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 925
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-12-07 | 925-527-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-12-07 | 925-527-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-12-07 | 925-527-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-12-07 | 925-527-9XXX | 9000–9999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-0XXX | 0000–0999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-1XXX | 1000–1999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-990-0XXX | 0000–0999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-1XXX | 1000–1999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-9XXX | 9000–9999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-02-09 | 925-494-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | CONCORD | CA |
| 2009-02-20 | 925-663-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2009-02-19 | 925-498-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | BSHP RNCH | CA |
| 2009-02-19 | 925-941-8XXX | 8000–8999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2006-05-10 | 925-247-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | MORAGA | CA |
| 2006-05-10 | 925-252-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | PITTSBURG | CA |
| 2006-05-10 | 925-255-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | ORINDA | CA |
| 2006-05-10 | 925-261-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | PSBG WEST | CA |
| 2006-05-10 | 925-271-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | PLEASANTON | CA |
| 2006-05-10 | 925-282-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | LAFAYETTE | CA |
| 2006-05-10 | 925-359-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | BSHP RNCH | CA |
| 2006-05-10 | 925-374-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | MARTINEZ | CA |
| 2006-05-10 | 925-453-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | LIVERMORE | CA |
| 2006-05-10 | 925-551-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | DUBLN-SNRM | CA |
| 2006-05-10 | 925-673-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | CLAYTON | CA |
| 2006-05-10 | 925-677-1XXX | 1000–1999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | CONCORD | CA |
| 2006-05-10 | 925-684-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | ECONTRCOST | CA |
| 2006-05-10 | 925-752-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | ANTIOCH | CA |
| 2006-05-10 | 925-854-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | DANVILLE | CA |
| 2006-05-10 | 925-948-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
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.