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

campusberlinbuch.de · 45.134.40.28:443

Verified

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

Subject
CN=berlin-bioscience-academy.de
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-10T01:14:18+00:00
Expires
2026-12-09T01:14:17+00:00
Days remaining
63
Serial (hex)
05659B805C672CAC7A980C035FF6C0892360
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:berlin-bioscience-academy.de, DNS:berlin-buch-gesundheitsregion.de, DNS:berlin-buch.com, DNS:berlinbiocube.de, DNS:berlinbioscienceacademy.de, DNS:campus-berlin-buch.de, DNS:campusart.berlin, DNS:campusberlinbuch.de, DNS:campusvital.de, DNS:forscherferien-berlin.de, DNS:glaesernes-labor-akademie.de, DNS:glaesernes-labor.de, DNS:info.berlin-buch.com, DNS:info.campusvital.de, DNS:kurse.campusvital.de, DNS:mobility.campus-berlin-buch.de, DNS:mobility.campusberlinbuch.de, DNS:www.berlin-bioscience-academy.de, DNS:www.berlin-buch-gesundheitsregion.de, DNS:www.berlin-buch.com, DNS:www.berlinbiocube.de, DNS:www.berlinbioscienceacademy.de, DNS:www.campus-berlin-buch.de, DNS:www.campusart.berlin, DNS:www.campusberlinbuch.de, DNS:www.campusvital.de, DNS:www.forscherferien-berlin.de, DNS:www.glaesernes-labor-akademie.de, DNS:www.glaesernes-labor.de, DNS:wwwtest.forscherferien-berlin.de

SHA-256 fingerprint

57:53:D8:E5:F4:97:EC:A1:0A:21:F3:11:6A:8E:CB:40:68:D0:53:B1:4B:61:D7:EB:E2:50:15:15:0E:AD:E9:22
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
E1:70:76:A7:24:C7:D0:BF:34:B8:74:40:FE:B0:34:86:0C:BD:43:7F
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:berlin-bioscience-academy.de, DNS:berlin-buch-gesundheitsregion.de, DNS:berlin-buch.com, DNS:berlinbiocube.de, DNS:berlinbioscienceacademy.de, DNS:campus-berlin-buch.de, DNS:campusart.berlin, DNS:campusberlinbuch.de, DNS:campusvital.de, DNS:forscherferien-berlin.de, DNS:glaesernes-labor-akademie.de, DNS:glaesernes-labor.de, DNS:info.berlin-buch.com, DNS:info.campusvital.de, DNS:kurse.campusvital.de, DNS:mobility.campus-berlin-buch.de, DNS:mobility.campusberlinbuch.de, DNS:www.berlin-bioscience-academy.de, DNS:www.berlin-buch-gesundheitsregion.de, DNS:www.berlin-buch.com, DNS:www.berlinbiocube.de, DNS:www.berlinbioscienceacademy.de, DNS:www.campus-berlin-buch.de, DNS:www.campusart.berlin, DNS:www.campusberlinbuch.de, DNS:www.campusvital.de, DNS:www.forscherferien-berlin.de, DNS:www.glaesernes-labor-akademie.de, DNS:www.glaesernes-labor.de, DNS:wwwtest.forscherferien-berlin.de
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/97.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Sep 10 02:12:48.390 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:B5:C1:6F:C8:10:F6:D6:E3:94:24:58: 69:B4:FC:D8:05:34:62:9D:75:9E:F1:3A:C0:51:38:A4: 1C:0B:EF:A4:F4:02:20:6E:6B:0E:C6:0E:64:DF:7B:15: C9:7E:64:42:B3:BF:CB:C6:11:69:53:CF:FF:CE:F9:7B: DC:D9:36:CE:90:DD:D1 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86: D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF Timestamp : Sep 10 02:12:49.366 2026 GMT Extensions: 00:00:05:00:3E:BD:91:23 Signature : ecdsa-with-SHA256 30:45:02:20:29:D4:12:5B:26:0E:3E:0F:0A:38:3F:00: 8E:D8:BD:9A:6F:E6:96:D6:BA:90:60:82:C3:7E:8D:08: BB:0C:57:9A:02:21:00:C6:01:B7:F7:D4:C5:F7:48:5C: FF:6D:25:40:A2:CE:00:1A:2F:AC:8A:C9:D7:C3:C2:62: BC:F5:38:46:C1:E5:1E
-----BEGIN CERTIFICATE-----
MIIH/zCCBuegAwIBAgISBWWbgFxnLKx6mAwDX/bAiSNgMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNZUjEwHhcNMjYwOTEwMDExNDE4WhcNMjYxMjA5MDExNDE3WjAnMSUwIwYDVQQD
ExxiZXJsaW4tYmlvc2NpZW5jZS1hY2FkZW15LmRlMIIBIjANBgkqhkiG9w0BAQEF
AAOCAQ8AMIIBCgKCAQEArFoZp7hzMjXaJJ+LHbbWzNDSsjSJaQlv5+7z8N/8onQN
49BkktA/MvNz9QdxAfLBCwPYZ8+ilzmJih2fi0brxk7t9VG6UmvXnFDSjwn5Lf5P
AGPDKiGlfLHAGj98AanHuYu9iQhgzWNbkgJhPub91uch6b1ZbI5ciRGPoMzhs08T
MeYzjY0gopGAh3AyV2K2J+vlUfvCkGXUtaZhPzm2K1ex+heKnY88VVoRQYbsqitV
igJGvppx6F5kfsbV2ropdTK47AWDYFqgZ3yMvnaZeRf/33UhAxoAjLnoh9Mz799P
GtDmnvupR7lCJgkIXOIHYbQraV5KELlROGc19PENlQIDAQABo4IFFzCCBRMwDgYD
VR0PAQH/BAQDAgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAw
HQYDVR0OBBYEFOFwdqckx9C/NLh0QP6wNIYMvUN/MB8GA1UdIwQYMBaAFB8vNb5G
FILNQLGueSxVePr31Gj7MDMGCCsGAQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0
cDovL3lyMS5pLmxlbmNyLm9yZy8wggMSBgNVHREEggMJMIIDBYIcYmVybGluLWJp
b3NjaWVuY2UtYWNhZGVteS5kZYIgYmVybGluLWJ1Y2gtZ2VzdW5kaGVpdHNyZWdp
b24uZGWCD2Jlcmxpbi1idWNoLmNvbYIQYmVybGluYmlvY3ViZS5kZYIaYmVybGlu
Ymlvc2NpZW5jZWFjYWRlbXkuZGWCFWNhbXB1cy1iZXJsaW4tYnVjaC5kZYIQY2Ft
cHVzYXJ0LmJlcmxpboITY2FtcHVzYmVybGluYnVjaC5kZYIOY2FtcHVzdml0YWwu
ZGWCGGZvcnNjaGVyZmVyaWVuLWJlcmxpbi5kZYIcZ2xhZXNlcm5lcy1sYWJvci1h
a2FkZW1pZS5kZYITZ2xhZXNlcm5lcy1sYWJvci5kZYIUaW5mby5iZXJsaW4tYnVj
aC5jb22CE2luZm8uY2FtcHVzdml0YWwuZGWCFGt1cnNlLmNhbXB1c3ZpdGFsLmRl
gh5tb2JpbGl0eS5jYW1wdXMtYmVybGluLWJ1Y2guZGWCHG1vYmlsaXR5LmNhbXB1
c2JlcmxpbmJ1Y2guZGWCIHd3dy5iZXJsaW4tYmlvc2NpZW5jZS1hY2FkZW15LmRl
giR3d3cuYmVybGluLWJ1Y2gtZ2VzdW5kaGVpdHNyZWdpb24uZGWCE3d3dy5iZXJs
aW4tYnVjaC5jb22CFHd3dy5iZXJsaW5iaW9jdWJlLmRlgh53d3cuYmVybGluYmlv
c2NpZW5jZWFjYWRlbXkuZGWCGXd3dy5jYW1wdXMtYmVybGluLWJ1Y2guZGWCFHd3
dy5jYW1wdXNhcnQuYmVybGlughd3d3cuY2FtcHVzYmVybGluYnVjaC5kZYISd3d3
LmNhbXB1c3ZpdGFsLmRlghx3d3cuZm9yc2NoZXJmZXJpZW4tYmVybGluLmRlgiB3
d3cuZ2xhZXNlcm5lcy1sYWJvci1ha2FkZW1pZS5kZYIXd3d3LmdsYWVzZXJuZXMt
bGFib3IuZGWCIHd3d3Rlc3QuZm9yc2NoZXJmZXJpZW4tYmVybGluLmRlMBMGA1Ud
IAQMMAowCAYGZ4EMAQIBMC4GA1UdHwQnMCUwI6AhoB+GHWh0dHA6Ly95cjEuYy5s
ZW5jci5vcmcvOTcuY3JsMIIBDAYKKwYBBAHWeQIEAgSB/QSB+gD4AHYA1219ENGn
9XfCx+lf1wC/+YLJM1pl4dCzAXMXwMjFaXcAAAGgiRbOhgAABAMARzBFAiEAtcFv
yBD21uOUJFhptPzYBTRinXWe8TrAUTikHAvvpPQCIG5rDsYOZN97Fcl+ZEKzv8vG
EWlTz//O+Xvc2TbOkN3RAH4AGoudaw/+v4G0eTnG0jEKhtbRAtTwRuIYLJ3jX14m
Je8AAAGgiRbSVgAIAAAFAD69kSMEAwBHMEUCICnUElsmDj4PCjg/AI7YvZpv5pbW
upBggsN+jQi7DFeaAiEAxgG399TF90hc/20lQKLOABovrIrJ18PCYrz1OEbB5R4w
DQYJKoZIhvcNAQELBQADggEBACxSsIGIINCx/IOkd5u7ZugHiFISF0JK1Ji4Mv7/
toCC+cMMb2tTKKcVwgksPwlk6aQmzjIlWftgsK3GjSBV/eIMiptAj2P9zzVaMVrD
zUcx5sI4EZJOVsZ63+zNvkT+5BNhJoMffbycqFlMqF68WNOPIJSMvkPmLTUDKZf8
LoBhKauF0tXIzelJyVfkiLQpVzcQLD9RVcLFp0qYSMwcG/rZJYJClt4V+zgu3vPC
vgynLYl2upAPSVhr2OLuwnluppo4ZgOE5sOKrKss4f8RTlDf8c6He2mrffzHW5ln
PKrJ/MyS+CHJEmbHYVY5Yq1y2AL7K4o1+6VCz8sJurccHTI=
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-06T06:23:41+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
697
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
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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