NumberResearchThousands-blocks in 317-564
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
The ten 1,000-number thousand-blocks inside prefix 317-564 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
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-03-03 | 317-564-0XXX | 0000–0999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | CARMEL | IN |
| 2020-12-18 | 317-564-1XXX | 1000–1999 | Assigned | STRATUS NETWORKS | 495J | CARMEL | IN |
| — | 317-564-2XXX | 2000–2999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | CARMEL | IN |
| — | 317-564-3XXX | 3000–3999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | CARMEL | IN |
| 2007-09-11 | 317-564-4XXX | 4000–4999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | CARMEL | IN |
| 2005-05-10 | 317-564-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | CARMEL | IN |
| 2006-03-20 | 317-564-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | CARMEL | IN |
| 2009-12-03 | 317-564-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | CARMEL | IN |
| 2008-11-10 | 317-564-8XXX | 8000–8999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | CARMEL | IN |
| 2010-06-04 | 317-564-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | CARMEL | IN |
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.