NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
— 369-959 not yet reported which blocks → CA
— 369-976 not yet reported which blocks → CA
— 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
— 380-959 not yet reported which blocks → OH
— 380-976 not yet reported which blocks → OH
— 385-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-415 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
— 385-435 not yet reported which blocks → UT
— 385-466 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
— 385-497 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
— 385-499 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
— 385-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-535 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
— 385-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST UT
— 385-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-700 not yet reported which blocks → UT
— 385-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-801 not yet reported which blocks → UT
— 385-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT UT
— 385-950 not yet reported which blocks → UT
— 385-958 not yet reported which blocks → UT
— 385-959 not yet reported which blocks → UT
— 385-976 not yet reported which blocks → UT
— 386-207 not yet reported which blocks → BAKER'S ELECTRONICS & COMM., INC. 6617 LAKE CITY FL
— 386-208 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.