NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

2 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 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
2010-04-06 234-207 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CANTON OH
2010-04-02 234-249 0–9 XXXall 10 · 4 holders which blocks → SUPER-NET, INC. - OH 155F WOOSTER OH
2010-03-25 234-206 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C AKRON OH
2010-03-23 234-284 0–9 XXXall 10 · 7 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 HUDSON OH
2010-03-05 234-348 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MASSILLON OH
2009-09-04 234-564 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALEM OH
2009-03-23 234-521 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 CANTON OH
2009-01-13 234-788 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
2008-05-13 234-738 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F AKRON OH
2008-03-25 234-562 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E NO BENTON OH
2007-12-21 234-525 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OH 464C AKRON OH
2007-08-03 234-635 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K KILLBUCK OH
2007-08-02 234-595 1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K GLENMONT OH
2007-07-18 234-437 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K STERLING OH
2007-07-18 234-657 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NASHVILLE OH
2007-02-13 234-567 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SALEM OH
2006-11-16 234-678 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K AKRON OH
2004-06-02 234-421 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 GIRARD OH
2002-04-24 234-294 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → T-MOBILE USA, INC. 6529 GREENSBURG OH
2002-04-15 234-466 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MONTROSE OH
2002-03-20 234-244 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 CORTLAND OH
2002-03-20 234-248 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 SHARON CTR OH
2002-03-20 234-369 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MANCHESTR OH
2002-03-20 234-380 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 HUDSON OH
2002-03-20 234-650 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MASSILLON OH
2002-03-20 234-759 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 NORTH LIMA OH
2001-12-20 234-517 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELIVERPOOL OH
2001-06-06 234-310 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → AT&T - LOCAL 7421 GREENSBURG OH
— 234-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 234-256 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C HUBBARD OH
— 234-260 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H AKRON OH
— 234-285 0–9 XXXall 10 · 5 holders which blocks → TWILIO INTERNATIONAL, INC. 506J AKRON OH
— 234-289 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MASSILLON OH
— 234-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 234-322 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CANTON OH
— 234-335 0–9 XXXall 10 · 7 holders which blocks → TERRA NOVA TELECOM INC. 145J LISBON OH
— 234-339 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C GIRARD OH
— 234-344 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H HUDSON OH
— 234-364 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 732J CANTON OH
— 234-376 0–9 XXXall 10 · 4 holders which blocks → FIRST COMMUNICATIONS, LLC 460K AKRON OH
— 234-397 0XXX1XXX2XXX9XXX · 4 holders which blocks → FIRST COMMUNICATIONS, LLC 460K NILES OH
— 234-407 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → TELNYX LLC 073H NAVARRE OH
— 234-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 234-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 234-542 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AKRON OH
— 234-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST OH
— 234-601 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 WESTFLDCTR OH
— 234-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 234-700 not yet reported which blocks → OH
— 234-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX 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.