NumberResearchThousands-blocks in 317-300
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
The ten 1,000-number thousand-blocks inside prefix 317-300 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 |
|---|---|---|---|---|---|---|---|
| 2005-10-05 | 317-300-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENWOOD | IN |
| 2005-10-05 | 317-300-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENWOOD | IN |
| 2009-07-21 | 317-300-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | GREENWOOD | IN |
| 2024-12-02 | 317-300-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENWOOD | IN |
| 2010-01-25 | 317-300-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | GREENWOOD | IN |
| 2010-06-04 | 317-300-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | GREENWOOD | IN |
| 2010-09-21 | 317-300-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | GREENWOOD | IN |
| 2011-06-07 | 317-300-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF INDIANA, LLC - IN | 279F | GREENWOOD | IN |
| 2010-08-30 | 317-300-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENWOOD | IN |
| 2012-10-23 | 317-300-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENWOOD | 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.