NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2001-09-25 225-286 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ZACHARY LA
2001-09-25 225-314 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ST GABRIEL LA
2001-09-25 228-245 not yet reported which blocks → PAETEC ITEL, LLC 829J PASSCHRSTN MS
2001-09-25 267-249 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2001-09-25 316-880 3XXX4XXX5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WICHITA KS
2001-09-25 352-532 not yet reported which blocks → PAETEC ITEL, LLC 829J FOREST FL
2001-09-25 402-617 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINCOLN NE
2001-09-25 405-487 0XXX6XXX7XXX8XXX9XXX which blocks → SOUTHWESTERN BELL 9533 OKLA CITY OK
2001-09-25 484-614 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN29 PA
2001-09-25 631-237 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 BRIDGEMPTN NY
2001-09-25 631-238 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → CSC VOICE, LLC 612K MONTAUK PT NY
2001-09-25 724-820 0XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J CANONSBURG PA
2001-09-25 724-994 0XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J NEWKNSNGTN PA
2001-09-25 785-438 0XXX2XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 TOPEKA KS
2001-09-25 812-582 4XXX5XXX6XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 PETERSBURG IN
2001-09-25 812-584 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LAWRENCEBG IN
2001-09-25 832-866 0XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2001-09-25 850-343 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GULFBREEZE FL
2001-09-25 850-365 not yet reported which blocks → PAETEC ITEL, LLC 829J MILTON FL
2001-09-25 863-399 1XXX3XXX4XXX5XXX7XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 AVON PARK FL
2001-09-25 918-313 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2001-09-25 918-502 not yet reported which blocks → SOUTHWESTERN BELL 9533 TULSA OK
2001-09-24 225-803 8XXX which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2001-09-24 337-248 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 BROUSSARD LA
2001-09-24 403-539 not yet reported which blocks → Zayo Canada Inc. 8304 Calgary —
2001-09-24 404-641 not yet reported which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2001-09-24 404-642 not yet reported which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2001-09-24 404-643 not yet reported which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2001-09-24 404-644 not yet reported which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2001-09-24 417-689 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2001-09-24 443-837 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ANNAPOLIS MD
2001-09-24 443-850 not yet reported which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2001-09-24 443-928 5XXX6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2001-09-24 514-965 not yet reported which blocks → Fido Solutions Inc. 5643 Montreal —
2001-09-24 603-509 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ROCHESTER NH
2001-09-24 682-294 3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F WEATHERFD TX
2001-09-24 682-622 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2001-09-24 774-214 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SHREWSBURY MA
2001-09-24 858-583 5XXX7XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 SNDG LVTA CA
2001-09-24 858-688 4XXX7XXX which blocks → METROPCS, INC. 5562 SNDG MRMS CA
2001-09-24 905-927 not yet reported which blocks → Bell Canada 8051 Gormley —
2001-09-23 216-322 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-09-23 661-382 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PLDL PLDL CA
2001-09-21 214-208 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2001-09-21 254-238 0XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 COPPERASCV TX
2001-09-21 314-258 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2001-09-21 330-858 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
2001-09-21 330-933 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
2001-09-21 402-208 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2001-09-21 408-509 not yet reported which blocks → METROPCS, INC. 5562 SNJS NORTH CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.