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 563
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-11-14 | 563-362-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | DAVENPORT | IA |
| 2013-05-16 | 563-362-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | DAVENPORT | IA |
| 2013-05-16 | 563-362-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | DAVENPORT | IA |
| 2013-02-27 | 563-362-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | DAVENPORT | IA |
| 2010-12-10 | 563-484-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | DAVENPORT | IA |
| 2009-08-27 | 563-484-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | DAVENPORT | IA |
| 2007-06-26 | 563-449-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | DAVENPORT | IA |
| 2006-08-31 | 563-272-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | MUSCATINE | IA |
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.