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 414
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 |
|---|---|---|---|---|---|---|---|
| 2012-12-18 | 414-585-1XXX | 1000–1999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2012-12-18 | 414-585-2XXX | 2000–2999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2012-12-18 | 414-585-3XXX | 3000–3999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2012-12-18 | 414-585-4XXX | 4000–4999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2012-12-18 | 414-585-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2012-12-18 | 414-585-6XXX | 6000–6999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2012-12-18 | 414-585-7XXX | 7000–7999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2010-10-19 | 414-939-1XXX | 1000–1999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2010-10-19 | 414-939-2XXX | 2000–2999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2010-06-25 | 414-301-8XXX | 8000–8999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN5 | WI |
| 2008-05-08 | 414-245-0XXX | 0000–0999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-1XXX | 1000–1999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-2XXX | 2000–2999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-3XXX | 3000–3999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-4XXX | 4000–4999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-6XXX | 6000–6999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-7XXX | 7000–7999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-8XXX | 8000–8999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2008-05-08 | 414-245-9XXX | 9000–9999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2006-05-01 | 414-459-2XXX | 2000–2999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2006-03-08 | 414-459-7XXX | 7000–7999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2006-02-10 | 414-459-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2006-02-10 | 414-459-6XXX | 6000–6999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2003-09-26 | 414-326-1XXX | 1000–1999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| 2003-09-26 | 414-326-2XXX | 2000–2999 | Assigned | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | 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.