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 774

BANDWIDTH.COM CLEC, LLC - MA 23

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
2019-06-20	774-393	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	SHREWSBURY	MA
2019-05-16	774-390	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	SOUTHGATE	MA
2019-05-13	774-399	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	WESTBORO	MA
2017-05-10	774-341	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	HOLLISTON	MA
2015-06-19	774-813	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	WHITINSVL	MA
2014-07-31	774-515	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	BOYLSTON	MA
2014-05-21	774-507	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	MEDWAY	MA
2014-04-30	774-385	0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	RUTLAND	MA
2013-05-06	774-415	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	AUBURN	MA
2011-06-02	774-294	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	FALL RIVER	MA
2011-06-02	774-462	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	MILFORD	MA
2010-06-02	774-338	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	SAGAMORE	MA
2010-02-12	774-315	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	WALPOLE	MA
2010-02-09	774-325	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	NANTUCKET	MA
2010-02-09	774-326	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	WAREHAM	MA
2010-02-09	774-371	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	SPENCER	MA
2002-03-05	774-247	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	BUZZARDSBY	MA
2001-09-13	774-469	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	MEDFIELD	MA
2001-08-27	774-231	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	NATICK	MA
2001-07-06	774-643	1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	NO ATTLEBO	MA
—	774-298	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	OAKHAM	MA
—	774-593	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	PROVINCETN	MA
—	774-613	1XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	FRANKLIN	MA

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.