2016.nscloud.eu
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:3f:52:99:c6:4a:fa:56:67:6d:3a:fd:86:1b:e7:81:8f:5d was issued on by Let's Encrypt.
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=2016.nscloud.eu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:3f:52:99:c6:4a:fa:56:67:6d:3a:fd:86:1b:e7:81:8f:5dSerial Number (int): 282884442050231043325850397710134481620829
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: a7:20:5f:fe:e2:97:1a:3e:32:25:02:a7:37:ba:af:cf:81:69:b9:23
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 7d:28:d3:85:7e:ed:10:89:d4:09:a3:2a:c3:96:b6:46:4b:48:0d:0e
Fingerprint (sha256): 1e:8e:37:a6:1f:85:50:e8:64:1d:70:2c:4a:5b:ba:62:b1:1d:38:03:f2:05:7c:a8:b4:63:03:27:94:16:f1:04
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.org/Check the revocation status for certificate 2016.nscloud.eu
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for 2016.nscloud.eu
Public Key Algorithm
RSA
Key Size
4096
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
2016.nscloud.eu
Other certificates including the domain name nscloud.eu
(limited to 100 certificates)
lionel.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
whoracle.nscloud.eu
lionel.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
nscloud.eu
lionel.nscloud.eu
lionel.nscloud.eu
nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
whoracle.nscloud.eu
lionel.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
2016.nscloud.eu
2016.nscloud.eu
nscloud.eu
nscloud.eu
lionel.nscloud.eu
lionel.nscloud.eu
nscloud.eu
Certificate
The complete raw certificate details for 2016.nscloud.eu in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGAjCCBOqgAwIBAgISAz9SmcZK+lZnbTr9hhvngY9dMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNjA4MTIwMDA0MDBaFw0x NjExMTAwMDA0MDBaMBoxGDAWBgNVBAMTDzIwMTYubnNjbG91ZC5ldTCCAiIwDQYJ KoZIhvcNAQEBBQADggIPADCCAgoCggIBAPtLIhfWIm/krU9Dj2JKw1vMnel1iJ2i BH2GjjaxOurqWpH6oZa/ndgl40q22hXAW+ONu54CDWeGxBiod6TMMGPTiqr9FS8o 1Ch9SvwZ0mnVZoSY2IyTmSzbZe05Sx7cZYTionhmYIz+C26E+HfLbErMXyo19Uid /Tb+QUqSJ7T4gLEwSyjVe+SzJz+Ige2lJtMBVnaxL9u2MctFIGufCfhVeXbeDQOg 0OImBq6xUU84UEfQdmPr5Txf7oJCYylB+YSUqfg8tD84Z48xJCUBMgJKt2Y6pT7W gU0saD62GnCcNkmK0xkLkvKeuxbgdcUhkw552yHzL2drFljFvjHyTIKDRPn3BqLg Ke/c+syG2W2IIGzJbzEuAVkdflgYta/vshYYnJr6yeeyM4wMsErVha2a1c3nbkyc DHPRzzlcju/a7198KhvoZW+3X+H12BPU3bgIV/5kwgTgrLBvhHVsemUCcJ1xLIfv gBm5VpOXg8fLppBxh/79ZdIimqm+SV/G8qDtCzuJNRlO8IGKh/822heOe7eXV3Wr R8qK9JVhd4zKG5sFtdrgJvp27w7N3Q6P4ssBHMGPNXEij2cbTDqvCqIZgbqXe/YV XSIwGY+mqaUIUky/0ninB7svlzarQejto2nk3pONeaDJLIAdO9AzO4x7NW6ri+XP i0nQaCIowezvAgMBAAGjggIQMIICDDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYw FAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFKcg X/7ilxo+MiUCpze6r8+BabkjMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/z qOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29jc3AuaW50 LXgzLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBoGA1UdEQQTMBGCDzIwMTYubnNjbG91ZC5l dTCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC3xMBAQEwgdYwJgYI KwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIGrBggrBgEFBQcC AjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUgcmVsaWVkIHVwb24g YnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29yZGFuY2Ugd2l0aCB0 aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBzOi8vbGV0c2VuY3J5 cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQCB458QILAA5WOf Cy0YaG6+h+WN6iazFvVMqNjUifsMcbtz2eU5XnOmix0XvOmU+vm/Bo0hY6sThLyj 5pCxj9pPQJ0GflkE/YTIuxqrSpzKkYn9eMhGJgyIHURDa3W9GQqWVgmfBJalidEa cjtvVo5Au6ZeodD2wS3JmkYpb0SR0IGvFfBE4i5RBzqnYy51pw79L9VdsZBhZYGL V6UlVXBPpbQQLguTzF/qQExuOV0LSSjdW+9jwkK6uEzr1VGLpR68kLxeM63bWrtl k8VVFD8Jkcbtst1PvnCYVH+dY6lsL7E78PQvKde95itPZ9Y9MqsTJPbcOXJ9KkyG KmbxoPsW -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA+0siF9Yib+StT0OPYkrD W8yd6XWInaIEfYaONrE66upakfqhlr+d2CXjSrbaFcBb4427ngINZ4bEGKh3pMww Y9OKqv0VLyjUKH1K/BnSadVmhJjYjJOZLNtl7TlLHtxlhOKieGZgjP4LboT4d8ts SsxfKjX1SJ39Nv5BSpIntPiAsTBLKNV75LMnP4iB7aUm0wFWdrEv27Yxy0Uga58J +FV5dt4NA6DQ4iYGrrFRTzhQR9B2Y+vlPF/ugkJjKUH5hJSp+Dy0PzhnjzEkJQEy Akq3ZjqlPtaBTSxoPrYacJw2SYrTGQuS8p67FuB1xSGTDnnbIfMvZ2sWWMW+MfJM goNE+fcGouAp79z6zIbZbYggbMlvMS4BWR1+WBi1r++yFhicmvrJ57IzjAywStWF rZrVzeduTJwMc9HPOVyO79rvX3wqG+hlb7df4fXYE9TduAhX/mTCBOCssG+EdWx6 ZQJwnXEsh++AGblWk5eDx8umkHGH/v1l0iKaqb5JX8byoO0LO4k1GU7wgYqH/zba F457t5dXdatHyor0lWF3jMobmwW12uAm+nbvDs3dDo/iywEcwY81cSKPZxtMOq8K ohmBupd79hVdIjAZj6appQhSTL/SeKcHuy+XNqtB6O2jaeTek415oMksgB070DM7 jHs1bquL5c+LSdBoIijB7O8CAwEAAQ== -----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 282884442050231043325850397710134481620829 . . . . . . . . [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 2016-08-12 00:04:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-11-10 00:04:00 +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 '2016.nscloud.eu' . . . . . . . . [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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 1025187991606877348326102504892906094200819984890965341440243624265896208888501669871242624348399911054631471282732380062922305259218075141902609380526620427230859904843221183020180314851855926886775938210935262378680190113554701942028865724418107000843258699609350521113989278301729805757178756570580059960135353790755142529355219133560593889848757309361601514919943987201211130215755516049726867063556355624959082146129638485053812091030500413095255261172260422186940067098367041548493440835299274753133522007002059418666800546813885306513236654775121334255332731216339687313582407410228683807659275314570055365582629940103699980777368325554175299173625822240278311657785375242511574464383570681661932345792641543774178906481821679078788498665223460428548864682448497000270420973331436851937250203447342266518475089982270998861935092849434103586730469016024339940291279560785894587228199461731445025090792832658881190722336821017704900956898943336841547875474174395006266247560400009560782440394384406663674012871766279590222200195021342916079544570564421190224957394029407133057089912929154254503190096352325517632524287364224815071438480346730226999382667460766830139594835672379023321830417620622014345769288194350681683428240623 . . . . . . . . . . . . . . . . . . . . [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) a7205ffee2971a3e322502a737baafcf8169b923 . . . . . . . . . . . . . . . . [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 (100 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 (19 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '2016.nscloud.eu' . . . . . . . . . . . . . . . . [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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