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

TLSv1.2

asdasd.it · 195.47.199.22:443

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

Certificate verification failed

Subject
CN=*.asdasd.it
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-03T19:27:13+00:00
Expires
2026-12-02T19:27:12+00:00
Days remaining
68
Serial (hex)
05484BA770321685480DB4491347B1ADAE4F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.asdasd.it, DNS:asdasd.it

SHA-256 fingerprint

12:FC:B4:37:92:80:A6:3D:B3:E7:37:50:CD:52:34:01:50:C7:FF:19:F7:05:15:8F:C8:21:40:B5:46:DD:D4:9D
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
81:60:E5:A6:B2:B1:C4:E7:CD:4F:8F:CD:E6:A0:3F:CD:ED:0F:1D:5E
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:*.asdasd.it, DNS:asdasd.it
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/80.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9: 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A Timestamp : Sep 3 20:25:44.032 2026 GMT Extensions: 00:00:05:00:2D:11:36:56 Signature : ecdsa-with-SHA256 30:44:02:20:5B:7B:48:CB:04:9F:29:C8:F0:6B:D9:02: 89:16:AF:C4:29:54:CD:6C:6B:36:BA:FC:E6:CB:A1:3D: 39:46:BA:18:02:20:64:72:02:D0:B2:CC:2F:F4:21:72: 12:04:02:31:DD:4A:A1:7E:86:8B:8F:70:B1:86:A7:02: B8:4C:17:5B:79:8E Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AF:67:88:3B:57:B0:4E:DD:8F:A6:D9:7E:F6:2E:A8:EB: 81:0A:C7:71:60:F0:24:5E:55:D6:0C:2F:E7:85:87:3A Timestamp : Sep 3 20:25:43.871 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:FA:3D:5D:77:25:74:65:1A:67:97:03: 95:C3:F3:A6:02:05:81:0C:B4:33:8B:0B:98:6A:5F:5F: E1:ED:4E:79:D6:02:20:02:E3:47:55:6C:C5:77:9A:17: CD:F8:81:10:B6:8B:EB:68:CE:03:6B:B1:85:8D:0C:48: B5:21:04:91:10:DE:17
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-09-25T02:34:03+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R3
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2020-09-04T00:00:00+00:00
Expires
2025-09-15T16:00:00+00:00
Days remaining
-375
Serial (hex)
912B084ACF0C18A753F6D62E25A75F5A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

67:AD:D1:16:6B:02:0A:E6:1B:8F:5F:C9:68:13:C0:4C:2A:A5:89:96:07:96:86:55:72:A3:C7:E7:37:61:3D:FD
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
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
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/
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=Internet Security Research Group CN=ISRG Root X1
Issuer
O=Digital Signature Trust Co. CN=DST Root CA X3
Valid from
2021-01-20T19:14:03+00:00
Expires
2024-09-30T18:14:03+00:00
Days remaining
-725
Serial (hex)
4001772137D4E942B8EE76AA3C640AB7
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

6D:99:FB:26:5E:B1:C5:B3:74:47:65:FC:BC:64:8F:3C:D8:E1:BF:FA:FD:C4:C2:F9:9B:9D:47:CF:7F:F1:C2:4F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Certificate Sign, CRL Sign
authorityInfoAccess
CA Issuers - URI:http://apps.identrust.com/roots/dstrootcax3.p7c
authorityKeyIdentifier
C4:A7:B1:A4:7B:2C:71:FA:DB:E1:4B:90:75:FF:C4:15:60:85:89:10
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1 CPS: http://cps.root-x1.letsencrypt.org
crlDistributionPoints
Full Name: URI:http://crl.identrust.com/DSTROOTCAX3CRL.crl
subjectKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
-----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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