NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 317-620

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 317-620 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 317 blocks

Most active assignees, all time — NPA 317
BANDWIDTH.COM CLEC, LLC - IN 4
PEERLESS NETWORK OF INDIANA, LLC - IN 1
ONVOY, LLC - IN 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 1
LEVEL 3 COMMUNICATIONS, LLC - IN 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
2010-01-26 317-620-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NEWPALSTIN IN
2008-10-29 317-620-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NEWPALSTIN IN
2007-09-05 317-620-2XXX 2000–2999Assigned HANCOCK COMMUNICATIONS, INC. - IN 7459 NEWPALSTIN IN
2010-12-14 317-620-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NEWPALSTIN IN
2008-11-25 317-620-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NEWPALSTIN IN
2011-03-10 317-620-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IN 105F NEWPALSTIN IN
2012-03-21 317-620-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 NEWPALSTIN IN
2012-09-13 317-620-7XXX 7000–7999Assigned ONVOY, LLC - IN 097D NEWPALSTIN IN
2013-04-03 317-620-8XXX 8000–8999Assigned PEERLESS NETWORK OF INDIANA, LLC - IN 279F NEWPALSTIN IN
2013-11-06 317-620-9XXX 9000–9999Assigned IP HORIZON LLC 515J NEWPALSTIN IN

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.