NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2021-04-21 318-764 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBIA LA
2021-04-21 361-833 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J C CHRISTI TX
2021-04-21 425-400 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H AMES LAKE WA
2021-04-21 425-500 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BELLEVUE WA
2021-04-21 425-600 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ISSAQUAH WA
2021-04-21 438-567 not yet reported which blocks → Bell Mobility 6574 Montreal —
2021-04-21 463-426 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J INDIANAPLS IN
2021-04-21 470-756 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2021-04-21 470-807 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2021-04-21 470-810 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2021-04-21 470-833 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2021-04-21 564-234 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BUCKLEY WA
2021-04-21 564-465 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H ORTING WA
2021-04-21 564-529 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ROCHESTER WA
2021-04-21 579-852 not yet reported which blocks → TELUS Quebec 2243 St-Aime —
2021-04-21 579-853 not yet reported which blocks → TELUS Quebec 2243 Ste-Helene-de-Bagot —
2021-04-21 579-854 not yet reported which blocks → TELUS Quebec 2243 St-Hugues —
2021-04-21 579-855 not yet reported which blocks → TELUS Quebec 2243 St-Simon —
2021-04-21 581-735 not yet reported which blocks → Bell Mobility 6574 Quebec —
2021-04-21 585-837 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BATAVIA NY
2021-04-21 602-887 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2021-04-21 623-887 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2021-04-21 659-228 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TUSCALOOSA AL
2021-04-21 667-317 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MD 6119 PRINCEANNE MD
2021-04-21 769-258 0–9 XXXall 10 · 3 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 BROOKHAVEN MS
2021-04-21 769-259 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VICKSBURG MS
2021-04-21 873-526 not yet reported which blocks → TELUS Quebec 2243 Notre-Dame-de-la-Salette —
2021-04-21 873-527 not yet reported which blocks → TELUS Quebec 2243 Shawville —
2021-04-21 873-528 not yet reported which blocks → TELUS Quebec 2243 Perkins —
2021-04-21 930-322 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - IN 097D PAOLI IN
2021-04-20 401-746 2XXX3XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CAROLINA RI
2021-04-20 437-645 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-04-20 657-844 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SILVERADO CA
2021-04-20 848-633 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MIDDLETOWN NJ
2021-04-19 234-766 2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H WESTFLDCTR OH
2021-04-19 279-699 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H RIO LINDA CA
2021-04-19 302-560 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BRIDGEVL DE
2021-04-19 302-592 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CAMDEN DE
2021-04-19 302-606 0XXX1XXX2XXX3XXX6XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FELTON DE
2021-04-19 302-701 2XXX3XXX4XXX5XXX7XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H HARTLY DE
2021-04-19 326-529 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CENTERVLLE OH
2021-04-19 346-460 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAMMEL TX
2021-04-19 346-461 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2021-04-19 365-427 not yet reported which blocks → Bell Mobility 6574 Hamilton —
2021-04-19 380-356 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H HARRISBURG OH
2021-04-19 380-529 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GAHANNA OH
2021-04-19 479-416 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BENTONVL AR
2021-04-19 479-421 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BENTONVL AR
2021-04-19 479-423 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BENTONVL AR
2021-04-19 479-428 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BENTONVL AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.