NumberResearchThousands-blocks in 317-606
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 317-606 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
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-04-18 | 317-606-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | CICERO | IN |
| 2024-12-10 | 317-606-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | CICERO | IN |
| 2010-01-26 | 317-606-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | CICERO | IN |
| 2010-09-21 | 317-606-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | CICERO | IN |
| 2014-04-29 | 317-606-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | CICERO | IN |
| 2013-12-11 | 317-606-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | CICERO | IN |
| 2014-10-03 | 317-606-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | CICERO | IN |
| 2014-05-30 | 317-606-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CICERO | IN |
| 2007-08-08 | 317-606-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | CICERO | IN |
| 2015-09-24 | 317-606-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | CICERO | 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.