NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 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
2015-10-27 202-849 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2015-10-27 226-701 not yet reported which blocks → InnSysVoice Corp 383H London —
2015-10-27 365-900 not yet reported which blocks → InnSysVoice Corp 383H Bradford —
2015-10-27 365-901 not yet reported which blocks → InnSysVoice Corp 383H Beeton —
2015-10-27 606-919 1XXX6XXX8XXX9XXX · 2 holders which blocks → PEOPLES TELECOM, LLC 489H BEATTYVL KY
2015-10-27 623-200 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2015-10-27 628-231 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2015-10-27 705-800 not yet reported which blocks → InnSysVoice Corp 383H Barrie —
2015-10-27 705-900 not yet reported which blocks → InnSysVoice Corp 383H Alliston —
2015-10-27 705-907 not yet reported which blocks → InnSysVoice Corp 383H Orillia —
2015-10-23 208-729 0–9 XXXall 10 · 5 holders which blocks → FARMERS MUTUAL TELECOM INC. 857G NEW PLYMTH ID
2015-10-23 208-812 0–9 XXXall 10 · 8 holders which blocks → FARMERS MUTUAL TELECOM INC. 857G PAYETTE ID
2015-10-23 224-540 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ROUND LAKE IL
2015-10-23 270-938 0–9 XXXall 10 · 4 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C BOWLNGGREN KY
2015-10-23 346-402 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEVELAND TX
2015-10-23 407-984 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 ORLANDO FL
2015-10-23 469-329 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2015-10-23 469-970 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 FORNEY TX
2015-10-23 626-493 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2015-10-23 650-457 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2015-10-23 682-404 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2015-10-23 872-724 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2015-10-23 937-993 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 DAYTON OH
2015-10-22 334-500 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J DOTHAN AL
2015-10-22 414-488 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MILWAUKZN1 WI
2015-10-22 720-642 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2015-10-22 813-734 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2015-10-22 813-940 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2015-10-22 901-585 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2015-10-22 954-991 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 FTLAUDERDL FL
2015-10-21 213-231 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 01 CA
2015-10-21 386-406 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LAKE CITY FL
2015-10-21 405-938 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDMOND OK
2015-10-21 480-416 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2015-10-21 480-487 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2015-10-21 619-676 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2015-10-21 657-270 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2015-10-21 661-582 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LANCASTER CA
2015-10-21 863-209 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LAKELAND FL
2015-10-21 907-251 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC 724J FAIRBANKS AK
2015-10-21 929-288 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN03 NY
2015-10-20 306-902 not yet reported which blocks → Bell Mobility 6574 Saskatoon —
2015-10-20 438-846 not yet reported which blocks → Bell Mobility 6574 Montreal —
2015-10-20 506-845 not yet reported which blocks → Bell Mobility Aliant 329A Saint John —
2015-10-20 563-224 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 MAYNARD IA
2015-10-20 563-303 0XXX3XXX7XXX9XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 FAYETTE IA
2015-10-20 563-482 2XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 LAWLER IA
2015-10-20 647-843 not yet reported which blocks → Bell Mobility 6574 Toronto —
2015-10-20 709-850 not yet reported which blocks → Bell Mobility Aliant 329A St. John's —
2015-10-20 747-247 0–9 XXXall 10 · 5 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VAN NUYS CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.