NumberResearchThousands-blocks in 717-455
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 717-455 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
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-01-16 | 717-455-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | STRASBURG | PA |
| — | 717-455-1XXX | 1000–1999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | STRASBURG | PA |
| 2009-03-03 | 717-455-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | STRASBURG | PA |
| 2016-02-25 | 717-455-3XXX | 3000–3999 | Assigned | ONVOY, LLC - PA | 547E | STRASBURG | PA |
| 2004-03-01 | 717-455-4XXX | 4000–4999 | Assigned | CTSI, INC. - PA | 7513 | STRASBURG | PA |
| 2005-03-10 | 717-455-5XXX | 5000–5999 | Assigned | WINDSTREAM D & E SYSTEMS, INC. - PA | 4114 | STRASBURG | PA |
| 2013-10-18 | 717-455-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | STRASBURG | PA |
| 2010-02-01 | 717-455-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | STRASBURG | PA |
| 2016-02-22 | 717-455-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | STRASBURG | PA |
| 2006-09-01 | 717-455-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | STRASBURG | 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.