NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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, all time — NPA 219
FBN INDIANA, INC. - IN 20
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
2006-06-14 219-627 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
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
2003-05-02 219-223 3XXX8XXX · 2 holders which blocks → FBN INDIANA, INC. - IN 4117 MOUNT AYR IN
2002-05-10 219-270 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FBN INDIANA, INC. - IN 4117 DEMOTTE IN
2002-03-14 219-509 2XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → FBN INDIANA, INC. - IN 4117 HEBRON IN
2002-02-11 219-506 2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → FBN INDIANA, INC. - IN 4117 MOROCCO IN
2001-12-10 219-810 2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → FBN INDIANA, INC. - IN 4117 GARY IN
— 219-379 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FBN INDIANA, INC. - IN 4117 LA PORTE IN
— 219-510 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FBN INDIANA, INC. - IN 4117 VALPARAISO IN
— 219-576 2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → FBN INDIANA, INC. - IN 4117 MERRILLVL IN
— 219-577 2XXX3XXX4XXX5XXX6XXX7XXX which blocks → FBN INDIANA, INC. - IN 4117 CROWNPOINT IN
— 219-814 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FBN INDIANA, INC. - IN 4117 MICHIGANCY IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.