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 608
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-04-30 | 608-977-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2015-04-30 | 608-977-6XXX | 6000–6999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2015-04-30 | 608-977-7XXX | 7000–7999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2015-04-30 | 608-977-8XXX | 8000–8999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2015-04-30 | 608-977-9XXX | 9000–9999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2011-09-23 | 608-287-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2011-06-07 | 608-371-8XXX | 8000–8999 | Assigned | WISCONSIN BELL INC | 9327 | JANESVILLE | WI |
| 2010-06-09 | 608-665-6XXX | 6000–6999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2010-06-09 | 608-665-7XXX | 7000–7999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2010-06-09 | 608-665-8XXX | 8000–8999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2010-06-08 | 608-665-4XXX | 4000–4999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2010-06-08 | 608-665-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2009-10-16 | 608-616-1XXX | 1000–1999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2009-10-16 | 608-616-3XXX | 3000–3999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-0XXX | 0000–0999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-1XXX | 1000–1999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-2XXX | 2000–2999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-3XXX | 3000–3999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-4XXX | 4000–4999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-6XXX | 6000–6999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-7XXX | 7000–7999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-8XXX | 8000–8999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
| 2003-12-11 | 608-890-9XXX | 9000–9999 | Assigned | WISCONSIN BELL INC | 9327 | MADISON | WI |
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.