NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 757-917

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 757-917 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 757 blocks

Most active assignees, all time — NPA 757
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 3
COMCAST IP PHONE, LLC 3
NEW CINGULAR WIRELESS PCS, LLC - DC 2
TELEPORT COMMUNICATIONS AMERICA, LLC - VA 1
IP HORIZON 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
2017-01-04 757-917-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 NRFOLKZON2 VA
2016-08-30 757-917-1XXX 1000–1999Assigned IP HORIZON LLC 515J NRFOLKZON2 VA
2019-08-06 757-917-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 NRFOLKZON2 VA
2018-08-16 757-917-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NRFOLKZON2 VA
2018-08-16 757-917-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NRFOLKZON2 VA
2017-09-14 757-917-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J NRFOLKZON2 VA
2018-05-23 757-917-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J NRFOLKZON2 VA
2018-05-23 757-917-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J NRFOLKZON2 VA
2017-01-04 757-917-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 NRFOLKZON2 VA
2017-01-04 757-917-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 NRFOLKZON2 VA

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.