gistfile1.txt

Look it up yourself — 3 ways
1. crt.sh (Certificate Transparency logs)
https://crt.sh/?q=cust001.api.standardchartered.com
This will show all certs ever issued for that hostname, including issuer, validity dates, SANs, and CT log timestamps.
2. OpenSSL from your workstation
bashecho | openssl s_client \
  -connect <domain>:443 \
  -servername <domain> 2>/dev/null \
  | openssl x509 -noout -text
This gives you the full cert — subject, issuer, SANs, validity period, key algorithm, and signature.
3. Quick summary (just expiry + issuer)
bashecho | openssl s_client \
  -connect <domain>:443 \
  -servername <domain> 2>/dev/null \
  | openssl x509 -noout \
  -subject -issuer -dates -fingerprint -ext subjectAltName