Thousands-blocks in 978-587

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 978-587 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 978 blocks

Most active assignees, all time — NPA 978

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 5

COMCAST IP PHONE, LLC 3

ONVOY, LLC - MA 1

LEVEL 3 COMMUNICATIONS, LLC - MA 1

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 thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
—	978-587-0XXX	0000–0999	Reserved	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	PEABODY	MA
2005-08-02	978-587-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PEABODY	MA
2006-09-20	978-587-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	PEABODY	MA
2006-09-20	978-587-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	PEABODY	MA
2013-03-01	978-587-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PEABODY	MA
2007-07-06	978-587-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PEABODY	MA
2008-07-03	978-587-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PEABODY	MA
2007-01-04	978-587-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PEABODY	MA
—	978-587-8XXX	8000–8999	Reserved	COMCAST IP PHONE, LLC	318J	PEABODY	MA
2023-07-12	978-587-9XXX	9000–9999	Assigned	ONVOY, LLC - MA	892D	PEABODY	MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.