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

signdomains.com · 190.92.174.35:443

Verified

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

Subject
CN=cpcontacts.signdomains.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-04T02:52:35+00:00
Expires
2026-12-03T02:52:34+00:00
Days remaining
63
Serial (hex)
06FEA30A57E13C3A0A701623CF381FDA4DD4
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:autoconfig.signdomains.com, DNS:autodiscover.signdomains.com, DNS:cpanel.signdomains.com, DNS:cpcalendars.signdomains.com, DNS:cpcontacts.signdomains.com, DNS:mail.signdomains.com, DNS:signdomains.com, DNS:webdisk.signdomains.com, DNS:webmail.signdomains.com, DNS:www.signdomains.com

SHA-256 fingerprint

92:C0:E6:5B:00:F2:DB:34:23:29:62:49:96:11:D4:9A:FF:AE:EE:C6:54:2C:A4:33:AD:BA:C9:7E:02:DD:91:DF
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
4A:D0:2E:7E:0B:FB:B0:08:43:7E:5E:B8:DD:44:65:0E:2E:CF:6B:2A
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:autoconfig.signdomains.com, DNS:autodiscover.signdomains.com, DNS:cpanel.signdomains.com, DNS:cpcalendars.signdomains.com, DNS:cpcontacts.signdomains.com, DNS:mail.signdomains.com, DNS:signdomains.com, DNS:webdisk.signdomains.com, DNS:webmail.signdomains.com, DNS:www.signdomains.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/85.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Sep 4 03:51:05.674 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:FC:66:1F:28:70:EE:FA:12:F9:79:62: DD:DA:D6:CC:59:A8:11:6A:44:0D:2A:AC:E2:BB:D4:51: 0E:20:97:B3:97:02:21:00:85:8D:C3:4E:CD:3B:86:CF: 98:D8:7C:1A:1C:09:70:00:5D:26:B1:C8:EB:A0:CB:B7: 6D:DB:77:D0:FB:62:8A:EA Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A8:26:CB:E3:0A:C6:35:12:46:53:3F:E0:65:F1:4F:19: D9:6E:19:08:13:C4:1D:D9:6D:79:00:B3:12:3C:55:27 Timestamp : Sep 4 03:51:06.049 2026 GMT Extensions: 00:00:05:00:2B:B6:68:64 Signature : ecdsa-with-SHA256 30:45:02:20:62:5F:B0:C2:2E:23:A9:69:18:5B:25:AD: 48:DD:ED:A3:E3:E4:52:4D:5A:58:E0:D6:E4:57:0E:F7: 75:A3:D8:D3:02:21:00:A1:56:9C:65:18:C7:46:F4:AE: 4C:40:CF:23:92:31:A6:3D:D5:61:17:ED:A3:18:78:F6: 7E:A4:D3:0A:75:31:B1
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-30T12:11:19+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
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
703
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
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
2164
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

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