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
2014-06-19 234-979 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MARLBORO OH
2014-05-20 234-309 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2014-05-20 234-325 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2014-05-14 234-319 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBURG OH
2014-05-14 234-404 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ROOTSTOWN OH
2014-05-14 234-978 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HARTVILLE OH
2014-05-14 234-980 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MARLBORO OH
2014-04-30 234-276 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F GREENSBURG OH
2014-04-09 234-239 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F CHATHAM OH
2014-04-09 234-351 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F BALTIC OH
2014-04-09 234-402 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F VALLEYCITY OH
2014-04-09 234-732 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F BOLIVAR OH
2014-04-04 234-320 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F SALEM OH
2014-04-02 234-770 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F MANCHESTR OH
2014-03-20 234-707 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AURORA OH
2014-01-20 234-254 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F YOUNGSTOWN OH
2014-01-16 234-706 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J AKRON OH
2014-01-08 234-262 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 NO CANTON OH
2014-01-03 234-703 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 RAVENNA OH
2013-11-27 234-701 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 SUGARCREEK OH
2013-11-18 234-428 0XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEWTON FLS OH
2013-11-12 234-242 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2013-11-01 234-704 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C NORTHFIELD OH
2013-09-20 234-817 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 AKRON OH
2013-09-05 234-702 0XXX1XXX2XXX3XXX4XXX5XXX which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F AURORA OH
2013-08-21 234-815 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F AKRON OH
2013-08-05 234-253 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 SEBRING OH
2013-07-26 234-308 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WARREN OH
2013-07-10 234-303 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 AKRON OH
2013-07-01 234-204 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HOLMESVL OH
2013-06-18 234-229 0–9 XXXall 10 · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MANCHESTR OH
2013-06-18 234-252 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LOUISVILLE OH
2013-06-18 234-813 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MOGADORE OH
2013-06-14 234-804 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 CANTON OH
2013-06-03 234-801 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NEWPHLDLPH OH
2013-06-03 234-802 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MEDINA OH
2013-06-03 234-805 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LOWELLVL OH
2013-06-03 234-806 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WARREN OH
2013-06-03 234-808 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NORTHFIELD OH
2013-05-22 234-571 0–9 XXXall 10 · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K AKRON OH
2013-04-23 234-246 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J RICHFIELD OH
2013-04-22 234-803 0–9 XXXall 10 · 7 holders which blocks → SIGECOM, LLC DBA WOW INTERNET CABLE AND PHONE 735E BRUNSWICK OH
2013-02-01 234-251 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K UNIONTOWN OH
2013-01-23 234-401 0–9 XXXall 10 · 6 holders which blocks → FIRST COMMUNICATIONS, LLC 460K NO CANTON OH
2013-01-17 234-315 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2013-01-17 234-318 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2013-01-17 234-321 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GREENSBURG OH
2013-01-17 234-331 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MARLBORO OH
2013-01-17 234-337 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CORTLAND OH
2013-01-17 234-361 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GREENSBURG 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.