NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2011-05-04 647-743 not yet reported which blocks → ISP Telecom Inc. 4727 Toronto —
2011-05-04 816-315 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY MO
2011-05-04 913-223 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
2011-05-04 980-277 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E MOUNTHOLLY NC
2011-05-03 201-381 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 UNION CITY NJ
2011-05-03 239-600 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FORT MYERS FL
2011-05-03 347-943 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN06 NY
2011-05-03 347-946 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN07 NY
2011-05-03 505-253 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-03 585-364 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E FAIRPORT NY
2011-05-03 631-438 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E PATCHOGUE NY
2011-05-03 646-532 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN01 NY
2011-05-03 801-600 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-03 801-800 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PROVO UT
2011-05-03 805-364 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SANBARBARA CA
2011-05-03 818-839 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E GLENDALE CA
2011-05-03 818-869 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFN PACM CA
2011-05-03 973-936 0–9 XXXall 10 · 4 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 MORRISTOWN NJ
2011-05-02 224-227 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2011-05-02 516-415 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN06 NY
2011-05-02 567-400 0–9 XXXall 10 · 6 holders which blocks → AMERICAN BROADBAND AND TELECOMMS COMPANY - OH 509B GENOA OH
2011-05-02 647-756 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 647-757 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 647-758 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 647-759 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 647-821 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 647-823 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 647-824 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 647-825 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2011-05-02 708-368 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-02 708-378 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-02 708-800 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-02 872-800 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-04-29 231-433 1XXX3XXX4XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MOORESTOWN MI
2011-04-29 813-898 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2011-04-29 843-898 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 WALTERBORO SC
2011-04-29 910-782 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J WILMINGTON NC
2011-04-29 980-729 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLOTTE NC
2011-04-28 319-486 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 WATERLOO IA
2011-04-28 415-857 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2011-04-28 470-238 0–9 XXXall 10 · 7 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BUFORD GA
2011-04-28 510-255 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RICHMOND CA
2011-04-28 681-328 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 WEIRTON WV
2011-04-28 754-400 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E HOLLYWOOD FL
2011-04-28 862-437 0–9 XXXall 10 · 9 holders which blocks → CSC VOICE, LLC 612K DOVER NJ
2011-04-28 910-304 0–9 XXXall 10 · 6 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 DUNN NC
2011-04-28 928-258 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 AGUILA AZ
2011-04-28 980-348 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLOTTE NC
2011-04-28 980-643 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SALISBURY NC
2011-04-28 980-949 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLOTTE NC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.