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:de
Serial 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.org

Check 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-----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-----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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