NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

2 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 234
8X8, INC. 2
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
2020-10-06 234-288 0–9 XXXall 10 · 5 holders which blocks → IP HORIZON LLC 515J AKRON OH
2020-09-30 234-286 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 WOOSTER OH
2020-09-11 234-283 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 WARREN OH
2020-09-08 234-282 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 KENT OH
2020-09-08 234-966 3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H JOHNSTON OH
2020-09-01 234-280 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J AKRON OH
2020-08-04 234-279 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J AKRON OH
2020-07-08 234-565 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SHARON CTR OH
2020-07-02 234-336 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H EPALESTINE OH
2020-06-16 234-356 3XXX4XXX7XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H BRISTOLVL OH
2020-06-05 234-275 0–9 XXXall 10 · 2 holders which blocks → CSC WIRELESS, LLC 425J YOUNGSTOWN OH
2020-05-28 234-299 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BURBANK OH
2020-05-28 234-332 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C LODI OH
2020-05-28 234-540 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLC - OH 464C KINSMAN OH
2020-05-26 234-278 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C HINCKLEY OH
2020-05-26 234-290 0XXX1XXX2XXX3XXX5XXX · 2 holders which blocks → ONVOY, LLC - OH 464C WINDHAM OH
2020-05-20 234-274 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J AKRON OH
2020-05-11 234-272 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F ROGERS OH
2020-05-11 234-273 0XXX1XXX2XXX3XXX5XXX6XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F LEETONIA OH
2020-04-21 234-271 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 9557 AKRON OH
2020-04-13 234-270 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F UNIONTOWN OH
2020-02-24 234-324 0XXX1XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C BEACH CITY OH
2020-02-21 234-269 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HUDSON OH
2020-02-19 234-268 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C ALLIANCE OH
2020-02-14 234-544 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H RAVENNA OH
2020-02-14 234-566 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H MOGADORE OH
2020-02-14 234-599 0XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H STRASBURG OH
2020-02-14 234-688 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H WINONA OH
2020-02-14 234-758 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H BREWSTER OH
2020-02-12 234-277 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ALLIANCE OH
2020-01-16 234-267 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIRAM OH
2019-10-08 234-710 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H NORTHFIELD OH
2019-09-13 234-255 0–9 XXXall 10 · 3 holders which blocks → EXIANT COMMUNICATIONS LLC 114J AKRON OH
2019-08-16 234-432 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C AURORA OH
2019-05-15 234-529 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H AKRON OH
2019-01-25 234-516 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H MANCHESTR OH
2019-01-24 234-666 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CANTON OH
2018-12-21 234-888 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J AKRON OH
2018-12-04 234-266 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F WADSWORTH OH
2018-11-13 234-264 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D YOUNGSTOWN OH
2018-11-06 234-261 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D GARRETTSVL OH
2018-10-31 234-259 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 TWINSBURG OH
2018-10-23 234-257 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MONTROSE OH
2018-09-28 234-258 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 MASSILLON OH
2018-08-27 234-250 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 AKRON OH
2018-07-17 234-247 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F SALEM OH
2018-04-26 234-245 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 PENINSULA OH
2018-03-26 234-243 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D WARREN OH
2017-12-20 234-238 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D AKRON OH
2017-11-01 234-345 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GREENSBURG 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.