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 734
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 |
|---|---|---|---|---|---|---|---|
| 2011-03-28 | 734-279-6XXX | 6000–6999 | Assigned | TC3 TELECOM, INC. - MI | 3459 | PETERSBURG | MI |
| 2010-10-07 | 734-868-6XXX | 6000–6999 | Assigned | TC3 TELECOM, INC. - MI | 3459 | IDA | MI |
| 2009-05-21 | 734-529-6XXX | 6000–6999 | Assigned | TC3 TELECOM, INC. - MI | 3459 | DUNDEE | MI |
| 2008-07-29 | 734-295-3XXX | 3000–3999 | Assigned | TC3 TELECOM, INC. - MI | 3459 | SALINE | MI |
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.