DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

mail.huicast.com · 185.244.164.201:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=mail.huicast.com
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-28T21:08:52+00:00
Expires
2026-12-27T21:08:51+00:00
Days remaining
55
Serial (hex)
05782DFC4A3C17DF6B6C68C9C38DD937796D
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:mail.huicast.com

SHA-256 fingerprint

5D:E1:16:CA:5D:DA:48:7B:24:24:7F:84:AF:7A:95:B6:CD:1A:A4:9A:2C:72:9A:1C:8E:F2:BE:DE:BB:1A:8E:CD
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
D4:DF:E9:65:C5:5B:1D:E2:C9:9F:A5:5A:EB:AC:18:D4:34:0C:C2:B2
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:mail.huicast.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/110.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Sep 28 22:07:22.861 2026 GMT Extensions: 00:00:05:00:17:49:9C:95 Signature : ecdsa-with-SHA256 30:45:02:20:05:D0:C1:6D:F5:BE:67:18:1D:96:59:67: 67:85:CA:FD:5F:A3:5C:FB:89:E3:FE:11:A1:45:92:59: 49:1E:0F:7E:02:21:00:E9:DC:5C:73:FB:4F:38:42:00: 18:E8:04:0C:D4:55:92:30:B7:87:62:FD:D4:58:8C:64: C6:80:65:45:A2:DC:4F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : Sep 28 22:07:22.825 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:2B:44:6F:32:B4:C9:25:5C:0A:AA:25:E4: E5:25:B2:EF:67:95:23:DA:B7:27:2A:17:1E:F8:0B:30: FC:2B:00:D7:02:20:7C:50:1B:01:15:7A:5E:C7:39:BB: 28:EE:3E:19:69:8A:C5:69:F6:77:41:BC:4D:F2:9D:D1: C5:D6:CF:03:5B:5C
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-02T19:21:48+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
670
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2131
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

Registration / WHOIS →DNS records →