NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 240-725

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026

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

The ten 1,000-number thousand-blocks inside prefix 240-725 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
VERIZON MARYLAND, INC. 3
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 3
TELNYX LLC 1
TELEPORT COMMUNICATIONS AMERICA, LLC - DC 1
PEERLESS NETWORK OF MARYLAND, LLC 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
— 240-725-0XXX 0000–0999Reserved VERIZON MARYLAND, INC. 9212 LXTNPKGRML MD
2016-11-18 240-725-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G LXTNPKGRML MD
2019-08-14 240-725-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LXTNPKGRML MD
2019-12-26 240-725-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LXTNPKGRML MD
2018-08-22 240-725-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LXTNPKGRML MD
— 240-725-5XXX 5000–5999Reserved VERIZON MARYLAND, INC. 9212 LXTNPKGRML MD
2017-09-06 240-725-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 LXTNPKGRML MD
— 240-725-7XXX 7000–7999Reserved VERIZON MARYLAND, INC. 9212 LXTNPKGRML MD
2018-11-07 240-725-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LXTNPKGRML MD
2017-04-17 240-725-9XXX 9000–9999Assigned TELNYX LLC 073H LXTNPKGRML MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.