mail.knowledgedefinednetworking.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:47:37:0c:02:27:74:05:94:c7:63:74:3b:12:37:a7:58:30 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): 03:47:37:0c:02:27:74:05:94:c7:63:74:3b:12:37:a7:58:30Serial Number (int): 285570075737688468190428879457917738637360
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 51:be:78:ba:e4:5f:43:62:ea:c0:af:60:f8:2c:d1:5e:08:a1:cb:a2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 95:11:49:44:b6:6f:17:2b:de:b4:48:9d:05:31:f6:c6:dc:ca:d0:63
Fingerprint (sha256): be:8e:0d:23:48:aa:50:9c:c8:fc:cf:cb:a9:fe:0b:1c:d7:e9:67:02:2e:b3:d2:41:dd:dd:02:65:6a:4a:7a:9f
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----- MIIFkjCCBHqgAwIBAgISA0c3DAIndAWUx2N0OxI3p1gwMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMzEwNDIzMjFaFw0y MDAzMzAwNDIzMjFaMC4xLDAqBgNVBAMTI21haWwua25vd2xlZGdlZGVmaW5lZG5l dHdvcmtpbmcub3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr6DR nJjx92Xd/294fbBuMZJ8K3NFh9wMcqJ3yDeh8tNRVSKmvii5zaekjAEVhgDQFKvz 0JDDFTZGGWx52m+LhEUkKjIGHgWAwqiSM8VVkayIbez1Dq+A3FqVDuokBnOcMejj F1ahogUg3u6zMrZYN/3+tQdHaPt+a1wwCv4+bcsw+P3ijVglyb9vK5HSS8P8N0PG 5PzGLmrQllku0d4RmDpALh6A1ashvISVoOJPNeGQhFAVftKguOOXy0rL9rrLeCs/ 5tlibtKiU+RfEgXISJ9fph4c9pRdajCf8pzRqdwx9XSfHnEsbEBRLZSOz9hFH3Uq 784F4bSOOPAoSBPVOwIDAQABo4ICjDCCAogwDgYDVR0PAQH/BAQDAgWgMB0GA1Ud JQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQW BBRRvni65F9DYurAr2D4LNFeCKHLojAfBgNVHSMEGDAWgBSoSmpjBH3duubRObem RWXv86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3Nw LmludC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0 LmludC14My5sZXRzZW5jcnlwdC5vcmcvMEIGA1UdEQQ7MDmCI21haWwua25vd2xl ZGdlZGVmaW5lZG5ldHdvcmtpbmcub3JnghJtYWlsLm4zY2F0LnVwYy5lZHUwTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdQCyHgXMi6LNiiBOh2b5K7mKJSBna9r6cOeySVMt74uQXgAAAW9aaJW1AAAE AwBGMEQCIFN+nvFNMYnKsKwfwTnO1cCsDS8OA6KCm9j8yJZYQ1WbAiBkJ6ZfG+3s MOFBJhZG4Dsf/BoIiboogc4dr/XkxaXipQB3AG9Tdqwx8DEZ2JkApFEV/3cVHBHZ AsEAKQaNsgiaN9kTAAABb1poloUAAAQDAEgwRgIhAOp8a0cpUB+cG8VWKKAWpQ1k xlwi7NwGOgPWmJEmE4BMAiEAjkib4beUeUg0WnefGsHer172ifDDZidHtECOGzya /6EwDQYJKoZIhvcNAQELBQADggEBAAQO2IMovXznXs/tCSuzik+Ddpkbv0rlnXi4 ++cYJlG7U+jKSm2V5xoFH2/MAnBzeGNEc9lhjCD8g6VaIOf0w/KZqk/4nKV2CLPj IjYSiNYfOlRTr3p9EZgLzBmQG5O053CUt6dxukdVRMhYTMgGoWMiEvBvMBvXP2BR qzzY7OYpYQgZIKiIkoWfQHUf7pPF90mBBeHv8XyklLp8Yo4qZxrVM1NBQb5AFRb5 1fepxiEGAwygoF+N2eIdjerv/Ta15N63nmHYyBMxpB/YwWhC7ft8U+LjA6ICZBYB zqSkyfgxK6m0mVYBZoYA1ZIDDQHAZrLR5WBJhUyjKQYEbfEBkFA= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr6DRnJjx92Xd/294fbBu MZJ8K3NFh9wMcqJ3yDeh8tNRVSKmvii5zaekjAEVhgDQFKvz0JDDFTZGGWx52m+L hEUkKjIGHgWAwqiSM8VVkayIbez1Dq+A3FqVDuokBnOcMejjF1ahogUg3u6zMrZY N/3+tQdHaPt+a1wwCv4+bcsw+P3ijVglyb9vK5HSS8P8N0PG5PzGLmrQllku0d4R mDpALh6A1ashvISVoOJPNeGQhFAVftKguOOXy0rL9rrLeCs/5tlibtKiU+RfEgXI SJ9fph4c9pRdajCf8pzRqdwx9XSfHnEsbEBRLZSOz9hFH3Uq784F4bSOOPAoSBPV OwIDAQAB -----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 285570075737688468190428879457917738637360 . . . . . . . . [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 2019-12-31 04:23:21 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-30 04:23:21 +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 22171006072890587920592416761348267240454584031456760932110744989337725262228865862507136115990409944076282588279222977148729087380594037348325241712045954357228292013639159215790945469732257739999657604189644743746273706986518223979696987652229952099021747578998947283276282725649228972012477429393959332025733993700647918349389140786275565900646247457564470042388443888473426022234864824374536016043818867044102342586667096281372259963818228801222912164634911529954300185674769505660221320848226268102502389072038005457484663979312092639400149046154635822668305597799033466445031268491549930767985122990279978374459 . . . . . . . . . . . . . . . . . . . . [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) 51be78bae45f4362eac0af60f82cd15e08a1cba2 . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f5a6895b500000403004630440220537e9ef14d3189cab0ac1fc139ced5c0ac0d2f0e03a2829bd8fcc8965843559b02206427a65f1bedec30e141261646e03b1ffc1a0889ba2881ce1daff5e4c5a5e2a50077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f5a6896850000040300483046022100ea7c6b4729501f9c1bc55628a016a50d64c65c22ecdc063a03d698912613804c0221008e489be1b7947948345a779f1ac1deaf5ef689f0c3662747b4408e1b3c9affa1 . . . . [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) . . . . . . . . [c:0|t:4|false] OCTET STRING (14 bytes) d88328bd7ce75ecfed092bb38a4f . . . . . . . . [c:2|t:3|false] ORAddress . . . . . . . . [c:2|t:64|false]