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 567
FRACTEL, LLC 29
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
2021-10-25 567-500 0XXX1XXX2XXX5XXX · 4 holders which blocks → FRACTEL, LLC 965H ATTICA OH
2021-06-09 567-499 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H ELIDA OH
2021-04-16 567-799 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DUNKIRK OH
2021-04-15 567-388 0XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BLUFFTON OH
2021-04-15 567-566 0XXX1XXX2XXX5XXX6XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BEAVERDAM OH
2021-04-15 567-577 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H ADARIO OH
2021-04-15 567-588 0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H ADA OH
2021-04-15 567-599 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H GENOA OH
2021-04-15 567-688 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H CHESTERFLD OH
2021-04-15 567-699 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ASHLAND OH
2020-09-08 567-758 0XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H FREMONT OH
2020-09-08 567-786 2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H REDHAW OH
2020-09-08 567-842 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H LAKEVILLE OH
2020-07-08 567-732 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H ELMORE OH
2020-07-08 567-788 0XXX4XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H MARIASTEIN OH
2020-07-08 567-896 0XXX2XXX6XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H PUT IN BAY OH
2020-07-08 567-946 3XXX4XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H CRIDERSVL OH
2020-02-14 567-362 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H BETTSVILLE OH
2020-02-14 567-465 0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H BLOOMVILLE OH
2020-02-14 567-529 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EDGERTON OH
2020-02-14 567-833 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SYLVANIA OH
2020-02-14 567-866 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H KELLEYS IS OH
2020-02-14 567-877 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H HURON OH
2020-02-14 567-891 0XXX1XXX · 2 holders which blocks → FRACTEL, LLC 965H SWANTON OH
2020-02-14 567-895 0XXX2XXX3XXX5XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SAVANNAH OH
2020-02-14 567-898 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PERRYSBURG OH
2019-01-25 567-816 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H LINDSEY OH
2019-01-25 567-899 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ASHLAND OH
2019-01-25 567-900 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TOLEDO OH

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.