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
2006-11-29 219-427 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J GARY IN
2006-09-19 219-595 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J HIGHLAND IN
2006-06-27 219-455 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2006-06-14 219-627 0–9 XXXall 10 · 8 holders which blocks → FBN INDIANA, INC. - IN 4117 ST JOHN IN
2006-04-25 219-654 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks → FBN INDIANA, INC. - IN 4117 LAKE STA IN
2006-02-09 219-440 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2006-01-25 219-487 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2006-01-25 219-525 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MERRILLVL IN
2005-09-01 219-707 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2005-08-31 219-747 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J WOLCOTT IN
2005-05-05 219-263 0–9 XXXall 10 · 5 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 VALPARAISO IN
2005-03-16 219-488 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN
2005-03-02 219-750 0–9 XXXall 10 · 3 holders which blocks → MIDWEST TELECOM OF AMERICA, INC. - IN 919A MERRILLVL IN
2004-08-10 219-728 0–9 XXXall 10 · 6 holders which blocks → ACME COMMUNICATIONS, INC. - IN 9303 CHESTERTON IN
2004-04-07 219-224 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BROOK IN
2004-03-29 219-484 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2004-03-15 219-472 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MERRILLVL IN
2004-03-09 219-220 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FBN INDIANA, INC. - IN 4117 REYNOLDS IN
2004-03-09 219-330 0XXX3XXX · 2 holders which blocks → FBN INDIANA, INC. - IN 4117 SAN PIERRE IN
2004-03-09 219-335 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FBN INDIANA, INC. - IN 4117 FRANCESVL IN
2004-02-23 219-202 0–9 XXXall 10 · 7 holders which blocks → FBN INDIANA, INC. - IN 4117 WHEATFIELD IN
2004-02-06 219-233 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → FBN INDIANA, INC. - IN 4117 GOODLAND IN
2004-02-06 219-234 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → FBN INDIANA, INC. - IN 4117 KENTLAND IN
2004-02-06 219-235 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FBN INDIANA, INC. - IN 4117 BROOK IN
2004-02-06 219-236 not yet reported which blocks → FBN INDIANA, INC. - IN 4117 WOLCOTT IN
2003-06-04 219-221 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 MICHIGANCY IN
2003-05-21 219-210 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2003-05-02 219-223 3XXX8XXX · 2 holders which blocks → FBN INDIANA, INC. - IN 4117 MOUNT AYR IN
2003-04-21 219-913 not yet reported which blocks → INDIANA PAGING NETWORK, INC. 6795 WHEATFIELD IN
2003-01-21 219-227 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2002-12-17 219-809 0–9 XXXall 10 · 7 holders which blocks → ACME COMMUNICATIONS, INC. - IN 9303 MICHIGANCY IN
2002-09-06 219-229 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MICHIGANCY IN
2002-07-25 219-204 3XXX5XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 FRANCESVL IN
2002-07-25 219-207 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 REYNOLDS IN
2002-07-25 219-208 3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 REMINGTON IN
2002-07-24 219-816 6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SAN PIERRE IN
2002-06-26 219-380 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 LA PORTE IN
2002-06-25 219-507 7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WHEATFIELD IN
2002-06-25 219-915 1XXX2XXX4XXX5XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 REMINGTON IN
2002-06-19 219-916 2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 VALPARAISO IN
2002-06-06 219-228 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMMOND IN
2002-06-04 219-990 1XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 REMINGTON IN
2002-05-13 219-508 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2002-05-10 219-270 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FBN INDIANA, INC. - IN 4117 DEMOTTE IN
2002-05-10 219-964 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 RENSSELAER IN
2002-04-30 219-306 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CROWNPOINT IN
2002-04-30 219-608 2XXX3XXX · 2 holders which blocks → METROPCS, INC. 5562 LA PORTE IN
2002-04-16 219-354 0–9 XXXall 10 · 7 holders which blocks → FIRST COMMUNICATIONS, LLC 460K E CHICAGO IN
2002-04-16 219-390 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CEDAR LAKE IN
2002-04-11 219-313 none assigned yet which blocks → T-MOBILE USA, INC. 6529 GARY 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.