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
FRACTEL, LLC 21
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
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
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
2020-05-06 219-529 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
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
2019-03-15 219-348 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

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.