NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 347-503

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 347-503 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 347 blocks

Most active assignees, all time — NPA 347
BANDWIDTH.COM CLEC, LLC - NY 3
OMNIPOINT COMMUNICATIONS, INC. - NY 2
LEVEL 3 COMMUNICATIONS, LLC - NY 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2
TERRA NOVA TELECOM INC. 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
2005-04-12 347-503-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN03 NY
2022-07-21 347-503-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN03 NY
2022-03-11 347-503-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J NWYRCYZN03 NY
2021-10-20 347-503-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN03 NY
2021-10-20 347-503-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN03 NY
2022-03-09 347-503-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN03 NY
2022-03-09 347-503-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN03 NY
2005-04-12 347-503-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN03 NY
2005-03-21 347-503-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
2005-03-21 347-503-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY

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.