www.icams.de

Issued by R3

About this certificate

This digital certificate with serial number 04:f2:5a:ee:d8:bf:6b:f9:1f:3a:62:f2:b6:95:17:b1:86:08 was issued on by Let's Encrypt.

With 6 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=www.icams.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f2:5a:ee:d8:bf:6b:f9:1f:3a:62:f2:b6:95:17:b1:86:08
Serial Number (int): 430918347204347537957204856007307067229704
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 18:98:9d:1f:2b:bd:a9:4d:6e:06:5a:d5:bd:72:65:d6:c1:ce:6f:57
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 61:54:a5:75:1b:17:d7:1a:68:b6:d1:74:8c:cc:aa:81:59:99:0a:2a
Fingerprint (sha256): fd:33:dd:78:31:33:21:54:a4:09:bc:2b:47:a1:51:c2:8d:1b:5d:a2:d5:bb:95:90:6a:62:c3:7f:e0:b7:bb:13

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate www.icams.de

6

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.icams.de

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

icams.de
icams.rub.de
icams.ruhr-uni-bochum.de
www.icams.de
www.icams.rub.de
www.icams.ruhr-uni-bochum.de

Other certificates including the domain name icams.de

(limited to 100 certificates)
www.icams.de
www.icams.de
www.icams.de
www.icams.de
www.icams.de

Certificate

The complete raw certificate details for www.icams.de in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFRzCCBC+gAwIBAgISBPJa7ti/a/kfOmLytpUXsYYIMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzEwMDYxMTUwMjRaFw0yNDAxMDQxMTUwMjNaMBcxFTATBgNVBAMT
DHd3dy5pY2Ftcy5kZTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAL3Y
QlTF87OiEwa1+ZPmbGWkHDlbKrO30OEA41KCwfMkwyiPMOrqVdWiVYVzEeZ+Eqgj
t5vZxjVXKM8JqoPNqvtFiRQgaTuocG3kEytjNvDGOq4HBM7sHg2nYUo1SLXwITe9
wUzUS+kaqnyt8uvE9BYaTqQx3ostaKhK6LhyVUWa4W095JxI4TaFFtXqf1kafkfg
5K+u+Gyt3b/b1JXg6RQ/EnKzLyXuOW4otCTm9IhCWMFZVX1znFWXwtmQZiTLlcp8
UN9fGriAjj8ENvGafytv/95L2NUsc6yEaIcDdFAfqzgpSaE/mJPCrtiKFLgHPqj+
tusnntvsjBSrMnqTft8CAwEAAaOCAnAwggJsMA4GA1UdDwEB/wQEAwIFoDAdBgNV
HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4E
FgQUGJidHyu9qU1uBlrVvXJl1sHOb1cwHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA
5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMu
by5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8w
eQYDVR0RBHIwcIIIaWNhbXMuZGWCDGljYW1zLnJ1Yi5kZYIYaWNhbXMucnVoci11
bmktYm9jaHVtLmRlggx3d3cuaWNhbXMuZGWCEHd3dy5pY2Ftcy5ydWIuZGWCHHd3
dy5pY2Ftcy5ydWhyLXVuaS1ib2NodW0uZGUwEwYDVR0gBAwwCjAIBgZngQwBAgEw
ggEEBgorBgEEAdZ5AgQCBIH1BIHyAPAAdgA7U3d1Pi25gE6LMFsG/kA7Z9hPw/TH
vQANLXJv4frUFwAAAYsFCgRBAAAEAwBHMEUCIGnJWgz/uNdgFyrI/UzqNzAq1syF
kYRK78gQHyyJFLjpAiEA2GxD5sya9W2wbNLDWx150j9RF4a2xte8lIgbmGCs2MQA
dgDuzdBk1dsazsVct520zROiModGfLzs3sNRSFlGcR+1mwAAAYsFCgRJAAAEAwBH
MEUCIBHpNVCyhdNRItD0Yqgx90Nq7bNGFs1uCAciSkjGr2YIAiEArTK0+gNrSxvr
71JTvomWk0LPhvynT+MMWT1RfegZp5YwDQYJKoZIhvcNAQELBQADggEBAAgKabQA
Trz0p4HaFctyxqxm+rpgDYaBn3i9YEEqtW0KQlbHAAFHqgVCl2F1Cxl67A0MCqHm
yB/tRDpQErjybdZbKKvcypEg65G6Fosmov10MmWqCua/Xk+ebci6HIi7gE3VKoUO
E5Rb1FguX5Z1+OtUqBFX+1p5PcQjctiPhSuS68iwTfz0oj6pyMS/aXfWqAc5AIai
LpaVT+nPsBps1BMfUCueueJtpuC5vK7qyEJWJXZKTzrjTPVu2V1uPGgtY1/t/vOy
6s3enf9AAXLEv/qyH0PvAUHGZLjZ0+6psxB5gp70o9SYp0VmQ/HFxmkbXmE2gqO0
2n8Tl3GCO0AO0vw=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvdhCVMXzs6ITBrX5k+Zs
ZaQcOVsqs7fQ4QDjUoLB8yTDKI8w6upV1aJVhXMR5n4SqCO3m9nGNVcozwmqg82q
+0WJFCBpO6hwbeQTK2M28MY6rgcEzuweDadhSjVItfAhN73BTNRL6RqqfK3y68T0
FhpOpDHeiy1oqErouHJVRZrhbT3knEjhNoUW1ep/WRp+R+Dkr674bK3dv9vUleDp
FD8ScrMvJe45bii0JOb0iEJYwVlVfXOcVZfC2ZBmJMuVynxQ318auICOPwQ28Zp/
K2//3kvY1SxzrIRohwN0UB+rOClJoT+Yk8Ku2IoUuAc+qP626yee2+yMFKsyepN+
3wIDAQAB
-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 430918347204347537957204856007307067229704
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-06 11:50:24 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-04 11:50:23 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.icams.de'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 23965680978349155281001053141317334921345956651634465706393347508786880027719095600372740395098545750864090776587957155597685159603294447004404547867158940578464365077244532516060445219318010811943895372437220162870211602411718014961406125074515950155641381797179451283836196582481428576720150555432878473808297477088719645871621670639055082861394188377897188839651169675033228177927247345987165807950090531446726519690297909737742793962412749743720124352855055621532457815803219764761402048009327459892187990938223586242518830950463174777908878780157200153885229907814856619897301510704379344059948548534705249812191
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							18989d1f2bbda94d6e065ad5bd7265d6c1ce6f57
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (73 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.o.lencr.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (114 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'icams.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'icams.rub.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'icams.ruhr-uni-bochum.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.icams.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.icams.rub.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.icams.ruhr-uni-bochum.de'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (12 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b050a04410000040300473045022069c95a0cffb8d760172ac8fd4cea37302ad6cc8591844aefc8101f2c8914b8e9022100d86c43e6cc9af56db06cd2c35b1d79d23f511786b6c6d7bc94881b9860acd8c4007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b050a04490000040300473045022011e93550b285d35122d0f462a831f7436aedb34616cd6e0807224a48c6af6608022100ad32b4fa036b4b1bebef5253be89969342cf86fca74fe30c593d517de819a796
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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