NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 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 28
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
2019-08-02 236-608 not yet reported which blocks → Iristel Inc. 154E Vancouver —
2019-08-02 236-609 not yet reported which blocks → Iristel Inc. 154E Vancouver —
2019-08-02 236-706 not yet reported which blocks → Iristel Inc. 154E West Vancouver —
2019-08-02 236-707 not yet reported which blocks → Iristel Inc. 154E West Vancouver —
2019-08-02 236-708 not yet reported which blocks → Iristel Inc. 154E West Vancouver —
2019-08-02 581-381 not yet reported which blocks → TELUS Quebec 2243 St-Ephrem-de-Beauce —
2019-08-02 581-625 not yet reported which blocks → TELUS Quebec 2243 St-Victor-de-Beauce —
2019-08-02 602-610 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-02 608-605 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - WI 225C KENDALL WI
2019-08-02 706-640 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D RANGER GA
2019-08-02 815-658 0XXX1XXX2XXX4XXX6XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 NEWARK IL
2019-08-02 848-276 0–9 XXXall 10 · 6 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 PTPLEASANT NJ
2019-08-02 902-608 not yet reported which blocks → Iristel Inc. 154E Windsor —
2019-08-02 902-609 not yet reported which blocks → Iristel Inc. 154E Windsor —
2019-08-02 930-800 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H BOONVILLE IN
2019-08-02 930-900 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H DUBOIS IN
2019-08-01 365-866 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Brampton —
2019-08-01 517-246 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G LANSING MI
2019-08-01 571-415 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HAYMARKET VA
2019-08-01 573-666 0XXX1XXX2XXX6XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BOWLNGGREN MO
2019-08-01 573-800 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CENTER MO
2019-08-01 573-900 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H PERRYVILLE MO
2019-08-01 608-570 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 RICHLD CTR WI
2019-08-01 608-684 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F FOOTVILLE WI
2019-08-01 640-529 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MOUNTHOLLY NJ
2019-08-01 660-300 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H GRANT CITY MO
2019-08-01 660-444 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H GLASGOW MO
2019-08-01 660-800 0XXX1XXX5XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H CHILLICOTH MO
2019-08-01 660-900 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WARSAW MO
2019-08-01 769-529 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H RAYMOND MS
2019-08-01 873-807 not yet reported which blocks → Iristel Inc. 154E Trois-Rivieres —
2019-07-31 361-252 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F C CHRISTI TX
2019-07-31 506-910 not yet reported which blocks → Iristel Inc. 154E Saint John —
2019-07-31 639-803 not yet reported which blocks → Iristel Inc. 154E Saskatoon —
2019-07-31 639-804 not yet reported which blocks → Iristel Inc. 154E Saskatoon —
2019-07-31 727-655 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H STPETERSBG FL
2019-07-31 765-340 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D LAFAYETTE IN
2019-07-31 815-604 0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC 224C BELVIDERE IL
2019-07-31 925-414 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2019-07-30 206-741 0–9 XXXall 10 · 4 holders which blocks → VOIP INNOVATIONS, LLC 597F SEATTLE WA
2019-07-30 216-279 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C TERRACE OH
2019-07-30 216-284 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C INDEPNDNCE OH
2019-07-30 216-293 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C CLEVELAND OH
2019-07-30 249-703 not yet reported which blocks → Iristel Inc. 154E Lindsay —
2019-07-30 343-807 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2019-07-30 343-808 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2019-07-30 343-809 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2019-07-30 438-605 not yet reported which blocks → Iristel Inc. 154E Montreal —
2019-07-30 438-606 not yet reported which blocks → Iristel Inc. 154E Montreal —
2019-07-30 438-607 not yet reported which blocks → Iristel Inc. 154E Montreal —

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.