NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-12-17 435-395 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HEBER CITY UT
2018-12-17 470-530 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2018-12-17 548-887 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Woodstock —
2018-12-17 650-414 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 REDWOOD CY CA
2018-12-17 825-421 not yet reported which blocks → Shaw Telecom Inc. 497E Hinton —
2018-12-17 825-422 not yet reported which blocks → Shaw Telecom Inc. 497E Jasper —
2018-12-17 873-668 not yet reported which blocks → Videotron Ltd. 8306 Lyster —
2018-12-17 873-669 not yet reported which blocks → Videotron Ltd. 8306 Laurierville —
2018-12-17 939-444 0XXX1XXX2XXX3XXX4XXX5XXX · 6 holders which blocks → NATURAL G.C. INC. - PR 985G ROOSEVLTRD PR
2018-12-17 939-666 0XXX1XXX2XXX3XXX6XXX7XXX · 6 holders which blocks → NATURAL G.C. INC. - PR 985G SANSBSTIAN PR
2018-12-17 939-888 0XXX1XXX3XXX7XXX8XXX · 5 holders which blocks → NATURAL G.C. INC. - PR 985G LASPIEDRAS PR
2018-12-17 939-900 0–9 XXXall 10 · 3 holders which blocks → NATURAL G.C. INC. - PR 985G PONCE PR
2018-12-17 939-999 0XXX1XXX2XXX3XXX8XXX9XXX · 6 holders which blocks → NATURAL G.C. INC. - PR 985G AGUASBUNAS PR
2018-12-13 267-667 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PHLDLPHZN1 PA
2018-12-13 313-751 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN5 MI
2018-12-13 380-235 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2018-12-13 425-705 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2018-12-13 425-722 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2018-12-13 437-251 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2018-12-13 437-252 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2018-12-13 437-916 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2018-12-13 437-917 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2018-12-13 437-918 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2018-12-13 505-808 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J ALBUQURQUE NM
2018-12-13 612-422 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2018-12-13 680-210 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WATERTOWN NY
2018-12-13 713-804 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C HOUSTON TX
2018-12-13 719-490 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MONTEVISTA CO
2018-12-13 726-333 0–9 XXXall 10 · 3 holders which blocks → USFON, INC. - TX 473F SANANTONIO TX
2018-12-13 757-901 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NRFOLKZON2 VA
2018-12-13 786-665 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2018-12-13 813-553 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPANTH FL
2018-12-13 920-977 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GREEN BAY WI
2018-12-12 213-409 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 LSAN DA 01 CA
2018-12-12 236-972 not yet reported which blocks → TELUS Mobility 8301 Nelson —
2018-12-12 272-228 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J SCRANTON PA
2018-12-12 407-225 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2018-12-12 425-703 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2018-12-12 425-706 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2018-12-12 425-707 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2018-12-12 437-912 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2018-12-12 437-913 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2018-12-12 437-914 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2018-12-12 437-915 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2018-12-12 479-351 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HINDSVILLE AR
2018-12-12 551-296 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 OAKLAND NJ
2018-12-12 551-308 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RAMSEY NJ
2018-12-12 850-220 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C PACE FL
2018-12-12 970-781 2XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 RIFLE CO
2018-12-11 223-215 0–9 XXXall 10 · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 MOUNT JOY PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.