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.plusstec.net · 162.241.2.192:443

Verified

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

Subject
CN=webdisk.plusstec.net
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-07T13:13:26+00:00
Expires
2027-01-05T13:13:25+00:00
Days remaining
76
Serial (hex)
0687D50EB8D257D2DADE48D7B908A237D97C
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:autoconfig.plusstec.net, DNS:autodiscover.plusstec.net, DNS:cpanel.plusstec.net, DNS:cpcalendars.plusstec.net, DNS:cpcontacts.plusstec.net, DNS:mail.plusstec.net, DNS:plusstec.net, DNS:webdisk.plusstec.net, DNS:webmail.plusstec.net, DNS:www.plusstec.net

SHA-256 fingerprint

C9:5C:67:1B:E3:64:71:05:8B:B8:33:A5:1F:72:AF:64:20:08:61:92:C7:7B:41:84:9C:BF:D0:63:B7:E2:F2:45
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
40:28:E4:35:44:06:EB:C2:C6:A9:64:AB:36:79:99:3C:63:35:C3:FA
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.plusstec.net, DNS:autodiscover.plusstec.net, DNS:cpanel.plusstec.net, DNS:cpcalendars.plusstec.net, DNS:cpcontacts.plusstec.net, DNS:mail.plusstec.net, DNS:plusstec.net, DNS:webdisk.plusstec.net, DNS:webmail.plusstec.net, DNS:www.plusstec.net
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/125.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Oct 7 14:11:56.756 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:96:70:DE:E9:AB:37:5D:33:9C:78:EE: CF:89:13:0F:EC:79:C3:07:F1:0F:F7:DA:40:D2:22:50: 1C:40:1A:6C:5A:02:21:00:F7:DB:36:76:33:F4:71:C7: A9:19:F1:3B:6B:0F:08:67:EB:C0:6D:B4:E7:E3:1A:A4: E6:A9:57:A9:98:73:C0:2C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:8D:D7:91:D1:CD:05:49:ED:B6:03:55:D6: 06:B6:4F:AD:30:DB:71:FE:78:8F:0F:C7:C8:FB:C4:B1 Timestamp : Oct 7 14:11:57.579 2026 GMT Extensions: 00:00:05:00:06:3D:72:09 Signature : ecdsa-with-SHA256 30:45:02:20:3F:A8:97:16:AB:5A:D8:02:A8:D7:3C:9B: 87:60:6C:19:36:67:D5:32:59:E3:5D:CF:CE:36:2A:9E: 74:89:F7:66:02:21:00:95:D4:E8:8A:25:BF:8C:1E:65: 09:63:36:9A:A4:BC:23:96:A1:5A:12:51:D4:7E:A3:FC: A3:F2:C2:FB:FC:EA:80
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-20T21:19:48+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
683
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
2144
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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