mail.knowledgedefinednetworking.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:5e:38:1f:c2:4f:6d:6c:8f:40:9d:41:7b:08:f1:c3:78:a1 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): 03:5e:38:1f:c2:4f:6d:6c:8f:40:9d:41:7b:08:f1:c3:78:a1
Serial Number (int): 293398001955895878427568329299537158174881
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 81:b7:24:ed:44:76:08:d3:b6:c7:6e:c2:ed:2d:7e:3f:aa:87:8e:13
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ba:91:d1:1e:32:96:84:fc:52:8e:8a:ee:e7:21:8a:fd:3f:1e:2e:50
Fingerprint (sha256): 2b:93:0e:07:7d:fd:cf:80:9c:04:6f:9a:d5:f9:4d:a5:a8:09:87:d3:29:9c:6e:a4:c4:44:27:0b:22:b5:ba:96

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA8YjVU0d3LHbDcl+Fz8Ml
FnyO6qdCVvb4n36pa6niCORN2KqMqy0Y7w9OHrav1BLyCIKTDA4mYY0UbTIMoTvc
bW9cFW7D0kBvFPBhPb0RDiDVJfHz+FRekSV/84LJHnb8A4PP42jVqVRW1a7RI5ML
VhhqzmPj9hmGPWVo14GQW9cMnfEPFkMi6nVtAfyAxIqkgbTE7Z7D7ZyxRQPDbc8M
FBVn3z4N+hW1OrpG/A/KhdvhAnzwWar50Fw3Gsyo0ymaotUKmt3/YghxmWzCFYJb
gzEowvSNB+N5c0d3P6Fv0Gd8I829BKGDpPjB0y7hK7cUGmwWdQkW+EZ7F7E9IfnR
cQIDAQAB
-----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 293398001955895878427568329299537158174881
 . . . . . . . . [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 2019-10-31 15:32:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-29 15:32:48 +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 30490906512859274623127865704477464916643263156494728073072280489620758055396644971063039091240491302993766195141283191897306022351247837126042523706138500510189010828788641389717797279833198882564005693898530090006221634713645443414018647418933439755107594958463069459652259012733798548540222305452041994624661112591700219764950800130471209202627494989747204149538056559183034341143090983996418759064577781182808893327780439984759285274874526451585223346559403369778375979598522428048826225233652491808559479080592996700820607745155710940350323487438821239961073251264142734805674215530631039526399225267229088665969
 . . . . . . . . . . . . . . . . . . . . [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)
							81b724ed447608d3b6c76ec2ed2d7e3faa878e13
 . . . . . . . . . . . . . . . . [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)
							00ef0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016e22a99254000004030046304402201163c0152e4feea387a82208a7fd3919cdbe1a9e145e598ea94f586861cf9da1022070823ec5730e00b311e47f0ded9c6e04ed0f5c9c3b90229fdef2ede4da77ff7900760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016e22a992680000040300473045022100bde98945f3850c4fdfb223d5d36e46c3b0010989f3ca365eae7559ffd660c48b022010abf82e5ae5aa838065d644868fa6adf53d3a266368f62c349343f7d728ce63
 . . . . [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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