NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
2011-11-15 647-816 not yet reported which blocks → ISP Telecom Inc. 4727 Toronto —
2011-11-15 647-817 not yet reported which blocks → ISP Telecom Inc. 4727 Toronto —
2011-11-15 709-320 not yet reported which blocks → Bell Mobility Aliant 329A St. Lawrence —
2011-11-15 787-980 0–9 XXXall 10 · 2 holders which blocks → LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2011-11-15 828-578 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HICKORY NC
2011-11-15 860-837 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J HARTFORD CT
2011-11-15 904-267 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 HILLIARD FL
2011-11-15 904-320 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 CALLAHAN FL
2011-11-14 267-449 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2011-11-14 270-523 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C UTICA KY
2011-11-14 270-593 0XXX1XXX2XXX3XXX7XXX · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C SACRAMENTO KY
2011-11-14 270-616 0XXX2XXX3XXX7XXX · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C W LOUISVL KY
2011-11-14 270-794 0XXX1XXX7XXX · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C SORGHO KY
2011-11-14 303-515 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2011-11-14 317-434 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CUMBERLAND IN
2011-11-14 318-551 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MONROE LA
2011-11-14 320-301 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MN 184D MONTEVIDEO MN
2011-11-14 404-698 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2011-11-14 404-904 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2011-11-14 470-514 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2011-11-14 478-294 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 MARSHALLVL GA
2011-11-14 479-240 0XXX2XXX3XXX4XXX · 4 holders which blocks → WINDSTREAM ARKANSAS, INC. 1691 ELKINS AR
2011-11-14 501-331 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → WINDSTREAM ARKANSAS, INC. 1691 PERRYVILLE AR
2011-11-14 501-402 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM ARKANSAS, INC. 1691 GREENBRIER AR
2011-11-14 703-523 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J DALE CITY VA
2011-11-14 808-369 0–9 XXXall 10 · 6 holders which blocks → SERVPAC INCORPORATED - HI 517G HONOLULU HI
2011-11-14 918-927 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2011-11-14 985-202 0–9 XXXall 10 · 5 holders which blocks → HUNT TELECOMMUNICATIONS, LLC - LA 181D MADISONVL LA
2011-11-11 240-754 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WALDORF MD
2011-11-11 270-336 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C BREMEN KY
2011-11-11 270-372 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C PLEASATRDG KY
2011-11-11 270-613 0XXX1XXX2XXX3XXX7XXX8XXX · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C HABIT KY
2011-11-11 270-673 0XXX1XXX7XXX · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C ISLAND KY
2011-11-11 561-203 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E JUPITER FL
2011-11-11 661-434 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLDL PLDL CA
2011-11-11 813-308 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E TAMPAEST FL
2011-11-11 832-570 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2011-11-11 917-831 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN14 NY
2011-11-10 202-760 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2011-11-10 226-369 not yet reported which blocks → TELUS Integrated Communications 2782 Elora —
2011-11-10 226-370 not yet reported which blocks → TELUS Integrated Communications 2782 Fergus —
2011-11-10 240-265 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-11-10 240-272 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-11-10 319-536 0–9 XXXall 10 · 6 holders which blocks → SHELLSBURG CABLEVISION, INC. - IA 527G CEDAR RPDS IA
2011-11-10 386-201 9XXX which blocks → WINDSTREAM FLORIDA, INC. 0336 HIGH SPG FL
2011-11-10 386-203 9XXX which blocks → WINDSTREAM FLORIDA, INC. 0336 CRESCENTCY FL
2011-11-10 407-203 0–9 XXXall 10 · 3 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L ORLANDO FL
2011-11-10 587-268 not yet reported which blocks → Bell West Inc. 2933 Stony Plain —
2011-11-10 614-603 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 COLUMBUS OH
2011-11-10 702-701 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAS VEGAS NV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.