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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 76 天
颁发给homesecuritysystems.com.au
颁发者YE2（Let's Encrypt）
生效时间2026-09-29 23:14
到期时间2026-12-28 23:14
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0679EC2AA392503F6E8A78CDA4AFAF157E10
自签名否

证书覆盖的域名

共 90 个
*.alumni.hotelschool.com.au *.autodiscover.hostbud.com.au *.autodiscover.huaweihub.com.au *.banner.hotelschool.com.au *.catalog.hotelschool.com.au *.cpanel.hostbud.com.au *.cpcalendars.hostbud.com.au *.cpcontacts.hostbud.com.au *.dev.homesecuritysystems.com.au *.eromchat.com *.flow.homesecuritysystems.com.au *.hobartseo.au *.holidayrental.com.au *.homeguard.com.au *.homemassages.com.au *.homeownerleads.com.au *.homesecuritysystems.com.au *.homeshare.com.au *.homoeopath.au *.hospitalfitouts.com.au *.hospitalitywarehouse.com.au *.hospitalnews.com.au *.hostbud.com.au *.hostmaster.hotelschool.com.au *.hostmaster.housecall.com.au *.hotelnewyork.au *.hotelsales.com.au *.hotelschool.com.au *.housecall.com.au *.huaweihub.com.au *.huaweihub.huaweihub.com.au *.hugeboobs.au *.hypnotherapists.au *.lib.hotelschool.com.au *.library.hotelschool.com.au *.lms.hotelschool.com.au *.magento.homesecuritysystems.com.au *.mail.huaweihub.com.au *.old.homesecuritysystems.com.au *.prod.hotelschool.com.au *.qa.homesecuritysystems.com.au *.random.homesecuritysystems.com.au *.random.hotelnewyork.au *.shop.homesecuritysystems.com.au *.ssb.hotelschool.com.au *.test.homesecuritysystems.com.au *.webmail.hostbud.com.au *.webmail.hotelschool.com.au *.wildcard.hobartseo.au *.wildcard.holidayrental.com.au *.wildcard.homeguard.com.au *.wildcard.homemassages.com.au *.wildcard.homeownerleads.com.au *.wildcard.homesecuritysystems.com.au *.wildcard.homeshare.com.au *.wildcard.homoeopath.au *.wildcard.hospitalfitouts.com.au *.wildcard.hospitalitywarehouse.com.au *.wildcard.hospitalnews.com.au *.wildcard.hostbud.com.au *.wildcard.hotelnewyork.au *.wildcard.hotelsales.com.au *.wildcard.hotelschool.com.au *.wildcard.housecall.com.au *.wildcard.huaweihub.com.au *.wildcard.hugeboobs.au *.wildcard.hypnotherapists.au *.ww25.homesecuritysystems.com.au *.ww38.hotelnewyork.au *.www.hotelschool.com.au eromchat.com hobartseo.au holidayrental.com.au homeguard.com.au homemassages.com.au homeownerleads.com.au homesecuritysystems.com.au homeshare.com.au homoeopath.au hospitalfitouts.com.au hospitalitywarehouse.com.au hospitalnews.com.au hostbud.com.au hotelnewyork.au hotelsales.com.au hotelschool.com.au housecall.com.au huaweihub.com.au hugeboobs.au hypnotherapists.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。