NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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 380
8X8, INC. 1
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
2020-02-12 380-900 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H COLUMBUS OH
2020-01-07 380-213 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H COLUMBUS OH
2019-12-24 380-210 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLUMBUS OH
2019-12-24 380-212 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILLIARD OH
2019-11-29 380-208 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J REYNOLDSBG OH
2019-10-23 380-710 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H COLUMBUS OH
2019-08-21 380-207 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C REYNOLDSBG OH
2019-06-25 380-206 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DUBLIN OH
2019-03-29 380-205 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 NEW ALBANY OH
2019-03-18 380-800 0–9 XXXall 10 · 3 holders which blocks → INVOXIO INCORPORATED 158H COLUMBUS OH
2019-01-30 380-799 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J COLUMBUS OH
2018-12-13 380-235 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2018-11-08 380-204 0–9 XXXall 10 · 6 holders which blocks → VONAGE AMERICA LLC 197D DUBLIN OH
2018-04-10 380-997 0–9 XXXall 10 · 2 holders which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
2017-10-31 380-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C ALTON OH
2017-09-29 380-333 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C GROVEPORT OH
2017-09-29 380-444 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C COLUMBUS OH
2017-09-29 380-666 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OH 464C GROVE CITY OH
2017-09-29 380-777 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C GAHANNA OH
2017-06-20 380-867 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H COLUMBUS OH
2017-06-14 380-200 0XXX1XXX2XXX6XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CANALWHSTR OH
2017-03-15 380-209 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H COLUMBUS OH
2017-02-16 380-222 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C COLUMBUS OH
2017-02-16 380-999 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C GAHANNA OH
2017-01-17 380-390 0–9 XXXall 10 · 4 holders which blocks → WIDE VOICE, LLC - OH 765H WORTHINGTN OH
2016-05-18 380-202 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 REYNOLDSBG OH
2016-04-07 380-898 0–9 XXXwhole prefix which blocks → OHIO BELL TEL CO 9321 WESTERVL OH
— 380-201 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F COLUMBUS OH
— 380-203 0–9 XXXall 10 · 6 holders which blocks → VOIP INNOVATIONS, LLC 597F COLUMBUS OH
— 380-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-215 0–9 XXXall 10 · 7 holders which blocks → VISION CTS, LLC 125J COLUMBUS OH
— 380-216 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 REYNOLDSBG OH
— 380-233 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HILLIARD OH
— 380-237 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J REYNOLDSBG OH
— 380-239 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 COLUMBUS OH
— 380-243 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
— 380-247 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H NEW ALBANY OH
— 380-258 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H COLUMBUS OH
— 380-265 0–9 XXXall 10 · 3 holders which blocks → FIVE9, INC. 598J COLUMBUS OH
— 380-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST OH
— 380-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-700 not yet reported which blocks → OH
— 380-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 380-950 not yet reported which blocks → OH
— 380-958 not yet reported which blocks → 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.