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 616
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-05-09 | 616-449-6XXX | 6000–6999 | Assigned | WOW! INTERNET, CABLE AND PHONE | 961J | FREEPORT | MI |
| 2012-05-04 | 616-504-3XXX | 3000–3999 | Assigned | WOW! INTERNET, CABLE AND PHONE | 961J | CLARKSVL | MI |
| 2012-05-02 | 616-319-6XXX | 6000–6999 | Assigned | WOW! INTERNET, CABLE AND PHONE | 961J | LOWELL | MI |
| 2012-05-02 | 616-537-4XXX | 4000–4999 | Assigned | WOW! INTERNET, CABLE AND PHONE | 961J | LAKEODESSA | MI |
| 2012-05-02 | 616-577-5XXX | 5000–5999 | Assigned | WOW! INTERNET, CABLE AND PHONE | 961J | SARANAC | 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.