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
2022-12-14 220-243 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATHENS OH
2022-12-06 220-242 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
2022-11-16 220-241 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ZANESVILLE OH
2022-11-02 220-239 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C MARION OH
2022-11-02 220-240 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C CHESAPEAKE OH
2022-11-02 220-324 2XXX3XXX4XXX · 2 holders which blocks → ONVOY, LLC - OH 464C NEWMRSHFLD OH
2022-11-02 220-740 0XXX1XXX7XXX · 2 holders which blocks → ONVOY, LLC - OH 464C LOWERSALEM OH
2022-10-03 220-238 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PATASKALA OH
2022-09-14 220-237 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C WELLSTON OH
2022-08-24 220-678 0XXX1XXX8XXX9XXX · 3 holders which blocks → AT&T - LOCAL 7421 SOMERSET OH
2022-08-23 220-236 0XXX which blocks → ONVOY SPECTRUM, LLC 624H CHESTER OH
2022-08-10 220-235 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ZANESVILLE OH
2022-08-09 220-232 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ATHENS OH
2022-08-09 220-233 0XXX3XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J RESACA OH
2022-07-19 220-231 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 JOHNSTOWN OH
2022-06-27 220-229 1XXX5XXX9XXX · 3 holders which blocks → CSC VOICE, LLC 612K CHESTERHL OH
2022-05-20 220-228 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PATASKALA OH
2022-04-14 220-227 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATHENS OH
2022-02-28 220-225 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F BELPRE OH
2022-02-23 220-224 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ATHENS OH
2022-01-28 220-216 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LANCASTER OH
2022-01-11 220-223 0–9 XXXall 10 · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CHESHIRCTR OH
2022-01-04 220-219 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PATASKALA OH
2021-12-15 220-218 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATHENS OH
2021-11-16 220-901 9XXX which blocks → ONVOY SPECTRUM, LLC 624H GUYSVILLE OH
2021-11-16 220-902 2XXX8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BARLOW OH
2021-08-12 220-215 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F IRONTON OH
2021-08-03 220-345 0XXX2XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H LETART FLS OH
2021-06-22 220-214 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - OH 464C DANVL OH
2021-06-18 220-213 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F AMANDA OH
2021-06-15 220-577 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ZANESVILLE OH
2021-06-15 220-677 0XXX3XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H WILLIAMSPT OH
2021-06-15 220-877 4XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H PROSPECT OH
2021-06-14 220-299 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NEWCOMRSTN OH
2021-06-14 220-399 0XXX1XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NELSONVL OH
2021-06-14 220-788 0XXX1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H NEWHOLLAND OH
2021-06-14 220-977 0XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PLEASANTVL OH
2021-06-11 220-348 0XXX2XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H ADAMSVILLE OH
2021-06-11 220-386 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHESAPEAKE OH
2021-06-11 220-432 0XXX1XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H FULTONHAM OH
2021-06-11 220-499 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MARIETTA OH
2021-06-11 220-599 0XXX1XXX5XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H LAURELVL OH
2021-06-11 220-667 0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BARNESVL OH
2021-06-11 220-699 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H IDAHO OH
2021-06-11 220-732 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ATHENS OH
2021-06-11 220-786 0XXX1XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H CROOKSVL OH
2021-06-11 220-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H GUYAN OH
2021-06-11 220-899 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GRAYSVILLE OH
2021-06-11 220-946 0XXX1XXX3XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H COOPERDALE OH
2021-05-07 220-212 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H PATASKALA 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.