NumberResearchThousands-blocks in 717-583
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 717-583 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 717 blocks
Most active assignees, all time — NPA 717
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 717-583-0XXX | 0000–0999 | Reserved | VERIZON PENNSYLVANIA, INC. | 9208 | HUMMELSTN | PA |
| — | 717-583-1XXX | 1000–1999 | Reserved | VERIZON PENNSYLVANIA, INC. | 9208 | HUMMELSTN | PA |
| — | 717-583-2XXX | 2000–2999 | Reserved | VERIZON PENNSYLVANIA, INC. | 9208 | HUMMELSTN | PA |
| 2024-01-09 | 717-583-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HUMMELSTN | PA |
| — | 717-583-4XXX | 4000–4999 | Reserved | VERIZON PENNSYLVANIA, INC. | 9208 | HUMMELSTN | PA |
| 2005-06-30 | 717-583-5XXX | 5000–5999 | Assigned | CTSI, INC. - PA | 7513 | HUMMELSTN | PA |
| 2013-10-25 | 717-583-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | HUMMELSTN | PA |
| 2020-07-22 | 717-583-7XXX | 7000–7999 | Assigned | ONVOY, LLC - PA | 547E | HUMMELSTN | PA |
| 2020-07-22 | 717-583-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | HUMMELSTN | PA |
| 2023-12-20 | 717-583-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | HUMMELSTN | PA |
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.