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
2014-06-18 219-303 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 CEDAR LAKE IN
2014-06-11 219-401 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CEDAR LAKE IN
2014-04-11 219-320 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 WHITING IN
2014-04-11 219-704 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 DYER IN
2014-04-10 219-304 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WESTVILLE IN
2014-03-05 219-281 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 CROWNPOINT IN
2014-03-03 219-318 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2013-10-18 219-703 0–9 XXXwhole prefix which blocks → INDIANA BELL TEL CO INC 9325 E CHICAGO IN
2013-06-13 219-702 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2013-06-04 219-802 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HAMMOND IN
2013-06-04 219-804 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J E CHICAGO IN
2013-05-28 219-315 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 E CHICAGO IN
2013-05-28 219-316 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 E CHICAGO IN
2013-01-17 219-323 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 CROWNPOINT IN
2012-10-10 219-307 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2012-10-01 219-321 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2012-09-21 219-302 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GARY IN
2012-07-27 219-276 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 E CHICAGO IN
2012-05-15 219-240 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2012-03-06 219-267 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CEDAR LAKE IN
2012-02-27 219-214 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2012-02-15 219-239 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2012-02-07 219-212 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MEDARYVL IN
2012-02-07 219-215 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAKE VLG IN
2012-01-23 219-515 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J DYER IN
2011-10-14 219-203 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J WHEELER IN
2011-08-22 219-213 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CROWNPOINT IN
2011-06-10 219-237 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F HIGHLAND IN
2011-03-10 219-344 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LA PORTE IN
2011-02-17 219-200 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GARY IN
2010-10-12 219-225 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J LOWELL IN
2010-08-20 219-370 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F WHITING IN
2010-08-18 219-424 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 RENSSELAER IN
2010-08-11 219-413 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F E CHICAGO IN
2010-06-16 219-286 0–9 XXXall 10 · 6 holders which blocks → MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F VALPARAISO IN
2010-06-16 219-585 0–9 XXXall 10 · 3 holders which blocks → MCC TELEPHONY OF THE MID-WEST, LLC - IN 874F WESTVILLE IN
2010-06-11 219-296 1XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEATFIELD IN
2009-12-23 219-262 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 MICHIGANCY IN
2009-02-06 219-840 4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 PORTAGE IN
2008-11-18 219-252 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2008-11-12 219-290 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GARY IN
2008-11-12 219-292 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GARY IN
2008-11-12 219-293 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GARY IN
2008-11-05 219-299 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VALPARAISO IN
2008-10-06 219-359 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2008-08-29 219-250 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 CHESTERTON IN
2007-10-30 219-246 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2007-02-28 219-850 0–9 XXXall 10 · 5 holders which blocks → MIDWEST TELECOM OF AMERICA, INC. - IN 919A PORTAGE IN
2007-02-21 219-433 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 GARY IN
2007-02-20 219-256 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 E CHICAGO 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.