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.internetprovider.ch · 185.119.104.56:443

Verified
The certificate expires within 30 days.

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

Subject
CN=mail.internetprovider.ch
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-07-24T14:35:00+00:00
Expires
2026-10-22T14:34:59+00:00
Days remaining
29
Serial (hex)
05B8822FD155928E6545EAD7DD28C9A52D96
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.baanpho-thaiimbiss.ch, DNS:autoconfig.bolliger-network-solutions.ch, DNS:autoconfig.bolligerns.ch, DNS:autoconfig.gecc0.net, DNS:autoconfig.internetprovider.ch, DNS:autoconfig.internetworxs.ch, DNS:autoconfig.protopapa.net, DNS:autoconfig.ravana.ch, DNS:autodiscover.baanpho-thaiimbiss.ch, DNS:autodiscover.bolliger-network-solutions.ch, DNS:autodiscover.bolligerns.ch, DNS:autodiscover.gecc0.net, DNS:autodiscover.internetprovider.ch, DNS:autodiscover.internetworxs.ch, DNS:autodiscover.protopapa.net, DNS:autodiscover.ravana.ch, DNS:mail.bolligerns.ch, DNS:mail.internetprovider.ch, DNS:mail.ravana.ch

SHA-256 fingerprint

46:FC:16:66:E0:DA:D6:67:8E:7A:CB:9B:71:1C:46:EC:84:20:56:4A:72:E3:E9:FA:32:E7:89:BD:B9:70:84:2C
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
81:AD:DD:65:E4:2A:3C:67:0F:42:F1:93:8B:D2:C0:A9:59:E8:27:25
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.baanpho-thaiimbiss.ch, DNS:autoconfig.bolliger-network-solutions.ch, DNS:autoconfig.bolligerns.ch, DNS:autoconfig.gecc0.net, DNS:autoconfig.internetprovider.ch, DNS:autoconfig.internetworxs.ch, DNS:autoconfig.protopapa.net, DNS:autoconfig.ravana.ch, DNS:autodiscover.baanpho-thaiimbiss.ch, DNS:autodiscover.bolliger-network-solutions.ch, DNS:autodiscover.bolligerns.ch, DNS:autodiscover.gecc0.net, DNS:autodiscover.internetprovider.ch, DNS:autodiscover.internetworxs.ch, DNS:autodiscover.protopapa.net, DNS:autodiscover.ravana.ch, DNS:mail.bolligerns.ch, DNS:mail.internetprovider.ch, DNS:mail.ravana.ch
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/23.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0: D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F Timestamp : Jul 24 15:33:30.645 2026 GMT Extensions: 00:00:05:00:0E:58:5B:01 Signature : ecdsa-with-SHA256 30:46:02:21:00:BC:91:3D:6F:4A:B1:4D:89:9F:EE:3F: BC:1E:0F:E4:C2:5C:1C:EE:71:76:DC:9A:E8:21:8E:C2: 36:E7:7A:F4:61:02:21:00:9B:24:EF:15:A7:36:7F:31: 6C:31:0F:E2:E5:A4:E2:CE:E8:1C:8F:9B:9D:5A:FD:93: BB:95:E4:70:A2:F4:FE:16 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Jul 24 15:33:30.668 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:74:FD:C7:D9:19:59:6F:EF:72:63:7A:E6: FF:94:3C:C6:2E:A9:3C:BC:05:60:E8:FF:4C:02:CD:1A: A2:C2:44:D7:02:20:4D:89:8A:BE:39:D7:6B:FA:39:81: A3:69:0E:18:72:A3:C5:0A:DE:13:DE:B9:89:D2:2A:B5: 0C:04:EB:52:7B:25
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-23T12:38:26+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
710
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
2171
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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