结果由实时握手读取
| 证书状态 | 剩余 77 天 |
| 颁发给 | wkda.at |
| 颁发者 | YE2（Let's Encrypt） |
| 生效时间 | 2026-09-30 02:14 |
| 到期时间 | 2026-12-29 02:14 |
| 是否覆盖当前域名 | 是 |
| 证书链 | 0 级（可能缺少中间证书） |
| 签名算法 | ecdsa-with-SHA384 |
| 序列号 | 06AB63C953C5A7D96CE559E53201B634E424 |
| 自签名 | 否 |
证书覆盖的域名
*.25d65ed1-003b-49e0-a5a0-6798aa9bd9ec.yourbookkeeper.com.au
*.2bbbe48b-67c6-4520-a941-265b3de82531.yourbookkeeper.com.au
*.84497d92-dde6-4e85-866f-84c583bdd0b8.yielded.com.au
*.a-preprod-ecs.wkda.at
*.a.wkda.at
*.admim.wkda.at
*.admin.wkda.at
*.admind.wkda.at
*.api.weburn.it
*.auto.wkda.at
*.careers.wkda.at
*.classifieds.wkda.at
*.hostmaster.weburn.it
*.img2.wkda.at
*.m.yourbookkeeper.com.au
*.mail-img.wkda.at
*.pa.wkda.at
*.pa2.wkda.at
*.parked.yourbookkeeper.com.au
*.preprod.wkda.at
*.preview.wkda.at
*.preview.yourbookkeeper.com.au
*.random.yielded.com.au
*.random.yjm.com.au
*.random.yourbookkeeper.com.au
*.reprod.wkda.at
*.smtpmail.yva.com.au
*.test.yva.com.au
*.weburn.it
*.wildcard.wkda.at
*.wildcard.yielded.com.au
*.wildcard.yiu.com.au
*.wildcard.youngbuck.au
*.wildcard.yourbookkeeper.com.au
*.wildcard.yournumber.com.au
*.wildcard.yva.com.au
*.wkda.at
*.ww1.wkda.at
*.ww16.wkda.at
*.ww16.yjm.com.au
*.ww16.yourbookkeeper.com.au
*.ww16.yournumber.com.au
*.ww16.yva.com.au
*.ww17.wkda.at
*.ww17.youngbuck.au
*.ww17.yourbookkeeper.com.au
*.ww17.yournumber.com.au
*.ww17.yva.com.au
*.ww25.wkda.at
*.ww25.yielded.com.au
*.ww25.yiu.com.au
*.ww25.yourbookkeeper.com.au
*.ww25.yourdesignhere.com.au
*.ww25.yourroster.au
*.ww25.yva.com.au
*.ww25.zealousdigital.com.au
*.ww38.wkda.at
*.ww38.yielded.com.au
*.ww38.yiu.com.au
*.ww38.yjm.com.au
*.ww38.youngbuck.au
*.ww38.yourbookkeeper.com.au
*.ww38.yourdesignhere.com.au
*.ww38.yournumber.com.au
*.ww38.yourroster.au
*.ww38.yva.com.au
*.ww38.zealousdigital.com.au
*.yielded.com.au
*.yiu.com.au
*.yjm.com.au
*.youngbuck.au
*.yourbookkeeper.com.au
*.yourdesignhere.com.au
*.yournumber.com.au
*.yourroster.au
*.yva.com.au
*.zealousdigital.com.au
weburn.it
wkda.at
yielded.com.au
yiu.com.au
yjm.com.au
youngbuck.au
yourbookkeeper.com.au
yourdesignhere.com.au
yournumber.com.au
yourroster.au
yva.com.au
zealousdigital.com.au
带
* 的是通配符证书，只覆盖同一级子域名（如 *.example.com 不含 a.b.example.com）常见问题
SSL 证书有什么用？
SSL / TLS 证书为浏览器与服务器之间的通信加密，同时证明「这个站点确实属于它声称的域名」。地址栏的锁形图标、以及 HTTPS 协议，都来自证书。
没有证书或证书无效时，浏览器会拦截并显示安全警告，用户无法正常访问，搜索引擎也会降低信任。
证书到期会怎样？
证书一旦过期，访客打开网站会看到「您的连接不是私密连接」这类整页警告，需要手动点「继续访问」才能进入，绝大多数用户会直接离开。
因此证书一般提前 30 天左右续期。本站结果页按剩余天数标色：绿色为 30 天以上，黄色为 7～30 天，红色为 7 天以内或已过期。
什么是证书链？为什么提示缺少中间证书？
证书由「根证书 → 中间证书 → 服务器证书」三级签发的链条构成。浏览器内置了根证书，但中间证书需要服务器一并下发。
如果服务器只下发了自己的证书、漏掉中间证书，部分浏览器（尤其是较旧的 Android 与部分移动端）会报「证书不受信任」。结果页的「证书链」若只有 1 级，通常就是这种情况。
一张证书能保护多个域名吗？
可以。证书通过 SAN（Subject Alternative Name）扩展同时列出多个域名，称为多域名证书；也可以使用通配符证书保护同一级的所有子域名。
通配符 *.example.com 只覆盖 a.example.com 这一级，不覆盖 a.b.example.com，也不覆盖根域名 example.com 本身，配置时需注意。
为什么查不到证书？
常见原因：该站点没有开启 HTTPS；只在 443 之外的端口提供 HTTPS；防火墙屏蔽了海外或本机访问；服务器未按 SNI 返回对应证书。
本站的检测是从服务器直接发起 TLS 握手读取证书，若目标只允许特定地区访问，结果可能与你在浏览器中看到的不一致。