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 810
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2019-08-02 | 810-242-4XXX | 4000–4999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2019-08-02 | 810-937-4XXX | 4000–4999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2017-11-20 | 810-428-2XXX | 2000–2999 | Assigned | TELNET WORLDWIDE, INC. | 817J | GRANDBLANC | MI |
| 2013-06-20 | 810-216-0XXX | 0000–0999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2013-06-20 | 810-216-1XXX | 1000–1999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2013-06-20 | 810-216-2XXX | 2000–2999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2013-06-20 | 810-216-3XXX | 3000–3999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2013-06-20 | 810-216-4XXX | 4000–4999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2005-08-05 | 810-630-5XXX | 5000–5999 | Assigned | TELNET WORLDWIDE, INC. | 817J | SWARTZ CRK | MI |
| 2005-08-05 | 810-673-2XXX | 2000–2999 | Assigned | TELNET WORLDWIDE, INC. | 817J | ALMONT | MI |
| 2005-08-03 | 810-201-2XXX | 2000–2999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PT SANILAC | MI |
| 2005-08-03 | 810-344-3XXX | 3000–3999 | Assigned | TELNET WORLDWIDE, INC. | 817J | GRANDBLANC | MI |
| 2005-08-03 | 810-458-2XXX | 2000–2999 | Assigned | TELNET WORLDWIDE, INC. | 817J | LINDEN | MI |
| 2005-08-03 | 810-488-8XXX | 8000–8999 | Assigned | TELNET WORLDWIDE, INC. | 817J | PORT HURON | MI |
| 2005-08-03 | 810-544-1XXX | 1000–1999 | Assigned | TELNET WORLDWIDE, INC. | 817J | CARSONVL | MI |
| 2005-08-03 | 810-678-1XXX | 1000–1999 | Assigned | TELNET WORLDWIDE, INC. | 817J | METAMORA | MI |
| 2005-08-03 | 810-683-1XXX | 1000–1999 | Assigned | TELNET WORLDWIDE, INC. | 817J | IMLAY CITY | 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.