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 463
FRACTEL, LLC 17
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
2021-05-20 463-348 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H BROWNSBURG IN
2021-05-20 463-356 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CLAYTON IN
2021-05-20 463-766 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H SHELBYVL IN
2020-10-08 463-247 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H MARIETTA IN
2020-10-07 463-724 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H FRANKLIN IN
2020-10-07 463-732 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H CHARLOTSVL IN
2020-10-07 463-946 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WHITESTOWN IN
2020-09-08 463-529 1XXX2XXX3XXX4XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H TRAFALGAR IN
2020-09-08 463-842 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WHITELAND IN
2020-08-28 463-336 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIANAPLS IN
2020-08-25 463-345 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CARMEL IN
2020-08-25 463-500 0XXX1XXX2XXX3XXX5XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H NINEVEH IN
2020-03-05 463-300 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H GREENWOOD IN
2020-03-05 463-465 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NEWPALSTIN IN
2019-06-04 463-600 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FAIRLAND IN
2019-03-14 463-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OAKLANDON IN
2019-03-14 463-900 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIANAPLS 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.