mail.knowledgedefinednetworking.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:89:75:0c:84:af:67:50:bf:ac:0c:44:e4:88:ba:69:56:e7 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): 04:89:75:0c:84:af:67:50:bf:ac:0c:44:e4:88:ba:69:56:e7
Serial Number (int): 395223412669453664353278852064094678767335
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e4:5a:65:a7:aa:9d:2f:c4:ac:99:a4:13:f7:73:dd:53:b0:05:b8:43
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): b1:34:4b:b8:92:39:38:ee:10:4c:5f:59:7a:c9:d3:64:49:85:2e:4d
Fingerprint (sha256): d5:07:17:f3:4c:67:63:41:cc:bc:33:90:bb:03:9f:ee:25:da:52:35:69:ba:9c:9f:7f:cf:1e:1b:b9:81:5f:32

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 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

Other certificates including the domain name knowledgedefinednetworking.org

(limited to 100 certificates)
mail.knowledgedefinednetworking.org
knowledgedefinednetworking.org
cba.upc.edu
knowledgedefinednetworking.org
cba.upc.edu
mail.knowledgedefinednetworking.org
knowledgedefinednetworking.org
cba.upc.edu
knowledgedefinednetworking.org
knowledgedefinednetworking.org
knowledgedefinednetworking.org
knowledgedefinednetworking.org
mail.knowledgedefinednetworking.org
cba.upc.edu
mail.knowledgedefinednetworking.org
mail.knowledgedefinednetworking.org
mail.knowledgedefinednetworking.org
knowledgedefinednetworking.org
mail.knowledgedefinednetworking.org
cba.upc.edu
cba.upc.edu
cba.upc.edu
knowledgedefinednetworking.org
cba.upc.edu

Certificate

The complete raw certificate details for mail.knowledgedefinednetworking.org in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsWLWC38OaZvlHD8Xi8BZ
P97f6IUYyXyQWOwRHtgmLqLhjhawb0upj+oWlz02TXI775iQ5x9M0fIFZg4E8v4A
lTZ8OqDzFyqpCIlj1sO+vI8Zl4CAytUQQHBCiHJrCUshdDQsfkUzkgrBNtAO8Iix
sxRPNgEkQMlNQ14Oz9E/vLNDWlgqqFzfe8Fwq8tSoKCopGLpeJg/od5OZx0S+ogl
9JtVpczAOdRzBngas27nXfCZG4lbSFOS8Rs5O5He9mTJPEp5rVtUQ3RulCEXqBWz
BpXEHPLnIOO4+Ye2IhAbVTmON0Cz05FuvHoUtGBQFzKdIHPahEAIMRP42mOqSc+Y
1wIDAQAB
-----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 395223412669453664353278852064094678767335
 . . . . . . . . [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 2019-03-04 14:50:18 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-02 14:50:18 +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 22392917882759691403584896209080744347942414255397620795887107535064685756341124371383303663369241217917424318449357488471225538286072809266090756862513688307037750043924306643848442715892837481406125364074023989718990505179706167039450258054188945146693969695186011926546602126462103344619374575991806583668652918456656455782989972356507120282025719554119626434738836485214065867088668577810057114961449856203713419802108690201730123915944018376277638514463938896775913788979509275037765794735864203254350703839144572443952165436858797611699048497998091607602373597900863388369705191706528896536269490926705276066007
 . . . . . . . . . . . . . . . . . . . . [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)
							e45a65a7aa9d2fc4ac99a413f773dd53b005b843
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076005581d4c2169036014aea0b9b573c53f0c0e43878702508172fa3aa1d0713d30c0000016949660e2c000004030047304502210082e9545a5dd256092603dc2cb9f1189c045cfa44122b24f43545d0e90485f9eb02207a65ec87a9462bdcb421a13fcb406f1fc1e14b5e9848c4354277065e762569ba007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016949660d1d000004030046304402205689888f5a6ee392ae27f8e4ae333da94f69c9bd27b98b29dbe6ce1b6aa243680220304b0220a7e2149ec629adcd660ff6472efc06afc9e2e843a2546f96657beb8c
 . . . . [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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