NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 240-490

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 240-490 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 240 blocks

Most active assignees, all time — NPA 240
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 3
COMCAST IP PHONE, LLC 3
BANDWIDTH.COM CLEC, LLC - MD 3
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 240-490-0XXX 0000–0999Reserved OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MIDDLETOWN MD
— 240-490-1XXX 1000–1999Reserved OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MIDDLETOWN MD
2010-05-28 240-490-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F MIDDLETOWN MD
2009-10-15 240-490-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 MIDDLETOWN MD
2010-09-17 240-490-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F MIDDLETOWN MD
2012-04-05 240-490-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN MD
2015-06-23 240-490-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MIDDLETOWN MD
2007-02-26 240-490-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN MD
2014-08-28 240-490-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN MD
2014-04-14 240-490-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F MIDDLETOWN MD

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.