NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 781-486

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 781-486 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 781 blocks

Most active assignees, all time — NPA 781
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 5
BANDWIDTH.COM CLEC, LLC - MA 2
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 1
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 781-486-0XXX 0000–0999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAKEFIELD MA
2013-04-08 781-486-1XXX 1000–1999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F WAKEFIELD MA
— 781-486-2XXX 2000–2999Available WAKEFIELD MA
2013-05-16 781-486-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WAKEFIELD MA
2015-05-06 781-486-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WAKEFIELD MA
2007-05-23 781-486-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WAKEFIELD MA
— 781-486-6XXX 6000–6999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAKEFIELD MA
— 781-486-7XXX 7000–7999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAKEFIELD MA
2005-06-27 781-486-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAKEFIELD MA
2005-06-27 781-486-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAKEFIELD 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.