knowledge-conference.project-a.com
Issued by R3
About this certificate
This digital certificate with serial number 04:c6:be:2e:21:aa:d2:08:4c:69:73:73:df:a8:6e:44:22:de was issued on by Let's Encrypt.
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=knowledge-conference.project-a.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:c6:be:2e:21:aa:d2:08:4c:69:73:73:df:a8:6e:44:22:deSerial Number (int): 416077845225094735402410586853216249717470
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: cd:38:a8:33:4a:a2:08:ee:c9:5d:42:bb:c6:6b:89:a2:6e:b6:98:9d
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 4f:56:de:e7:81:7e:c4:0e:c6:db:c9:f9:b2:6d:90:bd:a2:3c:dc:fa
Fingerprint (sha256): 55:61:71:6b:66:e1:bb:e8:ae:b8:f6:ea:34:61:53:e3:f0:3c:83:8e:6b:71:b6:44:7a:31:32:a7:59:8e:fa:35
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate knowledge-conference.project-a.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for knowledge-conference.project-a.com
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
knowledge-conference.project-a.com
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Certificate
The complete raw certificate details for knowledge-conference.project-a.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFETCCA/mgAwIBAgISBMa+LiGq0ghMaXNz36huRCLeMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA3MTQxODE1NTdaFw0yMzEwMTIxODE1NTZaMC0xKzApBgNVBAMT Imtub3dsZWRnZS1jb25mZXJlbmNlLnByb2plY3QtYS5jb20wggEiMA0GCSqGSIb3 DQEBAQUAA4IBDwAwggEKAoIBAQDb1FEl4ZhUkxGTBKZQPmcUO5EqJuut07hHYnTT oKE3I58oxuS0zeQewtmXVDSG6odWYs2ecbKOp5ZepKifvu8G7uW7wKKxawWd05HU abiV+mw49UpgsreA0j+BFJ0mSmTAD8I8viC5xMRJUFHgyufHU7btBxRUokPtlVHE fQualCjWgp8arZOHiu3drr7W0LwqR6SMB8iPYbDGozRBPJNtOrTVeoaF9g2Men2l PXM3/zfWNvGN8SIHK+DGA33HmBlVDwWoJdah9cjrJU4HAS76Wj/Pp53eYuZxyO0P vL7gt3zvVJhtUe2RCoeK6gykmX1FD2wsev4NO2hNiAwdXrqZAgMBAAGjggIkMIIC IDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMC MAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFM04qDNKogjuyV1Cu8ZriaJutpidMB8G A1UdIwQYMBaAFBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAh BggrBgEFBQcwAYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZo dHRwOi8vcjMuaS5sZW5jci5vcmcvMC0GA1UdEQQmMCSCImtub3dsZWRnZS1jb25m ZXJlbmNlLnByb2plY3QtYS5jb20wEwYDVR0gBAwwCjAIBgZngQwBAgEwggEEBgor BgEEAdZ5AgQCBIH1BIHyAPAAdgC3Pvsk35xNunXyOcW6WPRsXfxCz3qfNcSeHQmB Je20mQAAAYlV1NH/AAAEAwBHMEUCIQC/o7YrBNt0C7ol/FFFsJ0A+Y/7MfevO09j TDtuDa4iKQIgAem37OIK1GdR/oSaUlMpr0yv/Thbc8iCiwtwZ9yQKsUAdgDoPtDa PvUGNTLnVyi8iWvJA9PL0RFr7Otp4Xd9bQa9bgAAAYlV1NILAAAEAwBHMEUCIQCo c6sY7+Ts/055S9dz9nkB3mpIuLnNgJ55EyOXCYrNuwIgYhJlroQoDYZOpqPjiUCq +/6HuXRj9NEt8y6id162jYcwDQYJKoZIhvcNAQELBQADggEBAE8Fsojnwoih8jBL b+Pb+snaQ63lTNx4dPXKQB3y61p+MTpvo8mi3DZQnfLDGmTrjgT7I9I+ptVBOCQY vG5NNbl0mjZUhBx1JHl7ppN+tJWH3wR0Zk3iUB+1qDifNy6K59b0RV4J1ROWA8y7 X4LdFTO5W4HfWCSvbew+SO3lEDF29wn0Lwqsk7cJiImUjyYyAZXCxqrSehWUdkLg Zvp6zS0PmkkeJcM0EFb7iexB6Itb9Ub4TJb7iAb3GFM9K1FdoeFRdJglYmo0pVN4 ryJKZ1d1JNCH+U5w4kHjzcerN+JA7QaaIwSHSrjiKxqN6t9c2RL2YkCLTn+lGk0i 7IjvA3k= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA29RRJeGYVJMRkwSmUD5n FDuRKibrrdO4R2J006ChNyOfKMbktM3kHsLZl1Q0huqHVmLNnnGyjqeWXqSon77v Bu7lu8CisWsFndOR1Gm4lfpsOPVKYLK3gNI/gRSdJkpkwA/CPL4gucTESVBR4Mrn x1O27QcUVKJD7ZVRxH0LmpQo1oKfGq2Th4rt3a6+1tC8KkekjAfIj2GwxqM0QTyT bTq01XqGhfYNjHp9pT1zN/831jbxjfEiByvgxgN9x5gZVQ8FqCXWofXI6yVOBwEu +lo/z6ed3mLmccjtD7y+4Ld871SYbVHtkQqHiuoMpJl9RQ9sLHr+DTtoTYgMHV66 mQIDAQAB -----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 416077845225094735402410586853216249717470 . . . . . . . . [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 'R3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-07-14 18:15:57 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-12 18:15:56 +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 'knowledge-conference.project-a.com' . . . . . . . . [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 27750886194637016759126570378415004547067599189944132046620816394573260791316803813776219001088559933663835234477108319898731393921139857661982206140076546621961222348586670677285292437694873722708963273503549552271404433314422549569465776854544516032867608938098200715245796324535015759068119508339296178331725963794927760979939851011919600352136071537045203674958715023662975545962843245118305449262612289208768740308511693839541684757578553356403775008599439056714804279168542935855992481071181466294427011046518122940903666248182568729438996493360071290604199177239087798091044528953917513510712097550793925638809 . . . . . . . . . . . . . . . . . . . . [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) cd38a8334aa208eec95d42bbc66b89a26eb6989d . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (38 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'knowledge-conference.project-a.com' . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018955d4d1ff0000040300473045022100bfa3b62b04db740bba25fc5145b09d00f98ffb31f7af3b4f634c3b6e0dae2229022001e9b7ece20ad46751fe849a525329af4caffd385b73c8828b0b7067dc902ac5007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018955d4d20b0000040300473045022100a873ab18efe4ecff4e794bd773f67901de6a48b8b9cd809e79132397098acdbb0220621265ae84280d864ea6a3e38940aafbfe87b97463f4d12df32ea2775eb68d87 . . . . [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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