Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	339-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	339-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	339-554	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	XXXXXXXXXX	MA
—	339-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	MA
—	339-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	339-700	not yet reported which blocks →				MA
—	339-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	339-777	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MA	892D	NEEDHAM	MA
—	339-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	339-814	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WALTHAM	MA
—	339-900	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	MARSHFIELD	MA
—	339-911	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	339-920	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WALTHAM	MA
—	339-931	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	XXXXXXXXXX	MA
—	339-950	not yet reported which blocks →				MA
—	339-958	not yet reported which blocks →			XXXXXXXXXX	MA
—	339-959	not yet reported which blocks →				MA
—	339-976	not yet reported which blocks →				MA
—	339-999	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	WOBURN	MA
—	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
—	340-700	not yet reported which blocks →				VI
—	340-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	VI
—	340-712	not yet reported which blocks →	VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE	3300	CHNSTDSTCR	VI
—	340-713	not yet reported which blocks →	VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE	3300	CHNSTDSTCR	VI
—	340-714	not yet reported which blocks →	VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE	3300	CHTAMSTTHS	VI
—	340-715	not yet reported which blocks →	VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE	3300	CHTAMSTTHS	VI
—	340-719	not yet reported which blocks →	VIRGIN ISLANDS TEL. CORP. DBA INNOVATIVE TELEPHONE	3300	CHNSTDSTCR	VI
—	340-727	not yet reported which blocks →	VITELCOM CELLULAR, INC.	346D	CHTAMSTTHS	VI
—	340-770	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 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.