NumberResearchThousands-blocks in 805-638
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 805-638 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 805 blocks
Most active assignees, all time — NPA 805
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-09-03 | 805-638-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SIMIVALLEY | CA |
| 2019-11-22 | 805-638-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | SIMIVALLEY | CA |
| 2015-10-06 | 805-638-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SIMIVALLEY | CA |
| 2015-09-22 | 805-638-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SIMIVALLEY | CA |
| 2015-10-22 | 805-638-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SIMIVALLEY | CA |
| 2015-12-07 | 805-638-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SIMIVALLEY | CA |
| 2016-08-18 | 805-638-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SIMIVALLEY | CA |
| 2017-08-14 | 805-638-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SIMIVALLEY | CA |
| 2016-09-13 | 805-638-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SIMIVALLEY | CA |
| 2016-09-14 | 805-638-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | SIMIVALLEY | 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.