NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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, all time — NPA 340
VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE 17
LIBERTY MOBILE USVI INC. 16
14
MULTIPLE OCN LISTING 9
VITELCOM CELLULAR, INC. 8
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
2023-06-09 340-212 not yet reported which blocks → COMCAST IP PHONE, LLC 318J CHTAMSTTHS VI
2023-01-13 340-205 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2023-01-13 340-207 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2023-01-13 340-210 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2023-01-09 340-204 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2022-02-18 340-206 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ST CROIX VI
2021-10-19 340-209 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2021-07-20 340-200 not yet reported which blocks → TELNYX LLC 073H CHTAMSTTHS VI
2021-02-01 340-208 not yet reported which blocks → T-MOBILE USA, INC. 6529 ST CROIX VI
2020-12-22 340-203 not yet reported which blocks → T-MOBILE USA, INC. 6529 CHTAMSTTHS VI
2018-01-09 340-202 not yet reported which blocks → LUMEN TECHNOLGIES ST. CROIX, LLC 128J ST CROIX VI
2018-01-09 340-249 not yet reported which blocks → LUMEN TECHNOLGIES ST. CROIX, LLC 128J CHTAMSTTHS VI
2018-01-09 340-489 not yet reported which blocks → LUMEN TECHNOLGIES ST. CROIX, LLC 128J CHNSTDSTCR VI
2018-01-09 340-625 not yet reported which blocks → LUMEN TECHNOLGIES ST. CROIX, LLC 128J FRKSTDSTCR VI
2017-09-09 340-423 not yet reported which blocks → VITELCOM CELLULAR, INC. 346D CHTAMSTTHS VI
2017-09-09 340-717 not yet reported which blocks → VITELCOM CELLULAR, INC. 346D CHTAMSTTHS VI
2017-09-09 340-725 not yet reported which blocks → VITELCOM CELLULAR, INC. 346D CHTAMSTTHS VI
2015-04-27 340-444 not yet reported which blocks → GIGSKY MOBILE, LLC 615H CHTAMSTTHS VI
2009-12-29 340-422 not yet reported which blocks → VITELCOM CELLULAR, INC. 346D CHTAMSTTHS VI
2008-06-06 340-201 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2007-07-23 340-226 not yet reported which blocks → METROPCS, INC. 5562 ST CROIX VI
2007-07-23 340-677 not yet reported which blocks → METROPCS, INC. 5562 CHTAMSTTHS VI
2006-10-26 340-718 not yet reported which blocks → VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE 3300 CHNSTDSTCR VI
2003-12-16 340-332 not yet reported which blocks → T-MOBILE USA, INC. 6529 ST CROIX VI
2003-10-13 340-344 not yet reported which blocks → T-MOBILE USA, INC. 6529 CHTAMSTTHS VI
2002-10-31 340-244 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2001-08-14 340-277 not yet reported which blocks → T-MOBILE USA, INC. 6529 ST CROIX VI
2001-08-14 340-998 not yet reported which blocks → T-MOBILE USA, INC. 6529 CHTAMSTTHS VI
— 340-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VI
— 340-220 not yet reported which blocks → VITELCOM CELLULAR, INC. 346D CHNSTDSTCR VI
— 340-227 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-228 not yet reported which blocks → VITELCOM CELLULAR, INC. 346D CHTAMSTTHS VI
— 340-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VI
— 340-340 not yet reported which blocks → VI
— 340-400 not yet reported which blocks → VI
— 340-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VI
— 340-473 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-474 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-500 not yet reported which blocks → VI
— 340-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VI
— 340-513 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-514 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST VI
— 340-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VI
— 340-626 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-642 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-643 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-690 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
— 340-692 not yet reported which blocks → VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE 3300 ST CROIX VI
— 340-693 not yet reported which blocks → VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE 3300 CHTAMSTTHS VI

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.