THE CERTIFICATE BEHIND THE CONNECTION

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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

twt.it · 82.113.193.33:443

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: C=IT ST=MI L=Milano O=UNIDATA SPA CN=*.milano.twt emailAddress=it@unidata.it
Issuer: C=IT O=UNiDATA OU=PKI CN=UNiDATA Intermediate CA
Valid from: 2026-05-04T08:08:35+00:00
Expires: 2027-06-06T08:08:35+00:00
Days remaining: 243
Serial (hex): 5D07CD3ABD84408C219E105C1EF1202D64289273
Signature: RSA-SHA256
Public key: RSA 2048

Subject alternative names (SAN)

DNS:*.milano.twt, DNS:milano.twt

SHA-256 fingerprint

E2:59:17:E6:C9:66:8E:83:45:71:48:60:02:65:A8:2F:2C:EA:5C:A2:D1:FE:20:67:AE:A7:F3:1D:A8:9D:CE:B0

Certificate extensions & PEM

basicConstraints: CA:FALSE
keyUsage: Digital Signature, Non Repudiation, Key Encipherment
subjectAltName: DNS:*.milano.twt, DNS:milano.twt

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-SHA384 · Checked 2026-10-05T09:16:24+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject: C=IT O=UNiDATA OU=PKI CN=UNiDATA Intermediate CA
Issuer: C=IT O=UNiDATA OU=PKI CN=UNiDATA Root CA
Valid from: 2026-05-04T07:54:16+00:00
Expires: 2036-05-01T07:54:16+00:00
Days remaining: 3495
Serial (hex): 18A29DA435F159313FEB3316F25FBAE65A5F0667
Signature: RSA-SHA256
Public key: RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

3E:41:1A:45:91:97:24:BA:2A:7F:0F:7A:61:90:9C:7B:CE:34:4F:EC:35:C8:26:AE:36:24:F0:E5:DE:E9:AC:DA

Certificate extensions & PEM

basicConstraints: CA:TRUE, pathlen:0
keyUsage: Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier: 3F:1A:4E:43:0D:50:11:AB:BB:DE:2D:FA:02:76:3D:5A:A0:97:D8:10
authorityKeyIdentifier: 13:D1:86:04:89:4F:95:C6:03:53:A7:4C:4D:BA:FA:E0:58:E5:DA:90

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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