NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2020-12-10 873-955 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Maniwaki —
2020-12-10 939-407 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2020-12-10 947-229 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2020-12-10 980-358 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CONCORD NC
2020-12-09 213-789 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 02 CA
2020-12-09 220-204 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BALTIMORE OH
2020-12-09 318-753 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ALEXANDRIA LA
2020-12-09 332-239 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J NWYRCYZN01 NY
2020-12-09 332-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN01 NY
2020-12-09 352-679 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BROOKSVL FL
2020-12-09 437-280 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-09 437-633 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-09 438-413 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-09 438-560 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-09 442-344 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-12-09 479-449 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AR 348F RUSSELLVL AR
2020-12-09 559-604 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 562-527 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2020-12-09 619-769 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2020-12-09 623-269 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J PHOENIX AZ
2020-12-09 641-281 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → STRATUS NETWORKS 495J CHARLES CY IA
2020-12-09 659-214 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → HARGRAY OF ALABAMA, INC. - AL 432J PELL CITY AL
2020-12-09 667-297 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 EDGEWOOD MD
2020-12-09 680-234 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H AUBURN NY
2020-12-09 707-767 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-12-09 712-398 1XXX8XXX9XXX · 3 holders which blocks → STRATUS NETWORKS 495J ONAWA IA
2020-12-09 774-477 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 WHITINSVL MA
2020-12-09 803-961 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2020-12-09 909-928 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2020-12-09 951-560 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2020-12-08 213-731 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C MONTEBELLO CA
2020-12-08 234-699 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WARREN OH
2020-12-08 234-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WOOSTER OH
2020-12-08 249-733 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Barrie —
2020-12-08 254-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C WACO TX
2020-12-08 313-480 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 DETROITZN5 MI
2020-12-08 314-784 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MO 093F MEHLVILLE MO
2020-12-08 321-399 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H COCOABEACH FL
2020-12-08 325-310 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C ABILENE TX
2020-12-08 325-610 0XXX2XXX3XXX4XXX6XXX which blocks → ONVOY, LLC - TX 903C SAN ANGELO TX
2020-12-08 361-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C C CHRISTI TX
2020-12-08 409-410 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C BEAUMONT TX
2020-12-08 430-810 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C LONGVIEW TX
2020-12-08 432-410 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C MIDLAND TX
2020-12-08 437-279 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-08 437-632 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-08 438-412 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-08 438-489 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-08 480-741 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 478J PHOENIX AZ
2020-12-08 520-535 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.