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 580
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-06-29 | 580-901-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | CANUTE | OK |
| 2017-07-06 | 580-459-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | MILBURN | OK |
| 2017-07-05 | 580-809-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | SMITHVILLE | OK |
| 2016-08-02 | 580-441-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | ELMORECITY | OK |
| 2016-07-27 | 580-972-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | STERLING | OK |
| 2016-07-13 | 580-671-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | MT VIEW | OK |
| 2016-07-13 | 580-961-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | STRINGTOWN | OK |
| 2016-07-13 | 580-962-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | BURNS FLAT | OK |
| 2016-06-30 | 580-905-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | MILL CREEK | OK |
| 2016-06-30 | 580-960-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | CORN | OK |
| 2015-06-19 | 580-270-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | VELMA | OK |
| 2015-06-19 | 580-971-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | SNYDER | OK |
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.