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 480
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 |
|---|---|---|---|---|---|---|---|
| 2016-08-22 | 480-476-7XXX | 7000–7999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2015-12-23 | 480-527-2XXX | 2000–2999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2013-12-27 | 480-434-6XXX | 6000–6999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2012-08-17 | 480-800-3XXX | 3000–3999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2011-11-18 | 480-646-8XXX | 8000–8999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2010-06-07 | 480-745-3XXX | 3000–3999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2010-06-07 | 480-745-8XXX | 8000–8999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2008-05-27 | 480-270-5XXX | 5000–5999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2008-05-27 | 480-270-6XXX | 6000–6999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2007-09-18 | 480-291-6XXX | 6000–6999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2007-09-17 | 480-291-7XXX | 7000–7999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2007-07-19 | 480-291-5XXX | 5000–5999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2007-07-19 | 480-291-8XXX | 8000–8999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2006-05-18 | 480-302-6XXX | 6000–6999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2006-04-04 | 480-278-7XXX | 7000–7999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
| 2006-04-04 | 480-278-8XXX | 8000–8999 | Assigned | SADDLEBACK COMMUNICATIONS COMPANY - AZ | 7991 | PHOENIX | AZ |
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.