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
2024-02-28 234-398 0–9 XXXall 10 · 5 holders which blocks → LEAP TELECOM, LLC 616J AKRON OH
2024-02-08 234-392 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → IP HORIZON LLC 515J WOOSTER OH
2024-02-08 234-393 0XXX1XXX3XXX9XXX · 3 holders which blocks → IP HORIZON LLC 515J LOUISVILLE OH
2024-02-08 234-395 0XXX1XXX3XXX7XXX8XXX · 4 holders which blocks → IP HORIZON LLC 515J NO CANTON OH
2024-02-08 234-396 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → IP HORIZON LLC 515J LISBON OH
2024-02-05 234-390 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GIRARD OH
2024-02-05 234-391 0XXX1XXX2XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C BRUNSWICK OH
2024-01-25 234-385 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C AKRON OH
2024-01-25 234-387 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C CANTON OH
2024-01-25 234-389 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANTUA OH
2024-01-05 234-384 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C NEWPHLDLPH OH
2024-01-03 234-383 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C KENT OH
2023-11-17 234-382 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MASSILLON OH
2023-10-16 234-381 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J CANFIELD OH
2023-10-13 234-379 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANTUA OH
2023-10-05 234-378 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
2023-09-28 234-377 0–9 XXXall 10 · 5 holders which blocks → WAVENATION, LLC 700J AKRON OH
2023-09-14 234-330 1XXX2XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ROGERS OH
2023-08-30 234-374 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOOSTER OH
2023-08-17 234-225 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C ALLIANCE OH
2023-07-28 234-216 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OH 464C SALEM OH
2023-06-22 234-373 2XXX3XXX · 2 holders which blocks → ONVOY, LLC - OH 464C DAMASCUS OH
2023-04-11 234-372 2XXX3XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H CHATHAM OH
2023-04-11 234-394 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H WADSWORTH OH
2023-04-03 234-434 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H YOUNGSTOWN OH
2023-03-14 234-371 1XXX which blocks → COMCAST IP PHONE, LLC 318J CARROLLTON OH
2023-03-07 234-367 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J YOUNGSTOWN OH
2023-03-07 234-368 0–9 XXXall 10 · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J AKRON OH
2023-03-07 234-370 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → HD CARRIER LLC 321J YOUNGSTOWN OH
2023-01-23 234-365 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F MONTROSE OH
2023-01-09 234-363 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MASSILLON OH
2023-01-04 234-359 0XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 AURORA OH
2022-12-19 234-990 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H NO CANTON OH
2022-11-16 234-358 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HUDSON OH
2022-09-07 234-357 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J YOUNGSTOWN OH
2022-08-31 234-355 0XXX3XXX5XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 MARLBORO OH
2022-08-02 234-354 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MILLERSBG OH
2022-04-25 234-353 0XXX1XXX3XXX5XXX · 3 holders which blocks → CSC VOICE, LLC 612K PARIS OH
2022-04-06 234-642 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J PARIS OH
2022-03-17 234-687 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SALINEVL OH
2022-03-14 234-350 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SHARON CTR OH
2022-03-04 234-349 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J AKRON OH
2022-02-17 234-746 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ELIVERPOOL OH
2022-02-03 234-366 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 GREENSBURG OH
2022-01-28 234-683 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DALTON OH
2022-01-26 234-317 8XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J AURORA OH
2022-01-26 234-346 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J RICHFIELD OH
2022-01-13 234-646 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MANTUA OH
2022-01-13 234-663 0XXX1XXX2XXX3XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HOMERVILLE OH
2022-01-13 234-733 3XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CARROLLTON 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.