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 681
FRACTEL, LLC 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
2021-09-09 681-465 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ELKINS WV
2020-08-07 681-336 2XXX8XXX · 2 holders which blocks → FRACTEL, LLC 965H SMITHVILLE WV
2020-08-07 681-346 0XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H MASON WV
2020-08-07 681-899 2XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H ROCKPORT WV
2020-08-07 681-946 0XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H IAEGER WV
2020-08-07 681-966 2XXX6XXX · 2 holders which blocks → FRACTEL, LLC 965H LAWFORD WV
2019-10-24 681-226 0XXX1XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H WHELNGZON2 WV
2019-10-24 681-348 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WEIRTON WV
2019-09-20 681-316 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BURNSVILLE WV
2019-09-20 681-516 0XXX1XXX2XXX5XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GAULEY BDG WV
2019-09-20 681-687 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H HNTNGTNZN2 WV
2019-09-20 681-716 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CRAIGSVL WV
2019-09-20 681-732 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → FRACTEL, LLC 965H HELEN WV
2019-09-20 681-916 2XXX5XXX6XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H EAST LYNN WV
2019-08-12 681-500 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H HNTNGTNZN4 WV
2019-08-12 681-529 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H HNTNGTNZN1 WV
2019-08-12 681-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BECKLEY WV
2019-08-12 681-777 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CHRLSTNZN5 WV
2019-05-23 681-688 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WEST UNION WV
2019-04-09 681-333 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CHEAT LAKE WV

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.