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
2013-01-14 234-333 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2013-01-14 234-904 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2013-01-11 234-713 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2013-01-11 234-773 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2012-12-31 234-281 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C AKRON OH
2012-12-21 234-301 0–9 XXXall 10 · 6 holders which blocks → HORIZON SERVICES, INC. - OH 601G MILLERSBG OH
2012-12-10 234-217 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WADSWORTH OH
2012-12-07 234-307 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F LOUISVILLE OH
2012-11-27 234-228 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G YOUNGSTOWN OH
2012-11-27 234-312 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G AKRON OH
2012-11-16 234-231 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 AKRON OH
2012-10-15 234-302 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MARLBORO OH
2012-10-15 234-305 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2012-10-15 234-314 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2012-10-15 234-316 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GREENSBURG OH
2012-07-24 234-903 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2012-07-13 234-240 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MARLBORO OH
2012-06-12 234-218 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F GARRETTSVL OH
2012-06-08 234-214 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 CANTON OH
2012-06-05 234-212 0–9 XXXall 10 · 8 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 TWINSBURG OH
2012-06-05 234-213 0XXX1XXX3XXX · 3 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 AURORA OH
2012-05-05 234-209 0–9 XXXall 10 · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NO CANTON OH
2012-04-28 234-208 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K AKRON OH
2012-04-13 234-210 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GREENSBURG OH
2012-03-12 234-205 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 AKRON OH
2012-02-15 234-203 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
2011-12-19 234-202 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2011-08-17 234-227 not yet reported which blocks → SUPER-NET, INC. - OH 155F SHREVE OH
2011-08-17 234-429 not yet reported which blocks → SUPER-NET, INC. - OH 155F SMITHVILLE OH
2011-08-17 234-916 not yet reported which blocks → SUPER-NET, INC. - OH 155F FREDECKSBG OH
2011-08-16 234-323 not yet reported which blocks → SUPER-NET, INC. - OH 155F APPLECREEK OH
2011-08-11 234-575 0–9 XXXall 10 · 9 holders which blocks → AT&T ENTERPRISES, LLC 516C SALEM OH
2011-08-05 234-223 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 WARREN OH
2011-06-13 234-222 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F DALTON OH
2011-03-17 234-522 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2011-03-17 234-800 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2011-03-01 234-265 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C SALINEVL OH
2011-01-12 234-600 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 WARREN OH
2010-12-21 234-500 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2010-12-17 234-400 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 RICHFIELD OH
2010-12-02 234-755 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C MANTUA OH
2010-10-20 234-300 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2010-10-20 234-386 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C MAGNOLWSBG OH
2010-09-17 234-414 0–9 XXXall 10 · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C CANFIELD OH
2010-08-05 234-200 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AKRON OH
2010-08-05 234-201 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN OH
2010-06-23 234-352 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J AKRON OH
2010-06-14 234-221 0–9 XXXall 10 · 9 holders which blocks → SUPER-NET, INC. - OH 155F NAVARRE OH
2010-05-07 234-475 0–9 XXXwhole prefix which blocks → OHIO BELL TEL CO 9321 AKRON OH
2010-04-29 234-220 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CORTLAND 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.