NumberResearchThousands-blocks in 217-878
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 217-878 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 217 blocks
Most active assignees, all time — NPA 217
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-01-21 | 217-878-0XXX | 0000–0999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | ELKHART | IL |
| 2024-02-09 | 217-878-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ELKHART | IL |
| 2012-01-27 | 217-878-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ELKHART | IL |
| — | 217-878-3XXX | 3000–3999 | Available | ELKHART | IL | ||
| — | 217-878-4XXX | 4000–4999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | ELKHART | IL |
| — | 217-878-5XXX | 5000–5999 | Available | ELKHART | IL | ||
| — | 217-878-6XXX | 6000–6999 | Available | ELKHART | IL | ||
| 2014-07-10 | 217-878-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ELKHART | IL |
| — | 217-878-8XXX | 8000–8999 | Available | ELKHART | IL | ||
| — | 217-878-9XXX | 9000–9999 | Available | ELKHART | IL |
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.