NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 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, last 30 days — NPA 326
8X8, INC. 1
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
2021-06-15 326-732 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H ABERDEEN OH
2021-06-15 326-758 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H JAMESTOWN OH
2021-06-15 326-786 0XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DONNELSVL OH
2021-06-15 326-799 0XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H W LIBERTY OH
2021-06-15 326-842 2XXX3XXX5XXX6XXX · 4 holders which blocks → FRACTEL, LLC 965H CATAWBA OH
2021-06-15 326-899 0XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H WOODSTOCK OH
2021-06-15 326-946 0XXX1XXX3XXX4XXX6XXX · 5 holders which blocks → FRACTEL, LLC 965H PITCHIN OH
2021-06-09 326-336 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H VANDALIA OH
2021-06-09 326-348 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SARDINIA OH
2021-06-09 326-667 0XXX1XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H FT LORAMIE OH
2021-04-19 326-529 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CENTERVLLE OH
2021-04-06 326-210 0XXX1XXX2XXX3XXX4XXX8XXX · 2 holders which blocks → ONVOY, LLC - OH 464C RUSSELLVL OH
2021-03-25 326-201 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOUNT ORAB OH
2020-10-29 326-297 0–9 XXXwhole prefix which blocks → TON80 COMMUNICATIONS, LLC 516J BEAVERCREK OH
2020-09-08 326-356 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BELFAST OH
2020-08-14 326-697 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ENGLEWOOD OH
2020-07-28 326-234 0XXX1XXX5XXX · 3 holders which blocks → FRACTEL, LLC 965H BYHALIA OH
2020-07-28 326-345 0XXX1XXX2XXX5XXX6XXX · 5 holders which blocks → FRACTEL, LLC 965H DE GRAFF OH
2020-07-28 326-465 0XXX1XXX2XXX4XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H RIDGEWAY OH
2020-07-02 326-500 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SUGRTRERDG OH
2020-06-15 326-300 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H PEEBLES OH
2020-06-15 326-400 0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H HAMERSVL OH
2020-06-15 326-800 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BELLBROOK OH
2020-06-15 326-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H YLSPGCLFTN OH
2020-06-01 326-467 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 DAYTON OH
2020-03-23 326-236 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - OH 464C FARMERSVL OH
2020-03-23 326-266 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C RAINSBORO OH
2020-03-23 326-626 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → ONVOY, LLC - OH 464C MEDWAY OH
2020-02-07 326-200 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H MANCHESTER OH
2020-02-07 326-222 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ABERDEEN OH
2020-02-07 326-333 0XXX3XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H CAMDEN OH
2020-02-07 326-444 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H ENON OH
2020-02-07 326-600 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MARSHALL OH
2020-02-07 326-666 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H TREMONT CY OH
2020-02-07 326-777 0XXX2XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GEORGETOWN OH
2020-02-07 326-999 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WESTMILTON OH
2020-01-22 326-888 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J MECHANCSBG OH
— 326-203 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H DAYTON OH
— 326-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST OH
— 326-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-700 not yet reported which blocks → OH
— 326-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 326-950 not yet reported which blocks → OH
— 326-958 not yet reported which blocks → 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.