NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 916
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 |
|---|---|---|---|---|---|---|---|
| 2017-11-13 | 916-918-8XXX | 8000–8999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | RSVL MAIN | CA |
| 2017-09-26 | 916-345-5XXX | 5000–5999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SCRM NORTH | CA |
| 2017-09-26 | 916-831-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | ELK GROVE | CA |
| 2017-07-31 | 916-301-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | RSVL CTHT | CA |
| 2014-08-13 | 916-824-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SO PLACER | CA |
| 2013-01-24 | 916-672-6XXX | 6000–6999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SO PLACER | CA |
| 2010-02-05 | 916-934-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | FOLSOM | CA |
| 2009-07-07 | 916-409-2XXX | 2000–2999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | LINCOLN | CA |
| 2009-05-28 | 916-259-2XXX | 2000–2999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SO PLACER | CA |
| 2009-04-01 | 916-209-3XXX | 3000–3999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | LINCOLN | CA |
| 2009-04-01 | 916-259-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SO PLACER | CA |
| 2009-04-01 | 916-899-6XXX | 6000–6999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | RSVL MAIN | CA |
| 2009-03-05 | 916-572-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SCRM MAIN | CA |
| 2008-05-23 | 916-873-8XXX | 8000–8999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SCRM MAIN | CA |
| 2008-01-10 | 916-872-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | RSVL MAIN | CA |
| 2006-12-29 | 916-253-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | LINCOLN | CA |
| 2006-12-27 | 916-259-4XXX | 4000–4999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SO PLACER | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.