planbookedu.com 域名历史
planbookedu.com 的建站历史：共收录 43 条网页存档快照，最早可追溯至 2016-05-16，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 |
|---|---|---|
| 2016-05-16 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2019-06-19 | （暂无标题） | 301 |
| 2019-09-25 | （暂无标题） | 301 |
| 2019-10-01 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2019-12-30 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2020-03-22 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2020-06-21 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2020-12-20 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2021-03-21 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2021-09-19 | （暂无标题） | 301 |
| 2021-10-16 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2022-01-30 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2022-04-26 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2022-04-30 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2022-10-22 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2023-01-29 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2023-04-23 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2023-10-26 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2024-02-01 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2025-03-21 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2025-10-29 | Free Online Lesson Planbook Software for Teachers | 200 |
| 2025-12-20 | Free Online Lesson Planbook Software for Teachers | 200 |
SSL 证书历史
| 域名 | 签发机构 | 生效 | 到期 | 观测次数 |
|---|---|---|---|---|
| *.planbookedu.com | C=US, O=Let's Encrypt, CN=YR1 | 2026-10-31 | 2027-01-29 | 2 |
| *.planbookedu.com | C=US, O=Let's Encrypt, CN=YR2 | 2026-09-01 | 2026-11-30 | 1 |
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