结果由实时握手读取
| 证书状态 | 剩余 77 天 |
| 颁发给 | perimeter.com.au |
| 颁发者 | YE2（Let's Encrypt） |
| 生效时间 | 2026-09-27 00:28 |
| 到期时间 | 2026-12-26 00:28 |
| 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 | 0602EE840FC8535E38E7954506E80B7B0D05 |
| 自签名 | 否 |
证书覆盖的域名
*.047ad958-ee7a-4859-b4af-7dc4c85ab610.pubmed.com.au
*.220-tiki.perimeter.com.au
*.7f844462-75f1-43c7-aeff-65c53242306e.pubmed.com.au
*.8d66fe27-d710-41d6-8a54-4aebf7c10d05.pubmed.com.au
*.ac.pubmed.com.au
*.acc.pubmed.com.au
*.au.perimeter.com.au
*.backend.plaque.com.au
*.bc68efd0-1b31-4c84-9d5f-071fd988d61c.pubmed.com.au
*.bg.pubmed.com.au
*.bi.plaque.com.au
*.bitwarden.pubmed.com.au
*.brightworld.pubmed.com.au
*.career.pubmed.com.au
*.centralus.pubmed.com.au
*.comune.picket.com.au
*.correo.nutra.com.br
*.de.pubmed.com.au
*.demo.gigantes.com.br
*.dev.pubmed.com.au
*.develop.pubmed.com.au
*.eclass.pubmed.com.au
*.email.nutra.com.br
*.email.pubmed.com.au
*.enter.pubmed.com.au
*.es-staging.pubmed.com.au
*.f.pubmed.com.au
*.facebook.pubmed.com.au
*.files.pubmed.com.au
*.flowiseai.picket.com.au
*.fw.producer.com.au
*.gigantes.com.br
*.gw.picket.com.au
*.host.piazza.com.au
*.images.producer.com.au
*.interna.nutra.com.br
*.mail.nutra.com.br
*.mail.producer.com.au
*.mail02.gigantes.com.br
*.mail12.picket.com.au
*.mail8.pubmed.com.au
*.mailbox.payrollsolutions.com.au
*.mailer.producer.com.au
*.mailgate.picket.com.au
*.mailserver.perimeter.com.au
*.map.pubmed.com.au
*.maps.pubmed.com.au
*.ms1.gigantes.com.br
*.mta1.perimeter.com.au
*.mta1.piazza.com.au
*.mx0.nutra.com.br
*.mx0.payrollsolutions.com.au
*.mx0.perimeter.com.au
*.mx0.piazza.com.au
*.mx0.pubmed.com.au
*.mx01.payrollsolutions.com.au
*.mx01.plaque.com.au
*.mx01.producer.com.au
*.mx02.gigantes.com.br
*.mx02.picket.com.au
*.nutra.com.br
*.painel.nutra.com.br
*.payrollsolutions.com.au
*.perimeter.com.au
*.piazza.com.au
*.picket.com.au
*.plaque.com.au
*.producer.com.au
*.pubmed.com.au
*.random.gigantes.com.br
*.sitemaps.pubmed.com.au
*.smtp01.perimeter.com.au
*.talento.gigantes.com.br
*.webmail.nutra.com.br
*.wildcard.perimeter.com.au
*.ww16.nutra.com.br
*.ww17.pubmed.com.au
*.ww25.nutra.com.br
*.ww25.pubmed.com.au
*.ww38.pubmed.com.au
gigantes.com.br
nutra.com.br
payrollsolutions.com.au
perimeter.com.au
piazza.com.au
picket.com.au
plaque.com.au
producer.com.au
pubmed.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。