NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2018-11-07 581-865 not yet reported which blocks → TELUS Quebec 2243 St-Prime —
2018-11-07 641-609 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - IA 221F ALEXANDER IA
2018-11-07 715-517 1XXX7XXX · 2 holders which blocks → NTERA, LLC - WI 129J HOLCOMBE WI
2018-11-07 786-799 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J MIAMI FL
2018-11-07 813-683 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J TAMPACEN FL
2018-11-06 229-800 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D ALBANY GA
2018-11-06 234-261 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D GARRETTSVL OH
2018-11-06 254-343 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H WACO TX
2018-11-06 260-263 0–9 XXXwhole prefix which blocks → VONAGE AMERICA LLC 197D FORT WAYNE IN
2018-11-06 334-592 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PHENIXCITY AL
2018-11-06 463-216 0–9 XXXwhole prefix which blocks → VONAGE AMERICA LLC 197D CARMEL IN
2018-11-06 509-530 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2018-11-06 581-819 not yet reported which blocks → TELUS Quebec 2243 Albanel —
2018-11-06 581-841 not yet reported which blocks → TELUS Quebec 2243 Chambord —
2018-11-06 581-842 not yet reported which blocks → TELUS Quebec 2243 Delisle —
2018-11-06 581-843 not yet reported which blocks → TELUS Quebec 2243 Desbiens —
2018-11-06 581-844 not yet reported which blocks → TELUS Quebec 2243 Hebertville —
2018-11-06 581-845 not yet reported which blocks → TELUS Quebec 2243 Hebertville-Station —
2018-11-06 581-846 not yet reported which blocks → TELUS Quebec 2243 Lac Bouchette —
2018-11-06 581-847 not yet reported which blocks → TELUS Quebec 2243 Metabetchouan —
2018-11-06 757-808 0–9 XXXall 10 · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 WILLIAMSBG VA
2018-11-06 804-579 0–9 XXXwhole prefix which blocks → NUSO, LLC 551G RICHMOND VA
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 —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.