mail.knowledgedefinednetworking.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:3a:b2:a1:0c:05:30:fd:e9:e4:93:26:ff:70:4b:88:b0:da 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=mail.knowledgedefinednetworking.org
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:3a:b2:a1:0c:05:30:fd:e9:e4:93:26:ff:70:4b:88:b0:daSerial Number (int): 368422959795299574899619401748290407543002
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 41:2f:b6:e5:db:f0:1e:03:39:30:0f:d6:da:ce:75:89:63:a9:2b:cc
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): cd:95:67:9c:79:61:ea:94:54:d0:85:9c:43:90:22:bf:73:cf:3a:f1
Fingerprint (sha256): b1:7c:3e:90:bc:77:51:9f:8c:ca:ea:b0:37:66:86:95:ad:44:b8:bb:2c:e9:a4:67:e8:df:88:38:49:34:9d:8e
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate mail.knowledgedefinednetworking.org
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for mail.knowledgedefinednetworking.org
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
mail.knowledgedefinednetworking.org
mail.n3cat.upc.edu
mail.n3cat.upc.edu
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Certificate
The complete raw certificate details for mail.knowledgedefinednetworking.org in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFkzCCBHugAwIBAgISBDqyoQwFMP3p5JMm/3BLiLDaMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA3MDMwOTI4NDdaFw0x OTEwMDEwOTI4NDdaMC4xLDAqBgNVBAMTI21haWwua25vd2xlZGdlZGVmaW5lZG5l dHdvcmtpbmcub3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx3H5 grfL6EU1wgUgUvferZAVL23pKn6Ou+7WYc6aoVM8eje9Q7AknmAY+rZ1tRbO+K2n GX04FkNgEQgd5K9DlIrmOXqVEYAqjzJxmg539fbPbFZGMrQZuZR74qXGq2VX00ze 24eNfyVtL/0JuHxEKWJmCmOOkvNMlnWZdmtVrwPbDqWz6NWuM6yruR6UgGDQDuCT nHmu/fhIgG8LFnLGsvpA0nPes2bof1O21tbF/70rh/mlOKUWvE33zIb5lrGp3+oI wI6xpoUVWUUEyPfgzN7O5woCuvLgg/qRxmAH3scUzjR0aE+4Pkyc/9lCzNx0SBxV a98EbG/leAPbHGJ8KQIDAQABo4ICjTCCAokwDgYDVR0PAQH/BAQDAgWgMB0GA1Ud JQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQW BBRBL7bl2/AeAzkwD9baznWJY6krzDAfBgNVHSMEGDAWgBSoSmpjBH3duubRObem RWXv86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3Nw LmludC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0 LmludC14My5sZXRzZW5jcnlwdC5vcmcvMEIGA1UdEQQ7MDmCI21haWwua25vd2xl ZGdlZGVmaW5lZG5ldHdvcmtpbmcub3JnghJtYWlsLm4zY2F0LnVwYy5lZHUwTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQCBIH2BIHz APEAdgDiaUuuJujpQAnohhu2O4PUPuf+dIj7pI8okwGd3fHb/gAAAWu3YS0tAAAE AwBHMEUCIQCzR97z5VuVc8oqKnklKpMD1CrgjK0RJBp8gYuVPrzKTAIgVYo/JWkd VOpuNqieY405s+jd6Gz8mIMU1DEQRKuKEeYAdwApPFGWVMg5ZbqqUPxYB9S3b79Y eily3KTDDPTlRUf0eAAAAWu3YS8iAAAEAwBIMEYCIQCPVhMXZhXJb9KmjsBDV5JS 7wGMB1eYB4sV75f2dLzJrQIhAKMf/csH14pl5xyum6eGRUO6QaACzQ4IXvPt/Inv JPgyMA0GCSqGSIb3DQEBCwUAA4IBAQCIf0KCsm3m1UGukjNnAkWoAjwy5yRldQv3 1UEbZLbObclPwpudzcQ4HnW0OkabV3NGFSVYgEA9wlnguQF9karfQfezmCYbC+jE MgC8/w8z2/eh0lLOv8k8pRS7ppJ936H82YcwNfCeTnS/HdaUwnWCNE7RakdaXgKn H6Oh4I3bnhF9PcVoaOXeM5lkZVlL6WwGu2OYAbaBL5no06td0KsB5O4XrAHLMnVd uQp6fnEwAUfZ8XJ0K6EJ3On1mqwlMwK3RQo5plMASsAQPca7jpZtMZVk6Gr+shyH VRuEKXcjxK/Dflz/Yet+N+lSy4TpH7gO4WlIp1H0cWbOyTRotX98 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx3H5grfL6EU1wgUgUvfe rZAVL23pKn6Ou+7WYc6aoVM8eje9Q7AknmAY+rZ1tRbO+K2nGX04FkNgEQgd5K9D lIrmOXqVEYAqjzJxmg539fbPbFZGMrQZuZR74qXGq2VX00ze24eNfyVtL/0JuHxE KWJmCmOOkvNMlnWZdmtVrwPbDqWz6NWuM6yruR6UgGDQDuCTnHmu/fhIgG8LFnLG svpA0nPes2bof1O21tbF/70rh/mlOKUWvE33zIb5lrGp3+oIwI6xpoUVWUUEyPfg zN7O5woCuvLgg/qRxmAH3scUzjR0aE+4Pkyc/9lCzNx0SBxVa98EbG/leAPbHGJ8 KQIDAQAB -----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 368422959795299574899619401748290407543002 . . . . . . . . [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 2019-07-03 09:28:47 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-01 09:28:47 +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 'mail.knowledgedefinednetworking.org' . . . . . . . . [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 25177625683292980315545609448454437585978503528103731108376465638839573219697862124432556234732400413990392112216599733199703488941396895528764844309671963028282838999453430446094186488590783614717921746738102281272735633310683000841453495071485972546186220310583787795733064410386550530844141365599085014518268294192433288822101819355629427289885701220932906537946460059258956690555145465153727765715757085314219253991134091933797175859034663790944523490171602153558511496102687932886804786401324000362768950176159447392989603459420398222354848305844486876133277691838639073327378433321692379087348009151442192596009 . . . . . . . . . . . . . . . . . . . . [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) 412fb6e5dbf01e0339300fd6dace758963a92bcc . . . . . . . . . . . . . . . . [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 (59 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.knowledgedefinednetworking.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.n3cat.upc.edu' . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016bb7612d2d0000040300473045022100b347def3e55b9573ca2a2a79252a9303d42ae08cad11241a7c818b953ebcca4c0220558a3f25691d54ea6e36a89e638d39b3e8dde86cfc988314d4311044ab8a11e6007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016bb7612f2200000403004830460221008f5613176615c96fd2a68ec043579252ef018c075798078b15ef97f674bcc9ad022100a31ffdcb07d78a65e71cae9ba7864543ba41a002cd0e085ef3edfc89ef24f832 . . . . [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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