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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2013-10-22 515-808 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 INDIANOLA IA
2013-10-22 587-478 not yet reported which blocks → TELUS 8084 Anzac —
2013-10-22 609-907 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN NJ
2013-10-21 505-218 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2013-10-21 540-773 0–9 XXXall 10 · 7 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - VA 4979 WINCHESTER VA
2013-10-21 573-409 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 HERMANN MO
2013-10-21 619-363 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNDG SNDG CA
2013-10-21 650-285 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PALO ALTO CA
2013-10-21 856-804 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 PORTNORRIS NJ
2013-10-18 204-400 not yet reported which blocks → Iristel Inc. 154E Portage La Prairie —
2013-10-18 219-703 0–9 XXXwhole prefix which blocks → INDIANA BELL TEL CO INC 9325 E CHICAGO IN
2013-10-18 226-894 not yet reported which blocks → Iristel Inc. 154E Galt —
2013-10-18 252-319 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MURFREESBO NC
2013-10-18 306-400 not yet reported which blocks → Iristel Inc. 154E Biggar —
2013-10-18 579-700 not yet reported which blocks → Iristel Inc. 154E St-Jean —
2013-10-18 587-600 not yet reported which blocks → Iristel Inc. 154E Airdrie —
2013-10-18 606-268 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - KY 987E JELLICO KY
2013-10-18 612-707 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2013-10-18 619-451 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 CHULAVISTA CA
2013-10-18 657-232 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SANTA ANA CA
2013-10-18 754-703 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2013-10-18 763-703 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2013-10-18 808-720 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - HI 9414 LIHUE HI
2013-10-18 954-909 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2013-10-18 954-947 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2013-10-18 956-703 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2013-10-18 970-889 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 FT COLLINS CO
2013-10-18 984-202 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J RALEIGH NC
2013-10-17 201-932 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2013-10-17 236-888 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2013-10-17 438-600 not yet reported which blocks → Iristel Inc. 154E Lachine —
2013-10-17 469-703 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 FORNEY TX
2013-10-17 579-300 not yet reported which blocks → Iristel Inc. 154E Pont-Viau —
2013-10-17 587-479 not yet reported which blocks → TELUS 8084 Peace River —
2013-10-17 619-836 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2013-10-17 781-513 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 LYNN MA
2013-10-17 781-805 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 RANDOLPH MA
2013-10-17 818-852 0–9 XXXall 10 · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C AGOURA CA
2013-10-17 971-704 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF OREGON, LLC - OR 157F ASTORIA OR
2013-10-16 224-281 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ELGIN IL
2013-10-16 385-216 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-10-16 413-317 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
2013-10-16 708-971 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ORLAND IL
2013-10-16 929-255 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN11 NY
2013-10-15 204-560 not yet reported which blocks → Shaw Telecom Inc. 497E Winnipeg —
2013-10-15 289-458 not yet reported which blocks → TELUS Integrated Communications 2782 Campbellville —
2013-10-15 587-391 not yet reported which blocks → Shaw Telecom Inc. 497E Calgary —
2013-10-15 587-635 not yet reported which blocks → Shaw Telecom Inc. 497E Edmonton —
2013-10-15 604-416 not yet reported which blocks → Shaw Telecom Inc. 497E Vancouver —
2013-10-15 682-401 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLINGTON TX

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.