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
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-07-03 | 616-357-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ADA | MI |
| 2012-02-14 | 616-312-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | HOLLAND | MI |
| 2010-07-28 | 616-528-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | CALEDONIA | MI |
| 2010-07-14 | 616-217-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | BYRON CTR | MI |
| 2009-05-18 | 616-425-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ADA | MI |
| 2009-05-15 | 616-378-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | JAMESTOWN | MI |
| 2009-01-20 | 616-951-0XXX | 0000–0999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ROCKFORD | MI |
| 2009-01-06 | 616-209-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | HUDSONVL | MI |
| 2009-01-06 | 616-421-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | LOWELL | MI |
| 2008-12-30 | 616-205-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | SPARTA | MI |
| 2008-11-20 | 616-953-1XXX | 1000–1999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ZEELAND | MI |
| 2008-11-04 | 616-263-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | CEDAR SPG | MI |
| 2008-11-04 | 616-803-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | DUTTON | MI |
| 2008-06-18 | 616-607-1XXX | 1000–1999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | GRANDHAVEN | MI |
| 2008-06-11 | 616-818-3XXX | 3000–3999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | GRAND RPDS | 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.