NumberResearchThousands-blocks in 408-797
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 408-797 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 408 blocks
Most active assignees, all time — NPA 408
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 |
|---|---|---|---|---|---|---|---|
| 2013-10-01 | 408-797-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS NORTH | CA |
| 2012-12-03 | 408-797-1XXX | 1000–1999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SNJS NORTH | CA |
| 2013-01-28 | 408-797-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | SNJS NORTH | CA |
| 2013-04-19 | 408-797-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | SNJS NORTH | CA |
| 2012-10-16 | 408-797-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS NORTH | CA |
| 2012-10-16 | 408-797-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS NORTH | CA |
| 2012-10-16 | 408-797-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS NORTH | CA |
| 2012-10-16 | 408-797-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS NORTH | CA |
| 2012-10-16 | 408-797-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS NORTH | CA |
| 2013-06-26 | 408-797-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS NORTH | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.