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

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
2026-09-23T13:13:05+00:00
Expires
2026-12-22T13:13:04+00:00
Days remaining
43
Serial (hex)
06AB784B3B8EC5508A42D6CE337A708A48A6
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

46:5E:F5:14:85:89:4D:23:54:DE:8C:91:9A:FE:AF:63:71:9A:BB:64:C2:4E:7A:2D:50:83:D2:12:02:E3:B7:0D
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/39.crl
ct_precert_scts
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 : Sep 23 14:11:35.365 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:03:55:37:87:58:B7:AB:22:0C:4D:3A:2D: E5:52:35:EB:E0:EC:A3:DB:38:3D:2F:65:E5:A8:3B:99: F1:26:16:32:02:21:00:CC:86:9D:7A:5B:7E:83:2C:A9: 47:E9:40:FC:A7:DD:37:D6:27:08:97:36:C9:E5:8F:D0: DA:C6:50:B6:67:BD:D6 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Sep 23 14:11:35.865 2026 GMT Extensions: 00:00:05:00:13:39:FD:71 Signature : ecdsa-with-SHA256 30:45:02:20:02:49:BC:32:12:29:3A:0D:01:27:39:67: F2:7C:FF:DB:EB:A4:E8:A2:76:5E:A7:B5:C8:98:81:F3: C5:6B:84:FC:02:21:00:F7:86:9D:4D:3B:2E:30:5C:B8: FB:58:F1:B6:8E:44:7B:98:83:DE:AE:87:14:83:29:B3: 73:BC:AE:37:99:A1:86
-----BEGIN CERTIFICATE-----
MIIIFjCCBv6gAwIBAgISBqt4SzuOxVCKQtbOM3pwikimMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNZUjEwHhcNMjYwOTIzMTMxMzA1WhcNMjYxMjIyMTMxMzA0WjAjMSEwHwYDVQQD
ExhtYWlsLmludGVybmV0cHJvdmlkZXIuY2gwggIiMA0GCSqGSIb3DQEBAQUAA4IC
DwAwggIKAoICAQDHoHVvKg9LYgkYiGfm7UNlK8qxy5GhozXIkgefK95NruZyeWtC
su0xEazR9V/CXmvGcTDxo0V0uH2qWk4KNk1gLuwXHHEDCFzX+l4wqzn1JXwLZv5v
kOOt9MlOXbt5Ss+F85P8vs2sGL0mk9BxnAluRaw3N99fUdSr8zbc6hpLRVzVMfIC
hvP0l2aNkWYxf1Com0KhtkeADDerEGR6EEGrEPScd2AzZsGW6hhW76uEVnJU4I3+
zNKYliDoJIawmYMhtazLuchVu3Xfj1Io7AJ2+wMgPKQ03x7YKe+dCpCyjHzlrrda
p7PK+JVk8Yjs5qphXVth2eRrzpFBNKICQkKnyUnNuKfp4P2cTxhJjPmQa+PMAWyy
5sOqXlqMZoJklrRgxjccHuG83RDMwgWhe99lt9xs+zZuaSbsGvcqyL0BAzpB1Zhw
0r2plSO4eEtvXrkAkgmNODk6abOX4JAvSQFDkUHhiqwOBHX/87O3suQ9g5M7sD4m
+FdagKSvlbLPs2UjB8uCWJBgQqrQ2LoqS7zGSMxbmlShVyVk0FqI4Pv4kh6KQduM
gMFCkPW+575DH/1UzWV6LwK1Q6wUQsSqcyd/Dutb3K0ukm34d2Tn8jqyXdnpYR9u
QNuL7ilndUovUPHV3+wu18P9AHS4ZIc6CGM8fLW0rQE3+S5vBOq15LPsmQIDAQAB
o4IEMjCCBC4wDgYDVR0PAQH/BAQDAgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMBMAwG
A1UdEwEB/wQCMAAwHQYDVR0OBBYEFIGt3WXkKjxnD0Lxk4vSwKlZ6CclMB8GA1Ud
IwQYMBaAFB8vNb5GFILNQLGueSxVePr31Gj7MDMGCCsGAQUFBwEBBCcwJTAjBggr
BgEFBQcwAoYXaHR0cDovL3lyMS5pLmxlbmNyLm9yZy8wggItBgNVHREEggIkMIIC
IIIgYXV0b2NvbmZpZy5iYWFucGhvLXRoYWlpbWJpc3MuY2iCKGF1dG9jb25maWcu
Ym9sbGlnZXItbmV0d29yay1zb2x1dGlvbnMuY2iCGGF1dG9jb25maWcuYm9sbGln
ZXJucy5jaIIUYXV0b2NvbmZpZy5nZWNjMC5uZXSCHmF1dG9jb25maWcuaW50ZXJu
ZXRwcm92aWRlci5jaIIbYXV0b2NvbmZpZy5pbnRlcm5ldHdvcnhzLmNoghhhdXRv
Y29uZmlnLnByb3RvcGFwYS5uZXSCFGF1dG9jb25maWcucmF2YW5hLmNogiJhdXRv
ZGlzY292ZXIuYmFhbnBoby10aGFpaW1iaXNzLmNogiphdXRvZGlzY292ZXIuYm9s
bGlnZXItbmV0d29yay1zb2x1dGlvbnMuY2iCGmF1dG9kaXNjb3Zlci5ib2xsaWdl
cm5zLmNoghZhdXRvZGlzY292ZXIuZ2VjYzAubmV0giBhdXRvZGlzY292ZXIuaW50
ZXJuZXRwcm92aWRlci5jaIIdYXV0b2Rpc2NvdmVyLmludGVybmV0d29yeHMuY2iC
GmF1dG9kaXNjb3Zlci5wcm90b3BhcGEubmV0ghZhdXRvZGlzY292ZXIucmF2YW5h
LmNoghJtYWlsLmJvbGxpZ2VybnMuY2iCGG1haWwuaW50ZXJuZXRwcm92aWRlci5j
aIIObWFpbC5yYXZhbmEuY2gwEwYDVR0gBAwwCjAIBgZngQwBAgEwLgYDVR0fBCcw
JTAjoCGgH4YdaHR0cDovL3lyMS5jLmxlbmNyLm9yZy8zOS5jcmwwggEMBgorBgEE
AdZ5AgQCBIH9BIH6APgAdgDYCVU7lE96/8gWGW+UT4WrsPj8XodVJg8V0S5yu0VL
FAAAAaDOm4tFAAAEAwBHMEUCIANVN4dYt6siDE06LeVSNevg7KPbOD0vZeWoO5nx
JhYyAiEAzIadelt+gyypR+lA/KfdN9YnCJc2yeWP0NrGULZnvdYAfgCOykcLrN5q
86IGsKR6hLdG/h/Gv5U+JeabTuQCSPPG6AAAAaDOm405AAgAAAUAEzn9cQQDAEcw
RQIgAkm8MhIpOg0BJzln8nz/2+uk6KJ2Xqe1yJiB88VrhPwCIQD3hp1NOy4wXLj7
WPG2jkR7mIPerocUgymzc7yuN5mhhjANBgkqhkiG9w0BAQsFAAOCAQEAS1H65hhy
MO/jXmCEbeby47ezwr8c41w9hBcbhp/OzoUZCu4vLNynOYOf9aStZrZVCApU/GD+
FDD29YwIA96F2cNK/6zqeHDyZtSSOcy9vSbLwHPAj+u6FjY29D3WRCpcEw13YegW
nnPyEZvFdnYoOiDcTx2sqHuk5E+Mjq4W68haurafDXpyixsvzbu2Oy6PsX/5eCm/
RGk5M5cpZMQbtskpdBCmv9PvoP8RhenUHdroao1fVqbHC5x9L6qDzK8JaO5aU5oX
6TvwZIYbxesnIoS5RVX8TwKY3OUggnD1yM2ttdLZXl1ur7B0F9MHH5V/6XOBEAt1
JXk395fI909sjA==
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-08T17:44:18+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
664
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
2125
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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