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 978

VERIZON NEW ENGLAND INC. 221

PAETEC ITEL, LLC 90

LEVEL 3 COMMUNICATIONS, LLC - MA 86

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 71

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 59

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
—	978-405	4XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	CONCORD	MA
—	978-406	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	DANVERS	MA
—	978-407	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	FITCHBURG	MA
—	978-409	0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	ANDOVER	MA
—	978-410	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	GARDNER	MA
—	978-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	978-412	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	IPSWICH	MA
—	978-414	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	SALEM	MA
—	978-415	0XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	BERLIN	MA
—	978-416	1XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	LAWRENCE	MA
—	978-418	3XXX4XXX9XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	LOWELL	MA
—	978-421	3XXX4XXX5XXX6XXX7XXX which blocks →	TC SYSTEMS, INC.	7135	LOWELL	MA
—	978-422	1XXX4XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	STERLING	MA
—	978-423	none assigned yet which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	LOWELL	MA
—	978-424	1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	TC SYSTEMS, INC.	7135	FITCHBURG	MA
—	978-425	1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	SHIRLEY	MA
—	978-426	not yet reported which blocks →	NORFOLK COUNTY INTERNET, INC.	6083	PRINCETON	MA
—	978-429	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	ACTON	MA
—	978-430	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BILLERICA	MA
—	978-431	1XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	LITTLETON	MA
—	978-432	0XXX2XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	ROWLEY	MA
—	978-433	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	PEPPERELL	MA
—	978-435	1XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BILLERICA	MA
—	978-436	none assigned yet which blocks →	VERIZON NEW ENGLAND INC.	9102	BILLERICA	MA
—	978-437	0XXX3XXX5XXX7XXX8XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	BILLERICA	MA
—	978-439	0XXX2XXX5XXX6XXX7XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	BILLERICA	MA
—	978-440	0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	SUDBURY	MA
—	978-441	8XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-442	6XXX7XXX8XXX9XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-443	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	SUDBURY	MA
—	978-444	none assigned yet which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	WILMINGTON	MA
—	978-445	1XXX5XXX8XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	SUDBURY	MA
—	978-446	4XXX6XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-447	0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	WILMINGTON	MA
—	978-448	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	GROTON	MA
—	978-449	1XXX4XXX5XXX7XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	GROTON	MA
—	978-450	3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	MAYNARD	MA
—	978-451	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	CONCORD	MA
—	978-452	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-453	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-454	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-455	not yet reported which blocks →	COMCAST IP PHONE, LLC	318J	LOWELL	MA
—	978-456	0XXX1XXX4XXX5XXX6XXX · 5 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	HARVARD	MA
—	978-457	7XXX8XXX · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	HAVERHILL	MA
—	978-458	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-459	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-461	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	MAYNARD	MA
—	978-462	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWBURYPT	MA
—	978-463	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWBURYPT	MA
—	978-464	1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	PRINCETON	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.