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
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-06-13 | 563-428-2XXX | 2000–2999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | RANDALIA | IA |
| 2023-06-13 | 563-429-6XXX | 6000–6999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | ALPHA | IA |
| 2020-08-12 | 563-297-3XXX | 3000–3999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | ARLINGTON | IA |
| 2020-08-06 | 563-290-3XXX | 3000–3999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | WAUCOMA | IA |
| 2020-07-31 | 563-238-6XXX | 6000–6999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | LAWLER | IA |
| 2020-07-31 | 563-778-3XXX | 3000–3999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | ST LUCAS | IA |
| 2019-11-15 | 563-224-5XXX | 5000–5999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | MAYNARD | IA |
| 2019-11-15 | 563-339-5XXX | 5000–5999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | SUMNER | IA |
| 2019-06-18 | 563-337-3XXX | 3000–3999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | FAYETTE | 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.