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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-02-22 | 734-818-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | TRENTON | MI |
| 2011-05-03 | 734-309-4XXX | 4000–4999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | WYANDOTTE | MI |
| 2010-07-27 | 734-335-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | PLYMOUTH | MI |
| 2010-07-07 | 734-229-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROMULUS | MI |
| 2010-05-26 | 734-252-7XXX | 7000–7999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | BELLEVILLE | MI |
| 2009-12-14 | 734-726-1XXX | 1000–1999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | DEXTER | MI |
| 2009-12-14 | 734-731-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | MONROE | MI |
| 2008-11-26 | 734-405-3XXX | 3000–3999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | WAYNE | MI |
| 2008-11-26 | 734-695-7XXX | 7000–7999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | YPSILANTI | MI |
| 2008-10-24 | 734-619-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ANN ARBOR | MI |
| 2008-06-27 | 734-452-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | LIVONIA | 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.