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 |
|---|---|---|---|---|---|---|---|
| 2020-05-05 | 563-261-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | MUSCATINE | IA |
| 2020-05-05 | 563-284-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | WALCOTT | IA |
| 2020-05-05 | 563-934-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | MILES | IA |
| 2020-05-04 | 563-227-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | DUBUQUE | IA |
| 2020-05-04 | 563-521-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | MAQUOKETA | IA |
| 2020-05-01 | 563-206-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | CLINTON | IA |
| 2020-05-01 | 563-356-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CHESTER | IA |
| 2019-12-03 | 563-204-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | LANSING | IA |
| 2019-11-21 | 563-286-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | DAVENPORT | IA |
| 2019-08-07 | 563-204-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | LANSING | IA |
| 2018-06-19 | 563-204-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | LANSING | IA |
| 2018-06-19 | 563-292-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | WEST UNION | IA |
| 2018-06-19 | 563-794-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | WAUKON | IA |
| 2018-06-19 | 563-800-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CALMAR | IA |
| 2018-04-19 | 563-334-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | DECORAH | 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.