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
2013-01-07 581-781 not yet reported which blocks → Fibernetics Corporation 464D Quebec —
2013-01-07 587-882 not yet reported which blocks → Fibernetics Corporation 464D Edmonton —
2013-01-07 712-739 0XXX1XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DOON IA
2013-01-07 774-334 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F SOUTHBDG MA
2013-01-07 778-804 not yet reported which blocks → Fibernetics Corporation 464D Richmond —
2013-01-07 786-605 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E MIAMI FL
2013-01-07 808-260 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HONOLULU HI
2013-01-07 843-779 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CHARLESTON SC
2013-01-07 843-799 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FLORENCE SC
2013-01-07 843-945 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MYRTLE BCH SC
2013-01-07 980-458 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J CLEVELAND NC
2013-01-04 424-290 0–9 XXXall 10 · 9 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E EL SEGUNDO CA
2013-01-04 510-210 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RICHMOND CA
2013-01-04 603-260 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J DERRY NH
2013-01-04 720-370 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F DENVER CO
2013-01-04 760-675 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 EL CENTRO CA
2013-01-04 910-361 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LAURINBURG NC
2013-01-03 210-714 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F SANANTONIO TX
2013-01-03 224-318 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J ARLIGTNHTS IL
2013-01-03 606-380 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HILLSBORO KY
2013-01-03 606-709 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SHARPSBURG KY
2013-01-03 786-502 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MIAMI FL
2013-01-03 786-540 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E NORTH DADE FL
2013-01-03 803-764 0–9 XXXall 10 · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K COLUMBIA SC
2013-01-03 843-668 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K COLLINSCK SC
2013-01-02 318-605 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J MONROE LA
2013-01-02 469-507 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2013-01-02 469-570 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 WAXAHACHIE TX
2013-01-02 848-240 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 TOMS RIVER NJ
2012-12-31 234-281 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C AKRON OH
2012-12-31 260-222 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D FORT WAYNE IN
2012-12-31 312-702 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2012-12-31 385-223 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2012-12-31 561-270 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C DELRAY BCH FL
2012-12-31 567-200 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2012-12-28 204-869 not yet reported which blocks → Fido Solutions Inc. 5643 Winnipeg —
2012-12-28 587-756 not yet reported which blocks → TELUS 8084 Edmonton —
2012-12-28 819-742 not yet reported which blocks → Distributel 083E Sherbrooke —
2012-12-27 289-529 not yet reported which blocks → Distributel 082E Oakville —
2012-12-27 301-914 0–9 XXXall 10 · 2 holders which blocks → MOUNTAIN COMMUNICATIONS, LLC DBA PROCOM - MD 676A OAKLAND MD
2012-12-27 306-517 not yet reported which blocks → TELUS Integrated Communications 2782 Regina —
2012-12-27 306-518 not yet reported which blocks → TELUS Integrated Communications 2782 Saskatoon —
2012-12-27 306-994 not yet reported which blocks → Iristel Inc. 154E Regina —
2012-12-27 512-865 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2012-12-27 512-954 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2012-12-27 513-806 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-27 561-409 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BOCA RATON FL
2012-12-27 867-877 not yet reported which blocks → Iristel Inc. 154E Iqaluit —
2012-12-26 313-296 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2012-12-26 408-818 0–9 XXXall 10 · 3 holders which blocks → PACIFIC BELL 9740 SNJS NORTH CA

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.