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SSL 证书
IP查询 › DNS记录 › WHOIS ›
结果由实时握手读取
证书状态 剩余 79 天
颁发给definition.com.au
颁发者YE1（Let's Encrypt）
生效时间2026-09-29 23:05
到期时间2026-12-28 23:05
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062B0BCF111A1F17553A47E75C3368451959
自签名否

证书覆盖的域名

共 89 个
*.admin.elegenero.com *.analytic.elegenero.com *.api.elegenero.com *.ar.dc.net.au *.autodiscover.defencedirectory.com.au *.b65wa7.eastendremodeling.com *.backend.elegenero.com *.bi.elegenero.com *.cpanel.debtless.com.au *.cpanel.defencedirectory.com.au *.dashboards.elegenero.com *.dc.net.au *.dcs.dc.net.au *.debtless.com.au *.debunk.au *.defencedirectory.com.au *.defencenews.com.au *.defencerecruitment.com.au *.defining.au *.definition.com.au *.deluge.com.au *.demo.elegenero.com *.deploy.au *.dermatologydirectory.com.au *.designwebsites.au *.desklamps.com.au *.desktops.com.au *.dev.elegenero.com *.dietcola.com.au *.eastendremodeling.com *.elegenero.com *.email.dc.net.au *.email5.dc.net.au *.gp8iy0.eastendremodeling.com *.hostmaster.defencenews.com.au *.intelligence.elegenero.com *.macq-syd-intel2-gtm01.dc.net.au *.mail.defencedirectory.com.au *.mail.defencenews.com.au *.psbo5a.eastendremodeling.com *.q1nqj0.eastendremodeling.com *.random.debunk.au *.random.defencerecruitment.com.au *.random.elegenero.com *.redash.elegenero.com *.reporting.elegenero.com *.stats.elegenero.com *.webdisk.debtless.com.au *.webdisk.defencedirectory.com.au *.webmail.debtless.com.au *.webmail.defencedirectory.com.au *.wildcard.dc.net.au *.wildcard.debtless.com.au *.wildcard.debunk.au *.wildcard.defencedirectory.com.au *.wildcard.defencenews.com.au *.wildcard.defencerecruitment.com.au *.wildcard.defining.au *.wildcard.definition.com.au *.wildcard.deluge.com.au *.wildcard.deploy.au *.wildcard.dermatologydirectory.com.au *.wildcard.designwebsites.au *.wildcard.desklamps.com.au *.wildcard.desktops.com.au *.wildcard.dietcola.com.au *.ww25.defencerecruitment.com.au *.ww38.definition.com.au *.ww38.deluge.com.au *.www.defencedirectory.com.au *.www.defencenews.com.au *.www.eastendremodeling.com dc.net.au debtless.com.au debunk.au defencedirectory.com.au defencenews.com.au defencerecruitment.com.au defining.au definition.com.au deluge.com.au deploy.au dermatologydirectory.com.au designwebsites.au desklamps.com.au desktops.com.au dietcola.com.au eastendremodeling.com elegenero.com
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。