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 248
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-07-02 | 248-450-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | SOUTHFIELD | MI |
| 2011-12-22 | 248-558-1XXX | 1000–1999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | CLARKSTON | MI |
| 2010-04-22 | 248-716-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | COMMERCE | MI |
| 2009-07-21 | 248-876-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | FARMINGTON | MI |
| 2009-05-15 | 248-667-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | SOUTH LYON | MI |
| 2009-01-20 | 248-805-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROCHESTER | MI |
| 2008-11-04 | 248-528-7XXX | 7000–7999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | TROY | MI |
| 2008-10-08 | 248-237-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | AUBURN HTS | MI |
| 2008-10-03 | 248-220-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | BIRMINGHAM | MI |
| 2008-10-03 | 248-679-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | NORTHVILLE | MI |
| 2008-08-22 | 248-586-4XXX | 4000–4999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROYAL OAK | MI |
| 2008-08-19 | 248-418-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | PONTIAC | MI |
| 2008-06-25 | 248-406-7XXX | 7000–7999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | W BLOOMFLD | MI |
| 2008-06-18 | 248-257-7XXX | 7000–7999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | DRAYTON PL | MI |
| 2008-06-12 | 248-255-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | WALLEDLAKE | MI |
| 2008-06-11 | 248-228-1XXX | 1000–1999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | SOUTHFIELD | MI |
| 2008-05-29 | 248-690-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | LAKE ORION | MI |
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.