~/tools / ssl-checker

SSL Checker

Check SSL certificate expiry, chain validity, TLS version and cipher. Catches expired certs, weak crypto and chain issues.

>
[ OK ] Valid for 61 more days.
── output ─────
Issued to
*.google.com
Issued by
WR2
Valid from
2026-03-30
Valid until
2026-06-22 (61 days)
TLS version
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Key
EC (prime256v1) · 256 bit
Signature
sha256WithRSAEncryption
Forward secrecy
yes
Self-signed
no
Must-staple
no
SHA-256 fingerprint
99:E1:4B:50:60:0E:C3:94:CB:2C:15:85:8E:68:FF:F1:9C:B7:0C:9E:E0:8C:B7:29:52:18:12:81:67:C4:38:23
Serial
E6A2DE36B18B40FD10822FFEEA55FA16
subject_alt_names · 137
*.google.com *.appengine.google.com *.bdn.dev *.origin-test.bdn.dev *.cloud.google.com *.crowdsource.google.com *.datacompute.google.com *.google.ca *.google.cl *.google.co.in *.google.co.jp *.google.co.uk *.google.com.ar *.google.com.au *.google.com.br *.google.com.co *.google.com.mx *.google.com.tr *.google.com.vn *.google.de *.google.es *.google.fr *.google.hu *.google.it *.google.nl *.google.pl *.google.pt *.googleapis.cn *.gstatic.cn *.gstatic-cn.com googlecnapps.cn *.googlecnapps.cn googleapps-cn.com *.googleapps-cn.com gkecnapps.cn *.gkecnapps.cn googledownloads.cn *.googledownloads.cn recaptcha.net.cn *.recaptcha.net.cn recaptcha-cn.net *.recaptcha-cn.net widevine.cn *.widevine.cn ampproject.org.cn *.ampproject.org.cn ampproject.net.cn *.ampproject.net.cn google-analytics-cn.com *.google-analytics-cn.com googleadservices-cn.com *.googleadservices-cn.com googlevads-cn.com *.googlevads-cn.com googleapis-cn.com *.googleapis-cn.com googleoptimize-cn.com *.googleoptimize-cn.com doubleclick-cn.net *.doubleclick-cn.net *.fls.doubleclick-cn.net *.g.doubleclick-cn.net doubleclick.cn *.doubleclick.cn *.fls.doubleclick.cn *.g.doubleclick.cn dartsearch-cn.net *.dartsearch-cn.net googletraveladservices-cn.com *.googletraveladservices-cn.com googletagservices-cn.com *.googletagservices-cn.com googletagmanager-cn.com *.googletagmanager-cn.com googlesyndication-cn.com *.googlesyndication-cn.com *.safeframe.googlesyndication-cn.com app-measurement-cn.com *.app-measurement-cn.com gvt1-cn.com *.gvt1-cn.com gvt2-cn.com *.gvt2-cn.com 2mdn-cn.net *.2mdn-cn.net googleflights-cn.net *.googleflights-cn.net admob-cn.com *.admob-cn.com *.gemini.cloud.google.com googlesandbox-cn.com *.googlesandbox-cn.com *.safenup.googlesandbox-cn.com *.gstatic.com *.metric.gstatic.com *.gvt1.com *.gcpcdn.gvt1.com *.gvt2.com *.gcp.gvt2.com *.url.google.com *.youtube-nocookie.com *.ytimg.com ai.android android.com *.android.com *.flash.android.com g.cn *.g.cn g.co *.g.co goo.gl www.goo.gl google-analytics.com *.google-analytics.com google.com googlecommerce.com *.googlecommerce.com ggpht.cn *.ggpht.cn urchin.com *.urchin.com youtu.be youtube.com *.youtube.com music.youtube.com *.music.youtube.com youtubeeducation.com *.youtubeeducation.com youtubekids.com *.youtubekids.com yt.be *.yt.be android.clients.google.com *.android.google.cn *.chrome.google.cn *.developers.google.cn *.aistudio.google.com
certificate_chain · 3 certs
[ leaf ]*.google.com
61 days left
issuer: WR2
2026-03-30 → 2026-06-22
[ inter ]WR2
1035 days left
issuer: GTS Root R1
2023-12-13 → 2029-02-20
[ inter ]GTS Root R1
646 days left
issuer: GlobalSign Root CA
2020-06-19 → 2028-01-28
// Save google.com → we'll run this daily and alert on changes. /signup →