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

hamyar.net · 178.173.171.82:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed
The certificate has expired.

Certificate verification failed

Subject
CN=hamyar.net
Issuer
C=US O=Let's Encrypt CN=R11
Valid from
2024-07-14T11:27:29+00:00
Expires
2024-10-12T11:27:28+00:00
Days remaining
-753
Serial (hex)
036095C0AC68A5242882E32A851DBFCA31FC
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:hamyar.net, DNS:webmail.hamyar.net, DNS:www.hamyar.net

SHA-256 fingerprint

77:28:DF:DD:23:34:4A:A8:F5:42:7D:23:C1:CA:88:B9:31:CC:3B:A8:F1:7E:6C:52:1A:80:08:3C:42:E9:5A:F5
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
72:20:E8:4B:E3:27:CF:A2:68:96:8F:E0:61:1C:DE:AF:7E:08:AA:DE
authorityKeyIdentifier
C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
OCSP - URI:http://r11.o.lencr.org CA Issuers - URI:http://r11.i.lencr.org/
subjectAltName
DNS:hamyar.net, DNS:webmail.hamyar.net, DNS:www.hamyar.net
certificatePolicies
Policy: 2.23.140.1.2.1
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 19:98:10:71:09:F0:D6:52:2E:30:80:D2:9E:3F:64:BB: 83:6E:28:CC:F9:0F:52:8E:EE:DF:CE:4A:3F:16:B4:CA Timestamp : Jul 14 12:27:30.135 2024 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:9C:2C:E1:B4:57:DC:35:A3:7D:9D:9F: 4C:DE:E1:69:FE:E8:E2:D7:86:E6:57:DB:1B:5B:40:50: 2B:F6:45:DB:7D:02:21:00:DB:71:F5:B0:35:29:9C:03: 15:91:5F:D3:8A:7E:8D:6B:82:C0:6C:B2:61:4D:3D:A9: BA:81:3E:EA:25:2D:8C:44 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 76:FF:88:3F:0A:B6:FB:95:51:C2:61:CC:F5:87:BA:34: B4:A4:CD:BB:29:DC:68:42:0A:9F:E6:67:4C:5A:3A:74 Timestamp : Jul 14 12:27:30.147 2024 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:7B:71:52:89:ED:B4:9E:EE:2D:9A:C7:C5: 67:79:E8:A4:4F:4E:C7:E2:6C:2C:6A:BC:71:D0:8A:98: AB:09:83:FF:02:20:2C:54:71:24:C0:45:2C:23:D7:5F: 18:DB:78:D1:98:2E:CB:7D:3B:79:83:4C:82:19:B3:A7: 82:E7:E5:BB:CB:B3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-04T02:18:47+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R11
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2024-03-13T00:00:00+00:00
Expires
2027-03-12T23:59:59+00:00
Days remaining
128
Serial (hex)
8A7D3E13D62F30EF2386BD29076B34F8
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

59:1E:9C:E6:C8:63:D3:A0:79:E9:FA:BE:14:78:C7:33:9A:26:B2:12:69:DD:E7:95:21:13:61:02:4A:E3:1A:44
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
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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