NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2022-02-17 970-733 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DOLORES CO
2022-02-17 970-992 0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DOVE CREEK CO
2022-02-17 984-294 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GOLDSBORO NC
2022-02-16 223-289 0–9 XXXall 10 · 2 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2022-02-16 239-426 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LEHIGHACRS FL
2022-02-16 239-686 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SNCPVISNDS FL
2022-02-16 318-826 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HOMER LA
2022-02-16 318-852 0XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GILLIAM LA
2022-02-16 318-867 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KEITHVILLE LA
2022-02-16 320-832 0XXX1XXX4XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BROWNTON MN
2022-02-16 320-865 2XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OGILVIE MN
2022-02-16 351-233 0XXX1XXX2XXX3XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ASHBURNHAM MA
2022-02-16 351-266 0XXX1XXX6XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PRINCETON MA
2022-02-16 351-426 0XXX1XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DANVERS MA
2022-02-16 361-472 0XXX1XXX3XXX7XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLARKWOOD TX
2022-02-16 409-335 0XXX1XXX3XXX5XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BURKEVILLE TX
2022-02-16 409-426 1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COLMESNEIL TX
2022-02-16 409-742 0XXX1XXX2XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SOUTHVIDOR TX
2022-02-16 412-305 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 PTGSBNZN18 PA
2022-02-16 438-597 not yet reported which blocks → Bell Mobility 6574 Montreal —
2022-02-16 440-874 1XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COLEBROOK OH
2022-02-16 440-927 1XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NOBLOOMFLD OH
2022-02-16 445-239 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN3 PA
2022-02-16 445-249 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN4 PA
2022-02-16 507-883 3XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GREEN ISLE MN
2022-02-16 507-996 6XXX7XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LE CENTER MN
2022-02-16 509-564 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2022-02-16 571-547 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2022-02-16 571-591 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2022-02-16 651-742 0XXX1XXX2XXX6XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RED WING MN
2022-02-16 672-531 not yet reported which blocks → TELUS 8086 Abbotsford —
2022-02-16 712-952 2XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 OTO IA
2022-02-16 774-622 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HOLDEN MA
2022-02-16 820-209 0XXX7XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E GAVIOTA CA
2022-02-16 830-568 3XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KINGSBURY TX
2022-02-16 830-744 4XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J D HANIS TX
2022-02-16 830-942 0XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HARPER TX
2022-02-16 863-373 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LABELLE FL
2022-02-16 904-942 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FERNADNBCH FL
2022-02-16 906-895 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J MARQUETTE MI
2022-02-16 928-624 5XXX which blocks → TON80 COMMUNICATIONS, LLC 516J QUARTZSITE AZ
2022-02-16 928-625 0XXX5XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PARKER DAM AZ
2022-02-16 928-743 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J BOUSE AZ
2022-02-16 928-876 0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J EHRENBERG AZ
2022-02-16 939-348 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SANTURCEES PR
2022-02-16 940-746 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HENRIETTA TX
2022-02-16 941-646 0–9 XXXall 10 · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PUNTAGORDA FL
2022-02-16 949-848 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LAGUNA BCH CA
2022-02-15 318-806 0XXX1XXX4XXX · 3 holders which blocks → CSC VOICE, LLC 612K RINGGOLD LA
2022-02-15 325-324 0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J BALLINGER TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.