etcai.com 域名历史
etcai.com 的建站历史：共收录 63 条网页存档快照，最早可追溯至 1999-05-08，并持续记录 Whois、ICP 备案、DNS 解析与 SSL 证书变更。
建站快照概览
| 快照日期 | 标题 | 状态 |
|---|---|---|
| 1999-05-08 | Electricity and Electronics Training Home | 200 |
| 2001-03-31 | Electricity and Electronics Training Home | 200 |
| 2002-07-26 | （暂无标题） | 200 |
| 2003-05-25 | Electricity and Electronics Training Home | 200 |
| 2004-01-21 | Electricity and Electronics Training Home | 200 |
| 2004-12-09 | Electricity and Electronics Training Home | 200 |
| 2005-09-01 | Electricity and Electronics Training Home | 200 |
| 2006-06-18 | Electricity and Electronics Training Home | 200 |
| 2007-05-23 | Electricity and Electronics Training Home | 200 |
| 2008-02-09 | Electricity and Electronics Training Home | 200 |
| 2008-12-14 | Electricity and Electronics Training Home | 200 |
| 2010-01-14 | Electricity and Electronics Training Home | 200 |
| 2010-11-14 | Electricity and Electronics Training Home | 200 |
| 2011-08-10 | Electricity and Electronics Training Home | 200 |
| 2012-04-02 | Electricity and Electronics Training Home | 200 |
| 2012-12-19 | Electricity and Electronics Training Home | 200 |
| 2013-10-19 | Electricity and Electronics Training Home | 200 |
| 2014-06-01 | Electricity and Electronics Training Home | 200 |
| 2015-02-03 | Electricity and Electronics Training Home | 200 |
| 2015-10-22 | Electricity and Electronics Training Home | 200 |
| 2016-05-24 | Electricity and Electronics Training Home | 200 |
| 2017-05-13 | Electricity and Electronics Training Home | 200 |
| 2018-01-02 | Electricity and Electronics Training Home | 200 |
| 2018-09-09 | Learn Electronics Technology | 200 |
| 2019-05-16 | Learn Electronics Technology | 200 |
| 2019-12-16 | （暂无标题） | 302 |
| 2020-07-10 | （暂无标题） | 302 |
| 2021-12-01 | （暂无标题） | 301 |
| 2023-01-27 | （暂无标题） | 200 |
| 2024-12-02 | （暂无标题） | 200 |
| 2025-10-18 | （暂无标题） | 200 |
| 2026-09-18 | （暂无标题） | 301 |
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