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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 77 天
颁发给9s.com.au
颁发者YE1（Let's Encrypt）
生效时间2026-09-30 00:13
到期时间2026-12-29 00:13
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06E860B9B46DAE50EA814C14688825EE906C
自签名否

证书覆盖的域名

共 89 个
*.360bizsolutions.a2zhost.com.au *.9s.com.au *.a2zhost.com.au *.a2zmasters.a2zhost.com.au *.aacp.com.au *.abarth.com.au *.abbeydigital.com.au *.accommodationesperance.com.au *.accommodationtamworth.com.au *.acountingmelbourne.com.au *.ad-plug.be *.adelaidesbest.com.au *.admin.abarth.com.au *.adultwebmaster.com.au *.airfresheners.com.au *.assessment.aacp.com.au *.autodiscover.a2zhost.com.au *.ci.a2zhost.com.au *.community.aacp.com.au *.comy.a2zhost.com.au *.cpanel.a2zhost.com.au *.cpcalendars.a2zhost.com.au *.cpcontacts.a2zhost.com.au *.dashboard.a2zhost.com.au *.demo.a2zhost.com.au *.e.abarth.com.au *.email.aacp.com.au *.email.abarth.com.au *.enews.aacp.com.au *.hosting.a2zhost.com.au *.integration.a2zhost.com.au *.m.abbeydigital.com.au *.mail.a2zhost.com.au *.mail.adelaidesbest.com.au *.moodle.aacp.com.au *.my.a2zhost.com.au *.mypornstarblwww.aacp.com.au *.ns2.accommodationtamworth.com.au *.parties.abarth.com.au *.portal.aacp.com.au *.prod.a2zhost.com.au *.report.a2zhost.com.au *.reporting.a2zhost.com.au *.shop.abarth.com.au *.status.a2zhost.com.au *.test.a2zhost.com.au *.test.aacp.com.au *.webdisk.a2zhost.com.au *.webmail.a2zhost.com.au *.webmail.abarth.com.au *.wildcard.9s.com.au *.wildcard.a2zhost.com.au *.wildcard.abarth.com.au *.wildcard.abbeydigital.com.au *.wildcard.adelaidesbest.com.au *.wildcard.adultwebmaster.com.au *.ww.abbeydigital.com.au *.ww11.9s.com.au *.ww11.accommodationesperance.com.au *.ww11.accommodationtamworth.com.au *.ww11.airfresheners.com.au *.ww16.a2zhost.com.au *.ww16.aacp.com.au *.ww16.abarth.com.au *.ww16.abbeydigital.com.au *.ww16.acountingmelbourne.com.au *.ww16.ad-plug.be *.ww16.adelaidesbest.com.au *.ww16.adultwebmaster.com.au *.ww25.9s.com.au *.ww25.aacp.com.au *.ww25.abarth.com.au *.ww25.abbeydigital.com.au *.ww25.adelaidesbest.com.au *.ww38.abarth.com.au *.www.abbeydigital.com.au *.www.adelaidesbest.com.au 9s.com.au a2zhost.com.au aacp.com.au abarth.com.au abbeydigital.com.au accommodationesperance.com.au accommodationtamworth.com.au acountingmelbourne.com.au ad-plug.be adelaidesbest.com.au adultwebmaster.com.au airfresheners.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。