NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

3 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 219
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
ONVOY, LLC - IN 1
NEW CINGULAR WIRELESS PCS, LLC - IL 1
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
2023-06-22 219-338 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D CEDAR LAKE IN
2023-05-19 219-332 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D LOWELL IN
2023-04-27 219-328 0XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J KOUTS IN
2023-03-15 219-910 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → COMMIO, LLC 939H WHEELER IN
2023-01-03 219-329 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2022-11-01 219-269 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GARY IN
2022-09-26 219-219 0–9 XXXwhole prefix which blocks → ONVOY, LLC - IN 097D WHEELER IN
2022-03-01 219-373 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CROWNPOINT IN
2022-03-01 219-546 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GARY IN
2022-02-25 219-426 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HAMMOND IN
2022-02-25 219-466 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J E CHICAGO IN
2022-02-24 219-727 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LA PORTE IN
2022-02-24 219-993 0XXX3XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WESTVILLE IN
2022-02-22 219-298 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 E CHICAGO IN
2022-02-17 219-463 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DYER IN
2022-02-17 219-675 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HANNA IN
2022-01-07 219-837 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAKE STA IN
2021-10-26 219-295 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CROWNPOINT IN
2021-08-24 219-289 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 E CHICAGO IN
2021-07-28 219-287 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - IN 097D ROLLNGPRRI IN
2021-07-07 219-294 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D ST JOHN IN
2021-07-01 219-284 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D MICHIGANCY IN
2021-06-24 219-282 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D MOROCCO IN
2021-06-24 219-283 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D LA PORTE IN
2021-06-14 219-278 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H CHESTERTON IN
2021-05-20 219-599 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H WHITING IN
2021-05-20 219-699 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H GARY IN
2021-05-20 219-786 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H VALPARAISO IN
2021-05-10 219-277 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H PORTAGE IN
2021-05-10 219-519 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WANATAH IN
2021-04-26 219-274 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN
2021-03-25 219-273 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HIGHLAND IN
2021-02-02 219-280 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D VALPARAISO IN
2021-02-01 219-272 0XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H LAKE VLG IN
2020-10-15 219-271 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D ROLLNGPRRI IN
2020-10-14 219-266 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D LA PORTE IN
2020-10-14 219-268 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D MICHIGANCY IN
2020-08-25 219-288 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ST JOHN IN
2020-08-25 219-342 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H WESTVILLE IN
2020-08-25 219-355 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H UNIONMILLS IN
2020-08-25 219-388 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WHEELER IN
2020-08-25 219-732 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H KOUTS IN
2020-08-25 219-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HOBART IN
2020-08-25 219-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHESTERTON IN
2020-08-25 219-842 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HANNA IN
2020-08-25 219-867 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H DYER IN
2020-08-25 219-899 8XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H MONON IN
2020-08-25 219-955 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PORTAGE IN
2020-08-25 219-966 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HIGHLAND IN
2020-07-17 219-265 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VALPARAISO IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.