NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, all time — NPA 717
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-11-16 | 717-271-5XXX | 5000–5999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | EPHRATA | PA |
| 2007-11-16 | 717-335-5XXX | 5000–5999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | DENVER | PA |
| 2007-11-16 | 717-484-3XXX | 3000–3999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | ADAMSTOWN | PA |
| 2007-11-16 | 717-859-9XXX | 9000–9999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | AKRON | PA |
| 2007-11-13 | 717-568-4XXX | 4000–4999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | LITITZ | PA |
| 2007-11-13 | 717-879-4XXX | 4000–4999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | MANHEIM | 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.