mail.knowledgedefinednetworking.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:b9:6a:a1:39:32:c1:f8:38:91:05:a5:19:5e:fc:76:1b:29 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:b9:6a:a1:39:32:c1:f8:38:91:05:a5:19:5e:fc:76:1b:29
Serial Number (int): 411543116894880813738480820104901336374057
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 47:22:9b:57:dd:44:5c:4e:02:98:f7:89:15:40:b1:4f:1b:4c:93:24
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 10:77:85:af:a9:51:a8:1a:51:ae:51:90:bd:71:22:a2:bb:69:c5:df
Fingerprint (sha256): 01:01:47:91:13:46:64:80:6c:9a:e0:70:e6:a0:64:93:89:1e:f7:4d:7d:c2:c7:2a:74:98:16:d1:3a:d0:db:d1

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4LhU9IPiWBufUohcD/D7
cu7hf5cch2DTfGm26F54a7dQAHORQHuWreSMVkNcoXgVQK3Nmul5Pyigdq1E0BKV
mrwcZGmE+s2xlOjIRDs0ZbV9lstQyKEa7O/8OYNz8mYJDQWk0ih9KkO3OSrv8o6X
MdYdFG3MkJaG2AB7v8PqG1QPYWQAd9yzVtZAsANesIoeHULvQD7dV3vbyBVMoVaV
wznOZvzYamLMsd2mRURbIRJob2TzhDf4093WbnkBQp76BE+p7GgkoBFt0qQzAnAQ
DT2rf1fE4ep7Ch63zW7GGmRH/l0LGu9fwsTkGxq9dSvNBINVVIrfPTkiaKuM0mWp
HwIDAQAB
-----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 411543116894880813738480820104901336374057
 . . . . . . . . [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 2019-05-04 05:52:10 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-02 05:52:10 +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 28368277738386874691010941900272568927062674308954140641570622800780656243737476899677928763830968514980311125957673836172891451227453610909711174778047068238399631341384947974920210940967730818744521738956576172837649737802260073983644133882267293157597864488684669972005893421799994689938676771083714601168543545972595103576407750629453189756466972631150484872091559707796760078240549612681537123098131585183778670961609081289372356222577066805920518596707585474813178654657532225461287040357170790792067645010653378302147226740720241202691975781754237988058223598462029589800987034136696337230698659558622975338783
 . . . . . . . . . . . . . . . . . . . . [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)
							47229b57dd445c4e0298f7891540b14f1b4c9324
 . . . . . . . . . . . . . . . . [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)
							00f10076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016a819d4d27000004030047304502207f0345d53590fb38a03b8a099087cd980af457b65be80c48c4d78476c5d60c18022100b11e15683fa471afa63c0ba4d4a5b225ffbb0901d5bb00de8410535b78946fc600770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016a819d4c800000040300483046022100abdacd7cb6a61613c23bd0989c5fef06ca200468e5d38c01fed43b2922c98acf022100867ae3497964646a4372a1d403cece6eedba1ddb032e9274284bc2b51c78eafa
 . . . . [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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