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

zhaw.ch · 160.85.104.112:443

Verified

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

Subject
CN=zhaw.ch
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-08-11T23:20:59+00:00
Expires
2026-11-09T23:20:58+00:00
Days remaining
34
Serial (hex)
05607B9C4E373943FD822C68AEF425F41AB1
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.alias-zhaw.ch, DNS:*.archbau.zhaw.ch, DNS:*.blog.zhaw.ch, DNS:*.elk.zhaw.ch, DNS:*.engineering.zhaw.ch, DNS:*.evento.zhaw.ch, DNS:*.fggeo.lsfm.zhaw.ch, DNS:*.gesundheit.zhaw.ch, DNS:*.hsb.zhaw.ch, DNS:*.iap.zhaw.ch, DNS:*.ict.zhaw.ch, DNS:*.ilgi.zhaw.ch, DNS:*.ines.zhaw.ch, DNS:*.ipt.zhaw.ch, DNS:*.laufbahndiagnostik.ch, DNS:*.linguistik.zhaw.ch, DNS:*.lsfm.zhaw.ch, DNS:*.mentormate.zhaw.ch, DNS:*.psychologie.zhaw.ch, DNS:*.sap.zhaw.ch, DNS:*.sml.zhaw.ch, DNS:*.sozialearbeit.zhaw.ch, DNS:*.studiportal.gesundheit.zhaw.ch, DNS:*.wiki.zhaw.ch, DNS:*.zhaw.ch, DNS:alias-zhaw.ch, DNS:laufbahndiagnostik.ch, DNS:www.servicedesk-test.zhaw.ch, DNS:www.servicedesk.zhaw.ch, DNS:zhaw.ch

SHA-256 fingerprint

C3:90:9E:49:8C:77:22:DD:0C:F3:AB:F5:5E:84:C1:C4:E8:1F:4A:95:28:A8:AE:DF:73:59:89:D6:7C:F2:79:AE
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
0B:4C:E7:87:1F:56:88:C7:AC:C4:EF:B9:8A:F4:AE:7C:1E:C9:A6:B7
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:*.alias-zhaw.ch, DNS:*.archbau.zhaw.ch, DNS:*.blog.zhaw.ch, DNS:*.elk.zhaw.ch, DNS:*.engineering.zhaw.ch, DNS:*.evento.zhaw.ch, DNS:*.fggeo.lsfm.zhaw.ch, DNS:*.gesundheit.zhaw.ch, DNS:*.hsb.zhaw.ch, DNS:*.iap.zhaw.ch, DNS:*.ict.zhaw.ch, DNS:*.ilgi.zhaw.ch, DNS:*.ines.zhaw.ch, DNS:*.ipt.zhaw.ch, DNS:*.laufbahndiagnostik.ch, DNS:*.linguistik.zhaw.ch, DNS:*.lsfm.zhaw.ch, DNS:*.mentormate.zhaw.ch, DNS:*.psychologie.zhaw.ch, DNS:*.sap.zhaw.ch, DNS:*.sml.zhaw.ch, DNS:*.sozialearbeit.zhaw.ch, DNS:*.studiportal.gesundheit.zhaw.ch, DNS:*.wiki.zhaw.ch, DNS:*.zhaw.ch, DNS:alias-zhaw.ch, DNS:laufbahndiagnostik.ch, DNS:www.servicedesk-test.zhaw.ch, DNS:www.servicedesk.zhaw.ch, DNS:zhaw.ch
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/50.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Aug 12 00:19:30.193 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:43:20:98:68:D3:7C:68:13:6E:A3:E7:41: 5E:52:EA:46:12:DB:5B:5E:71:FB:C3:46:B5:3E:9A:43: 08:45:44:CC:02:20:02:3D:7C:6A:EA:0C:C0:77:B5:F5: 97:DD:80:E0:0F:63:50:30:E4:C5:FD:26:63:B2:FE:EC: 47:1F:AF:97:7B:91 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 : Aug 12 00:19:30.352 2026 GMT Extensions: 00:00:05:00:12:35:BC:C0 Signature : ecdsa-with-SHA256 30:45:02:20:58:D4:B8:DE:97:52:19:0C:5A:71:47:A0: 23:C5:FB:4A:94:F4:9F:30:91:30:27:B9:33:20:F9:94: 2D:5E:4F:04:02:21:00:C6:37:6F:0F:3C:85:BF:84:55: 09:F1:A7:31:16:A5:DC:D3:36:84:F4:C4:8E:38:BC:BC: 6D:1D:C7:6D:E5:A7:B3
-----BEGIN CERTIFICATE-----
MIIHHjCCBgagAwIBAgISBWB7nE43OUP9gixorvQl9BqxMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNZUjIwHhcNMjYwODExMjMyMDU5WhcNMjYxMTA5MjMyMDU4WjASMRAwDgYDVQQD
Ewd6aGF3LmNoMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3QfPuqcn
a6fSEGpG9orcciXV3aKKQHbi8DYBAjQkybPs0k4gFiHk7QtEKjuZTNFPHKo+sgEQ
SzBHMzFRCKHYp/eQYcibaKxg29WEABJ+gtyaAD9nKfdqCEK7cf63Ix33y7FUwnA9
irLHxxyp9ETWuqqTRmINSrhHGWL4xF+67lCES3CSrpHjzufzDZmHbxEbO07zdgZ8
oSncwPU673qyHJhzrUyr6HMWMkjmBbSkHG9WvgaflJ8WpDrGCDpMR8y1/X8jkD1Q
a+VBdTzoEavR4dvlT+R8sXt1a0NYdm8ZzTTevATBWJtFgSXj8eUjpxnV3ajUgWw/
XvTUyD4O2JFCTQIDAQABo4IESzCCBEcwDgYDVR0PAQH/BAQDAgWgMBMGA1UdJQQM
MAoGCCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFAtM54cfVojHrMTv
uYr0rnweyaa3MB8GA1UdIwQYMBaAFEAVLSZ57TIgnt+ach3WMh+BDIEMMDMGCCsG
AQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0cDovL3lyMi5pLmxlbmNyLm9yZy8w
ggJHBgNVHREEggI+MIICOoIPKi5hbGlhcy16aGF3LmNoghEqLmFyY2hiYXUuemhh
dy5jaIIOKi5ibG9nLnpoYXcuY2iCDSouZWxrLnpoYXcuY2iCFSouZW5naW5lZXJp
bmcuemhhdy5jaIIQKi5ldmVudG8uemhhdy5jaIIUKi5mZ2dlby5sc2ZtLnpoYXcu
Y2iCFCouZ2VzdW5kaGVpdC56aGF3LmNogg0qLmhzYi56aGF3LmNogg0qLmlhcC56
aGF3LmNogg0qLmljdC56aGF3LmNogg4qLmlsZ2kuemhhdy5jaIIOKi5pbmVzLnpo
YXcuY2iCDSouaXB0LnpoYXcuY2iCFyoubGF1ZmJhaG5kaWFnbm9zdGlrLmNoghQq
Lmxpbmd1aXN0aWsuemhhdy5jaIIOKi5sc2ZtLnpoYXcuY2iCFCoubWVudG9ybWF0
ZS56aGF3LmNoghUqLnBzeWNob2xvZ2llLnpoYXcuY2iCDSouc2FwLnpoYXcuY2iC
DSouc21sLnpoYXcuY2iCFyouc296aWFsZWFyYmVpdC56aGF3LmNogiAqLnN0dWRp
cG9ydGFsLmdlc3VuZGhlaXQuemhhdy5jaIIOKi53aWtpLnpoYXcuY2iCCSouemhh
dy5jaIINYWxpYXMtemhhdy5jaIIVbGF1ZmJhaG5kaWFnbm9zdGlrLmNoghx3d3cu
c2VydmljZWRlc2stdGVzdC56aGF3LmNoghd3d3cuc2VydmljZWRlc2suemhhdy5j
aIIHemhhdy5jaDATBgNVHSAEDDAKMAgGBmeBDAECATAuBgNVHR8EJzAlMCOgIaAf
hh1odHRwOi8veXIyLmMubGVuY3Iub3JnLzUwLmNybDCCAQsGCisGAQQB1nkCBAIE
gfwEgfkA9wB1AJROQ4f67MHvgfMZJCaoGGUBx9NfOAIBP3JnfVU3LhnYAAABn/NW
pxEAAAQDAEYwRAIgQyCYaNN8aBNuo+dBXlLqRhLbW15x+8NGtT6aQwhFRMwCIAI9
fGrqDMB3tfWX3YDgD2NQMOTF/SZjsv7sRx+vl3uRAH4ARq+GPTs+5Z+ld96oJF02
sNntIqIj9GF3QSKUUu6VUF8AAAGf81ansAAIAAAFABI1vMAEAwBHMEUCIFjUuN6X
UhkMWnFHoCPF+0qU9J8wkTAnuTMg+ZQtXk8EAiEAxjdvDzyFv4RVCfGnMRal3NM2
hPTEjji8vG0dx23lp7MwDQYJKoZIhvcNAQELBQADggEBALd+KaZWuQh36kMDU8uP
XQZHN4GjThC09l9S2J3ChH2traFSaCD57u+yO6BluBdDgsTHgowv556Gal9PwJv9
tUdXBveR5rCKorRo0nbC1W9ER7l38B2KdZP8sEDJrOZ0j960FYopyw2doZjx4JAK
o3ND2oJouYISkjR/dTV5kVTEJqjWYzN6gtNcZ0fT/8UtDX6dxxcbuQUo5M+BY0la
6pjzOZtvbZAFrCcpJWr0Z1HGj01nzGtvW9uMtHyu+r+RAQJJHhZxNwpGyrrRs+95
zlRswJvdmUs25ywnKR+nlG9lryFiHNUeHuShjsOLOwO0g2J5YJGKDwf2KtZLEmho
GCs=
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-06T08:26:59+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
697
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
2158
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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