NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 319
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-04-11 | 319-719-9XXX | 9000–9999 | Assigned | AIRUS, INC - IA | 423H | VINTON | IA |
| 2021-09-27 | 319-261-8XXX | 8000–8999 | Assigned | AIRUS, INC - IA | 423H | CEDAR RPDS | IA |
| 2021-09-27 | 319-379-0XXX | 0000–0999 | Assigned | AIRUS, INC - IA | 423H | IOWA CITY | IA |
| 2020-09-02 | 319-348-2XXX | 2000–2999 | Assigned | AIRUS, INC - IA | 423H | WATERLOO | IA |
| 2020-03-26 | 319-600-1XXX | 1000–1999 | Assigned | AIRUS, INC - IA | 423H | IOWA CITY | IA |
| 2019-10-16 | 319-536-9XXX | 9000–9999 | Assigned | AIRUS, INC - IA | 423H | CEDAR RPDS | IA |
| 2019-09-03 | 319-302-2XXX | 2000–2999 | Assigned | AIRUS, INC - IA | 423H | CENTER PT | IA |
| 2019-05-08 | 319-302-1XXX | 1000–1999 | Assigned | AIRUS, INC - IA | 423H | CENTER PT | IA |
| 2019-04-29 | 319-318-9XXX | 9000–9999 | Assigned | AIRUS, INC - IA | 423H | VINTON | IA |
| 2019-04-29 | 319-666-0XXX | 0000–0999 | Assigned | AIRUS, INC - IA | 423H | CEDARFALLS | IA |
| 2019-02-19 | 319-289-9XXX | 9000–9999 | Assigned | AIRUS, INC - IA | 423H | CEDAR RPDS | IA |
| 2018-12-18 | 319-300-1XXX | 1000–1999 | Assigned | AIRUS, INC - IA | 423H | WATERLOO | IA |
| 2018-09-11 | 319-743-2XXX | 2000–2999 | Assigned | AIRUS, INC - IA | 423H | CEDAR RPDS | IA |
| 2018-08-30 | 319-569-8XXX | 8000–8999 | Assigned | AIRUS, INC - IA | 423H | IOWA CITY | IA |
| 2018-07-05 | 319-569-3XXX | 3000–3999 | Assigned | AIRUS, INC - IA | 423H | IOWA CITY | IA |
| 2018-01-23 | 319-252-1XXX | 1000–1999 | Assigned | AIRUS, INC - IA | 423H | WATERLOO | IA |
| 2017-09-06 | 319-720-9XXX | 9000–9999 | Assigned | AIRUS, INC - IA | 423H | CEDAR RPDS | IA |
| 2017-07-19 | 319-569-0XXX | 0000–0999 | Assigned | AIRUS, INC - IA | 423H | IOWA CITY | IA |
| 2014-10-28 | 319-519-1XXX | 1000–1999 | Assigned | AIRUS, INC - IA | 423H | IOWA CITY | IA |
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.