www.gartenbauverein-unterrath.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:0f:3b:7e:e7:f2:2c:4e:80:9b:21:98:4b:f5:87:ef:08:71 was issued on by Let's Encrypt.
With 2 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:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=www.gartenbauverein-unterrath.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:0f:3b:7e:e7:f2:2c:4e:80:9b:21:98:4b:f5:87:ef:08:71Serial Number (int): 353632462616434094979187219241310593419377
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 9b:51:41:79:ac:67:8b:d8:7b:19:23:99:77:31:20:8c:42:f2:22:69
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): e3:55:4f:f2:4f:e2:d1:a8:d7:9b:49:9f:a1:4a:3e:5b:71:8c:08:49
Fingerprint (sha256): 62:45:f1:9f:bd:6c:73:db:4c:f0:75:83:f4:28:53:6e:ea:ed:a0:e4:76:fc:c5:5a:a5:8c:65:6f:65:f2:12:3a
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.gartenbauverein-unterrath.de
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.gartenbauverein-unterrath.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
8 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
Other certificates including the domain name gartenbauverein-unterrath.de
(limited to 100 certificates)
www.gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
mfg-eggenfeld.at
wyjwpzyorcbubxa.vasistas-magazine.com
ofmoonlightselene.de
*.rexcoffee.at
www.pension-brusch.de
*.wir-kalkulieren.de
wordpress.notar-liessen.de
dotstars.de
www.gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
*.alles-gegen.de
www.gartenbauverein-unterrath.de
feed.dlrg-jugend-rhein-neckar.de
www.gartenbauverein-unterrath.de
zumchefche.de
www.gartenbauverein-unterrath.de
www.mosti95.lima-city.de
www.gartenbauverein-unterrath.de
www.recruiting-day-2018.lima-city.de
www.tsc-brinkum.de
www.gartenbauverein-unterrath.de
salz-nordhessen.lima-city.de
*.online-marketing-giessen.de
gartenbauverein-unterrath.de
www.bavarianassrockmassaka.de
gartenbauverein-unterrath.de
gartenbauverein-unterrath.de
chefche.de
www.fire-of-fantasy.de
*.belageletneky.de
kingluedi.de
www.scpt.codebea.ch
2020.moinalex.de
gartenbauverein-unterrath.de
www.rosalisa.webspace.rocks
gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
*.liessem.org
www.gartenbauverein-unterrath.de
mfg-eggenfeld.at
wyjwpzyorcbubxa.vasistas-magazine.com
ofmoonlightselene.de
*.rexcoffee.at
www.pension-brusch.de
*.wir-kalkulieren.de
wordpress.notar-liessen.de
dotstars.de
www.gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
*.alles-gegen.de
www.gartenbauverein-unterrath.de
feed.dlrg-jugend-rhein-neckar.de
www.gartenbauverein-unterrath.de
zumchefche.de
www.gartenbauverein-unterrath.de
www.mosti95.lima-city.de
www.gartenbauverein-unterrath.de
www.recruiting-day-2018.lima-city.de
www.tsc-brinkum.de
www.gartenbauverein-unterrath.de
salz-nordhessen.lima-city.de
*.online-marketing-giessen.de
gartenbauverein-unterrath.de
www.bavarianassrockmassaka.de
gartenbauverein-unterrath.de
gartenbauverein-unterrath.de
chefche.de
www.fire-of-fantasy.de
*.belageletneky.de
kingluedi.de
www.scpt.codebea.ch
2020.moinalex.de
gartenbauverein-unterrath.de
www.rosalisa.webspace.rocks
gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
www.gartenbauverein-unterrath.de
*.liessem.org
Certificate
The complete raw certificate details for www.gartenbauverein-unterrath.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFQTCCBCmgAwIBAgISBA87fufyLE6AmyGYS/WH7whxMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNzA5MjQxMTExMDBaFw0x NzEyMjMxMTExMDBaMCsxKTAnBgNVBAMTIHd3dy5nYXJ0ZW5iYXV2ZXJlaW4tdW50 ZXJyYXRoLmRlMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1LxxsCmO 39Ia9UtIUdXUy9Y3n1+/RgKc0qMflv0/03kA2RE16WxQdPQboD7yusoch/mGIdiy CERMVG0PaibUQNtWQyZhfMXNRFYshMH6MZjsxk0ZcRc/ctw/K7yxvcmHrl9vi9IV XHtis0Qmhd49NR+ztjUX/EoY9tBCXz5ZvHfEKSUchMcH3cPrWbd/WSOkqs6jmXr5 +6wufJ+DxP6Q7JipG7OeRTmnYGkC9fNjpduipVPUozv9VtrIREX8CmUqHu/T8DoB R6at7LsZfpPtaF2f0kxUJGgKRYqBundg2QoDeY8ypQLTEdeCZcQp8eQd5fKrLUyk S79wdgWTHwdPwwIDAQABo4ICPjCCAjowDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSb UUF5rGeL2HsZI5l3MSCMQvIiaTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMEkGA1UdEQRCMECCHGdhcnRlbmJhdXZlcmVp bi11bnRlcnJhdGguZGWCIHd3dy5nYXJ0ZW5iYXV2ZXJlaW4tdW50ZXJyYXRoLmRl MIH+BgNVHSAEgfYwgfMwCAYGZ4EMAQIBMIHmBgsrBgEEAYLfEwEBATCB1jAmBggr BgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwgasGCCsGAQUFBwIC MIGeDIGbVGhpcyBDZXJ0aWZpY2F0ZSBtYXkgb25seSBiZSByZWxpZWQgdXBvbiBi eSBSZWx5aW5nIFBhcnRpZXMgYW5kIG9ubHkgaW4gYWNjb3JkYW5jZSB3aXRoIHRo ZSBDZXJ0aWZpY2F0ZSBQb2xpY3kgZm91bmQgYXQgaHR0cHM6Ly9sZXRzZW5jcnlw dC5vcmcvcmVwb3NpdG9yeS8wDQYJKoZIhvcNAQELBQADggEBAI/Kb6U6Yv0LS535 GN2QXRHGsNh/gXbIBiwbya+qcc+jcJhViMlljSBEHRYVVjuQ1XXslPyj1LSTGmHL mzyRwn6ZDc+kPZjF1/Ne2uj34aZxOf2HRR8Xh6KkZ782UZ3iXcA4xKU2P0oly1ai 5NG/nvf4vbm3e38QiJ9DwQdR8z1kMys5ORlllJICcwyX032M9S4EqD+z7HIUzMWO mSOOjQiBjQscOFdQLChzfhmtafzOoD/VBLRMpeyxihFn8qsSAWVKmB73x0tldefY V5ZsOk1JYXXt1JwST6avP/Lgf3f8vr6OqquY1XdztHEBBwHP0ZywEsssgFYCWbXn cnaF4Lw= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1LxxsCmO39Ia9UtIUdXU y9Y3n1+/RgKc0qMflv0/03kA2RE16WxQdPQboD7yusoch/mGIdiyCERMVG0PaibU QNtWQyZhfMXNRFYshMH6MZjsxk0ZcRc/ctw/K7yxvcmHrl9vi9IVXHtis0Qmhd49 NR+ztjUX/EoY9tBCXz5ZvHfEKSUchMcH3cPrWbd/WSOkqs6jmXr5+6wufJ+DxP6Q 7JipG7OeRTmnYGkC9fNjpduipVPUozv9VtrIREX8CmUqHu/T8DoBR6at7LsZfpPt aF2f0kxUJGgKRYqBundg2QoDeY8ypQLTEdeCZcQp8eQd5fKrLUykS79wdgWTHwdP wwIDAQAB -----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 353632462616434094979187219241310593419377 . . . . . . . . [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 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-09-24 11:11:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-12-23 11:11:00 +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.gartenbauverein-unterrath.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 26855445899062260720710076528361695981758362285218051200182856817439977812260205201123311466459287027367202615476989559981070821477859303540035658312093180941983371792234592561226021908118904859619826727096803083326541074498108555519815636727574513711398843072151915046821429419716104672259033128372988782956871306428180510945838782136927888948255938724379298153435070815496224208938987839791012104914088048495816245343807690623499329800357537864613196737988804948854188147470417155899188193353625487127099776149301469891839201078280567532961980453447886742656405007763904415211563604847573171873785583946824780566467 . . . . . . . . . . . . . . . . . . . . [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) 9b514179ac678bd87b1923997731208c42f22269 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (66 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'gartenbauverein-unterrath.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.gartenbauverein-unterrath.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 (246 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 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [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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