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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2020-05-06 219-529 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H HAMMOND IN
2020-05-06 219-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LAKE STA IN
2020-03-06 219-264 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMMOND IN
2020-02-10 219-259 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F MICHIGANCY IN
2019-10-17 219-587 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CEDAR LAKE IN
2019-10-17 219-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MERRILLVL IN
2019-09-30 219-327 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D LOWELL IN
2019-09-30 219-419 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D WANATAH IN
2019-09-30 219-912 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D LAKE VLG IN
2019-03-15 219-348 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H WHITING IN
2019-03-15 219-356 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CROWNPOINT IN
2019-02-20 219-312 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D VALPARAISO IN
2018-10-18 219-257 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CROWNPOINT IN
2018-09-21 219-291 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D ROLLNGPRRI IN
2018-03-30 219-255 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CHESTERTON IN
2018-03-08 219-248 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H PORTAGE IN
2017-12-21 219-533 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D HIGHLAND IN
2017-09-14 219-245 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 WHEELER IN
2017-09-14 219-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D MERRILLVL IN
2017-09-14 219-666 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D HAMMOND IN
2017-08-31 219-900 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D CROWNPOINT IN
2017-07-10 219-247 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 CEDAR LAKE IN
2017-07-07 219-244 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 LAKE STA IN
2017-06-01 219-216 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 VALPARAISO IN
2017-06-01 219-217 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 WESTVILLE IN
2017-04-25 219-800 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D E CHICAGO IN
2017-04-17 219-443 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 CEDAR LAKE IN
2017-04-17 219-491 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 DYER IN
2016-05-18 219-407 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 HAMMOND IN
2016-03-07 219-336 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D MICHIGANCY IN
2015-11-20 219-444 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D MERRILLVL IN
2015-10-15 219-400 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F HOBART IN
2015-10-06 219-402 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F LA PORTE IN
2015-09-22 219-516 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 E CHICAGO IN
2015-08-31 219-334 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CROWNPOINT IN
2015-08-18 219-600 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D WHITING IN
2015-08-17 219-333 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D CROWNPOINT IN
2015-08-17 219-777 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D GARY IN
2015-07-16 219-615 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J VALPARAISO IN
2015-06-12 219-806 0–9 XXXall 10 · 8 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2015-04-09 219-319 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 DYER IN
2015-03-27 219-300 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J LOWELL IN
2015-02-24 219-999 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D GARY IN
2015-01-28 219-351 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F ST JOHN IN
2015-01-12 219-501 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C HAMMOND IN
2014-10-23 219-706 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F PORTAGE IN
2014-10-15 219-386 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VALPARAISO IN
2014-07-08 219-301 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C HIGHLAND IN
2014-07-02 219-231 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 PORTAGE IN
2014-07-02 219-243 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 MICHIGANCY 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.