NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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 27
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
2002-03-25 602-465 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2002-03-25 602-475 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2002-03-25 606-258 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CORBIN KY
2002-03-25 614-394 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WESTERVL OH
2002-03-25 662-279 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 IUKA MS
2002-03-25 662-322 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TUPELO MS
2002-03-25 772-579 0XXX1XXX2XXX3XXX4XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FORTPIERCE FL
2002-03-25 772-783 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J SEBASTIAN FL
2002-03-25 780-966 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Edmonton —
2002-03-25 832-332 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2002-03-25 902-791 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Windsor —
2002-03-25 903-771 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SHERMAN TX
2002-03-25 904-294 not yet reported which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 JACKSONVL FL
2002-03-25 920-545 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WATERTOWN WI
2002-03-25 920-547 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SHEBOYGAN WI
2002-03-25 920-933 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 FONDDU LAC WI
2002-03-25 940-215 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HENRIETTA TX
2002-03-25 956-266 not yet reported which blocks → STPCS JOINT VENTURE, LLC 4290 BROWNSVL TX
2002-03-25 956-299 2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 PORTISABEL TX
2002-03-25 970-417 0XXX4XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 MONTROSE CO
2002-03-22 423-388 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ERWIN TN
2002-03-22 606-336 5XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OWINGSVL KY
2002-03-22 614-515 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WORTHINGTN OH
2002-03-22 805-325 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 SANTA YNEZ CA
2002-03-22 805-746 6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VNTRA CNTL CA
2002-03-22 859-473 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLISLE KY
2002-03-22 859-553 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NICHOLASVL KY
2002-03-22 909-578 0XXX which blocks → METROPCS NETWORKS, LLC 899D FONTANA CA
2002-03-22 916-741 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → METROPCS, INC. 5562 SO PLACER CA
2002-03-22 951-259 none assigned yet which blocks → T-MOBILE USA, INC. 6529 PERRIS CA
2002-03-21 205-259 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2002-03-21 205-420 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2002-03-21 209-489 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → METROPCS, INC. 5562 MERCED CA
2002-03-21 209-640 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 TRACY CA
2002-03-21 209-663 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 LODI CA
2002-03-21 209-740 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 TRACY CA
2002-03-21 209-752 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 LOS BANOS CA
2002-03-21 256-265 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
2002-03-21 256-372 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
2002-03-21 262-435 0XXX1XXX2XXX3XXX5XXX7XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 NO ANTIOCH WI
2002-03-21 276-690 0–9 XXXall 10 · 4 holders which blocks → MOUNTAINET TELEPHONE COMPANY - VA 3185 GATE CITY VA
2002-03-21 317-525 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2002-03-21 323-708 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 14 CA
2002-03-21 330-236 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MASSILLON OH
2002-03-21 330-238 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ALLIANCE OH
2002-03-21 330-931 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 KENT OH
2002-03-21 513-392 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MIDDLETOWN OH
2002-03-21 518-353 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MALONE NY
2002-03-21 518-354 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SARANAC LK NY
2002-03-21 530-798 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 GRVY MAIN CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.