NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026
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 667
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-11-23 | 667-240-1XXX | 1000–1999 | Assigned | BARR TELL USA, INC. | 964H | COLUMBIA | MD |
| 2016-11-23 | 667-967-1XXX | 1000–1999 | Assigned | BARR TELL USA, INC. | 964H | GLENBURNIE | MD |
| 2016-11-18 | 667-215-1XXX | 1000–1999 | Assigned | BARR TELL USA, INC. | 964H | ELKTON | MD |
| 2016-11-18 | 667-307-3XXX | 3000–3999 | Assigned | BARR TELL USA, INC. | 964H | CROFTON | MD |
| 2016-11-18 | 667-314-1XXX | 1000–1999 | Assigned | BARR TELL USA, INC. | 964H | WESTMINSTR | MD |
| 2016-11-18 | 667-352-1XXX | 1000–1999 | Assigned | BARR TELL USA, INC. | 964H | ABERDEEN | MD |
| 2016-11-18 | 667-701-7XXX | 7000–7999 | Assigned | BARR TELL USA, INC. | 964H | ELKRIDGE | MD |
| 2016-11-18 | 667-802-3XXX | 3000–3999 | Assigned | BARR TELL USA, INC. | 964H | CATONSVL | MD |
| 2016-11-11 | 667-400-1XXX | 1000–1999 | Assigned | BARR TELL USA, INC. | 964H | BALTIMORE | MD |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.