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

mx1.tausio.cloud · 110.34.38.29:443

Verified

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

Subject
CN=mx1.tausio.cloud
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-08-28T10:11:21+00:00
Expires
2026-11-26T10:11:20+00:00
Days remaining
35
Serial (hex)
06BFE4B9AD71A629C818960023FC960BBCEA
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.energetiq.eu, DNS:autoconfig.nexa24.de, DNS:autoconfig.tausio.cloud, DNS:autoconfig.tausiomail.de, DNS:autodiscover.energetiq.eu, DNS:autodiscover.nexa24.de, DNS:autodiscover.tausio.cloud, DNS:autodiscover.tausiomail.de, DNS:mail.nexa24.de, DNS:mail.tausio.cloud, DNS:mx1.tausio.cloud

SHA-256 fingerprint

99:D6:DF:79:82:16:88:FD:35:22:33:33:16:CC:87:F2:A5:BB:8C:89:5D:E9:98:26:A6:DD:78:BC:8F:CC:A2:A2
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
60:14:BC:CE:4A:9C:E0:A6:F2:A1:5F:8C:7B:74:8C:E2:8A:25:2F:5A
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:autoconfig.energetiq.eu, DNS:autoconfig.nexa24.de, DNS:autoconfig.tausio.cloud, DNS:autoconfig.tausiomail.de, DNS:autodiscover.energetiq.eu, DNS:autodiscover.nexa24.de, DNS:autodiscover.tausio.cloud, DNS:autodiscover.tausiomail.de, DNS:mail.nexa24.de, DNS:mail.tausio.cloud, DNS:mx1.tausio.cloud
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/107.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : Aug 28 11:09:51.272 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:48:BD:76:8C:E9:39:31:D6:F2:66:69:8E: 70:90:C3:53:B6:F5:BB:10:F1:57:CC:5A:06:C6:B1:31: 51:48:AA:9D:02:21:00:CA:3B:42:F2:AC:0A:54:4B:8F: 87:23:B3:E0:6F:94:4D:8D:76:EB:E6:50:62:86:7F:17: 50:DF:06:90:E5:5E:D5 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 : Aug 28 11:09:51.992 2026 GMT Extensions: 00:00:05:00:28:B9:1A:89 Signature : ecdsa-with-SHA256 30:45:02:20:25:63:83:BF:10:66:4D:AC:E4:6A:47:D7: B6:26:36:D8:2E:58:52:7B:19:63:A9:54:31:47:B4:E2: C3:3A:B2:D8:02:21:00:B1:10:AA:04:65:7F:22:81:50: 86:4D:C8:9A:0B:CF:F1:4D:D9:44:07:2A:DA:85:73:3D: 95:5F:19:BA:D0:F9:F3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-21T14:17:01+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
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
682
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
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
2143
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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