018-11-01 480-542 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-01 540-386 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HARTWOOD VA
2018-11-01 551-292 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F KEARNY NJ
2018-11-01 602-560 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-01 614-953 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F CANALWHSTR OH
2018-11-01 614-963 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F WJEFFERSON OH
2018-11-01 623-401 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-01 647-249 not yet reported which blocks → TELUS Integrated Communications 2782 Toronto —
2018-11-01 681-250 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 PINEVILLE WV
2018-11-01 785-616 5XXX which blocks → IDEATEK TELCOM, LLC - KS 014E MILFORD KS
2018-11-01 825-990 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2018-11-01 825-991 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2018-11-01 843-969 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H SULLIVNSIS SC
2018-11-01 930-209 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SELLERSBG IN
2018-11-01 947-214 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G WALLEDLAKE MI
2018-10-31 207-516 0XXX1XXX2XXX3XXX5XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - ME 382D WILTON ME
2018-10-31 234-259 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 TWINSBURG OH
2018-10-31 336-947 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 HIGH POINT NC
2018-10-31 405-851 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 SEMINOLE OK
2018-10-31 573-507 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 COLUMBIA MO
2018-10-31 580-344 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ADA OK
2018-10-31 608-901 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 JANESVILLE WI
2018-10-31 806-999 0–9 XXXall 10 · 3 holders which blocks → USFON, INC. - TX 473F LUBBOCK TX
2018-10-31 815-620 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E MINOOKA IL
2018-10-31 989-931 0XXX2XXX3XXX4XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FARWELL MI
2018-10-30 424-426 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 HAWTHORNE CA
2018-10-30 430-265 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C AVINGER TX
2018-10-30 430-543 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C SIMMS TX
2018-10-30 430-697 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C ANNONA TX
2018-10-30 432-526 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - TX 903C EUNICE WST TX

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.