NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 220
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 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
2021-04-16 220-209 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 STEUBENVL OH
2021-04-15 220-207 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LANCASTER OH
2021-04-15 220-208 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
2021-04-02 220-221 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C MARION OH
2021-03-31 220-206 0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C THE PLAINS OH
2021-03-30 220-210 0XXX1XXX7XXX · 3 holders which blocks → ONVOY, LLC - OH 464C NEWCONCORD OH
2021-02-09 220-837 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHILLICOTH OH
2021-01-19 220-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MILLERSPT OH
2021-01-06 220-272 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C CROTON OH
2021-01-06 220-440 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C FRAZEYSBG OH
2020-12-09 220-204 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BALTIMORE OH
2020-07-01 220-300 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H WILKESVL OH
2020-06-30 220-600 0XXX1XXX6XXX which blocks → FRACTEL, LLC 965H SCIO OH
2020-02-12 220-234 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MARTISFRRY OH
2020-02-12 220-356 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BYESVILLE OH
2020-02-12 220-400 0XXX1XXX2XXX4XXX · 2 holders which blocks → FRACTEL, LLC 965H CHESTERHL OH
2020-02-12 220-465 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H PATASKALA OH
2020-02-12 220-529 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H OLDWSHNGTN OH
2020-02-12 220-758 0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H REINELHKNY OH
2020-02-12 220-766 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H WALNUT OH
2020-02-12 220-842 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WELLSTON OH
2020-02-11 220-220 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ALEXANDRIA OH
2020-02-11 220-226 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H AMANDA OH
2019-10-08 220-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H PORTSMOUTH OH
2019-05-08 220-900 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SUGARGROVE OH
2019-03-25 220-203 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F ZANESVILLE OH
2019-01-25 220-800 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WLAFAYETTE OH
2018-12-21 220-777 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J COSHOCTON OH
2018-01-26 220-202 0XXX2XXX5XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TILTONSVL OH
2017-10-06 220-666 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C BALTIMORE OH
2017-09-15 220-444 0XXX1XXX2XXX4XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C MINGO JCT OH
2017-09-15 220-999 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - OH 464C NEWPORT OH
2017-09-01 220-333 0XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLC - OH 464C ROSEVILLE OH
2017-09-01 220-888 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C RUSHVILLE OH
2017-08-30 220-222 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C ROSEVILLE OH
2016-03-22 220-270 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C CROTON OH
2016-03-17 220-200 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C FRAZEYSBG OH
2015-11-19 220-564 0–9 XXXwhole prefix which blocks → WINDSTREAM OHIO, LLC 0665 NEWARK OH
2015-04-13 220-201 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 ZANESVILLE OH
— 220-205 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H KILBOURNE OH
— 220-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 220-217 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SUNBURY OH
— 220-230 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J THORNVILLE OH
— 220-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 220-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 220-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 220-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST OH
— 220-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 220-700 not yet reported which blocks → OH
— 220-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.