NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2012-02-14 929-234 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN06 NY
2012-02-13 267-264 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-02-13 267-326 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-02-13 267-431 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-02-13 312-216 0–9 XXXall 10 · 7 holders which blocks → FIRST COMMUNICATIONS, LLC 460K CHICGOZN01 IL
2012-02-13 404-596 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-02-13 570-536 0–9 XXXall 10 · 5 holders which blocks → SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 CARBONDALE PA
2012-02-13 575-325 not yet reported which blocks → PLATEAU TELECOMMUNICATIONS, INC. - NM 777B CANNON AFB NM
2012-02-13 720-599 0–9 XXXall 10 · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 3467 DENVER CO
2012-02-13 903-902 not yet reported which blocks → ETEX COMMUNCATIONS, LLC DBA ETEX TELECOM - TX 3196 GLADEWATER TX
2012-02-13 918-480 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SPERRY OK
2012-02-13 970-549 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GRAND JCT CO
2012-02-10 202-808 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J WSHNGTNZN1 DC
2012-02-10 202-810 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2012-02-10 306-514 not yet reported which blocks → SaskTel Mobility 9868 Saskatoon —
2012-02-10 306-516 not yet reported which blocks → SaskTel Mobility 9868 Yorkton —
2012-02-10 319-200 not yet reported which blocks → IMON COMMUNICATIONS, LLC - IA 695G CEDAR RPDS IA
2012-02-10 423-480 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KINGSPORT TN
2012-02-10 512-808 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J AUSTIN TX
2012-02-10 571-298 0–9 XXXall 10 · 8 holders which blocks → METROPCS, INC. 5562 DALE CITY VA
2012-02-10 587-325 not yet reported which blocks → Iristel Inc. 154E Calgary —
2012-02-10 587-326 not yet reported which blocks → Iristel Inc. 154E Calgary —
2012-02-10 671-972 not yet reported which blocks → PTI PACIFICA INC. 387C AGANA GU
2012-02-10 702-713 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2012-02-10 702-717 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2012-02-10 702-754 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2012-02-10 702-763 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2012-02-10 705-621 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Sudbury —
2012-02-10 719-305 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF COLORADO, LLC - CO 7590 COLORDOSPG CO
2012-02-10 862-260 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 TELECOM OF NEW JERSEY, LP - NJ 2771 MORRISTOWN NJ
2012-02-10 872-203 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2012-02-09 226-846 not yet reported which blocks → Brooke Telecom Co-operative Ltd. 692G Alvinston —
2012-02-09 226-848 not yet reported which blocks → Brooke Telecom Co-operative Ltd. 692G Watford —
2012-02-09 479-340 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2012-02-09 581-444 not yet reported which blocks → Bell Mobility 6574 Fermont —
2012-02-09 604-265 not yet reported which blocks → Iristel Inc. 154E North Vancouver —
2012-02-09 604-305 not yet reported which blocks → Iristel Inc. 154E North Vancouver —
2012-02-09 613-604 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2012-02-09 613-912 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2012-02-09 714-461 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D FULLERTON CA
2012-02-09 808-445 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - HI 9414 HONOLULU HI
2012-02-09 813-922 0–9 XXXall 10 · 5 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPASTH FL
2012-02-09 904-323 0–9 XXXall 10 · 2 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 JACKSONVL FL
2012-02-09 904-337 0–9 XXXall 10 · 6 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 JACKSONVL FL
2012-02-08 206-454 0–9 XXXall 10 · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2012-02-08 206-596 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 841C SEATTLE WA
2012-02-08 269-359 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C KALAMAZOO MI
2012-02-08 313-241 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLCV - MI 543C DETROITZN4 MI
2012-02-08 502-615 0–9 XXXall 10 · 2 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C LOUISVILLE KY
2012-02-08 616-426 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI

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.