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
2019-05-14 909-719 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2019-05-14 910-752 0XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E HOLLYRIDGE NC
2019-05-14 940-331 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F DENTON TX
2019-05-13 229-437 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D ADEL GA
2019-05-13 231-900 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MUSKEGON MI
2019-05-13 269-800 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H KALAMAZOO MI
2019-05-13 302-493 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2019-05-13 312-779 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C CHICGOZN01 IL
2019-05-13 332-600 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H NWYRCYZN01 NY
2019-05-13 515-516 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E BLAIRSBURG IA
2019-05-13 616-300 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HUDSONVL MI
2019-05-13 626-955 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H AZUSA CA
2019-05-13 657-732 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SILVERADO CA
2019-05-13 657-758 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ANAHEIM CA
2019-05-13 657-766 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SANTA ANA CA
2019-05-13 657-877 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HUNTITNBCH CA
2019-05-13 657-977 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H WESTMINSTR CA
2019-05-13 661-786 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNCA SGCC CA
2019-05-13 661-899 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LANCASTER CA
2019-05-13 747-474 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BRBN BRBN CA
2019-05-13 747-732 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNFN SNFN CA
2019-05-13 747-744 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNFN GRHL CA
2019-05-13 747-877 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H VAN NUYS CA
2019-05-13 774-399 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E WESTBORO MA
2019-05-13 909-788 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CLAREMONT CA
2019-05-13 909-858 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CHINO CA
2019-05-13 914-688 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → FRACTEL, LLC 965H WSCHSTZN08 NY
2019-05-13 929-988 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H NWYRCYZN15 NY
2019-05-13 951-855 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TEMSCL CNY CA
2019-05-13 951-877 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H RIVERSIDE CA
2019-05-13 951-933 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PERRIS CA
2019-05-13 951-988 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H MORENO CA
2019-05-10 239-345 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BONITA SPG FL
2019-05-10 239-356 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H FTMYERSBCH FL
2019-05-10 239-758 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H IMMOKALEE FL
2019-05-10 239-766 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FORT MYERS FL
2019-05-10 276-208 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - VA 138E LAURELFORK VA
2019-05-10 309-355 1XXX5XXX · 2 holders which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F GRIDLEY IL
2019-05-10 317-779 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2019-05-10 385-339 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F AMERCNFORK UT
2019-05-10 424-429 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CMTN CMTN CA
2019-05-10 430-257 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F RICE TX
2019-05-10 430-435 0–9 XXXall 10 · 7 holders which blocks → ETEX COMMUNCATIONS, LLC DBA ETEX TELECOM - TX 3196 TYLER TX
2019-05-10 606-333 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H VIRGIE KY
2019-05-10 606-888 0XXX1XXX2XXX4XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H PINEVILLE KY
2019-05-10 689-200 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2019-05-10 689-201 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2019-05-10 689-202 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2019-05-10 689-203 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 WINTERPARK FL
2019-05-10 716-658 0–9 XXXall 10 · 3 holders which blocks → TC SYSTEMS, INC. - NY 7140 BUFFALO NY

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.