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
—	978-465	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWBURYPT	MA
—	978-466	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LEOMINSTER	MA
—	978-467	0–9 XXXall 10 · 6 holders which blocks →	RCN TELECOM SERVICES, INC. - MA	7619	WESTFORD	MA
—	978-468	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	HAMILTON	MA
—	978-469	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	HAVERHILL	MA
—	978-470	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ANDOVER	MA
—	978-472	2XXX which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	CONCORD	MA
—	978-473	7XXX8XXX · 2 holders which blocks →	METROPCS, INC.	5562	BEVERLY	MA
—	978-474	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ANDOVER	MA
—	978-475	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ANDOVER	MA
—	978-477	none assigned yet which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	W NEWBURY	MA
—	978-478	4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	HAVERHILL	MA
—	978-479	none assigned yet which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	LOWELL	MA
—	978-480	0XXX2XXX3XXX6XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	TOWNSEND	MA
—	978-481	0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	PRINCETON	MA
—	978-482	1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	ANDOVER	MA
—	978-484	1XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	ROWLEY	MA
—	978-485	2XXX3XXX4XXX5XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	SALEM	MA
—	978-486	5XXX7XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	LITTLETON	MA
—	978-487	0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	TC SYSTEMS, INC.	7135	AYER	MA
—	978-488	4XXX7XXX8XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	BILLERICA	MA
—	978-489	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	ACTON	MA
—	978-491	0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	GLOUCESTER	MA
—	978-492	not yet reported which blocks →	NORFOLK COUNTY INTERNET, INC.	6083	LOWELL	MA
—	978-493	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MAYNARD	MA
—	978-494	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ANDOVER	MA
—	978-497	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LOWELL	MA
—	978-498	4XXX which blocks →	TC SYSTEMS, INC.	7135	SALEM	MA
—	978-499	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWBURYPT	MA
—	978-502	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FITCHBURG	MA
—	978-503	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks →	TC SYSTEMS, INC.	7135	FITCHBURG	MA
—	978-504	2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	AMESBURY	MA
—	978-506	0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	LITTLETON	MA
—	978-507	7XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	SUDBURY	MA
—	978-509	0XXX which blocks →	METROPCS, INC.	5562	LAWRENCE	MA
—	978-510	0XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	W NEWBURY	MA
—	978-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	978-513	5XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	LOWELL	MA
—	978-514	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	LEOMINSTER	MA
—	978-515	1XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	GLOUCESTER	MA
—	978-516	2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	FITCHBURG	MA
—	978-518	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	NEWBURYPT	MA
—	978-521	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	HAVERHILL	MA
—	978-522	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BEVERLY	MA
—	978-523	1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TC SYSTEMS, INC.	7135	TOWNSEND	MA
—	978-524	8XXX9XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	BEVERLY	MA
—	978-525	0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	MANCHESTER	MA
—	978-526	0XXX2XXX3XXX5XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	MANCHESTER	MA
—	978-527	5XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	WILMINGTON	MA
—	978-528	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	BILLERICA	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.