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
Clear Download CSV ↓
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 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.