www.techforum.co.kr
Issued by Sectigo RSA Domain Validation Secure Server CA
About this certificate
This digital certificate with serial number 4b:8d:15:58:50:65:cb:80:a1:af:40:e5:3c:4d:44:25 was issued on by Sectigo Limited.
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=www.techforum.co.kr
Sectigo Limited
Organization:
Sectigo Limited
State / Province:
Greater Manchester
Locality: Salford
Country: GB
Locality: Salford
Country: GB
This certificate has expire since
Certificate Details
Serial Number (hex): 4b:8d:15:58:50:65:cb:80:a1:af:40:e5:3c:4d:44:25Serial Number (int): 100424646468483942410467489759353455653
Serial Number lenght: 127 bits, 16 octets
SubjectKeyId: b7:8a:08:11:03:88:ca:32:4c:0f:9a:23:a1:5e:29:b8:60:e4:16:36
AuthorityKeyId: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1
Fingerprint (sha1): 59:8f:59:1c:42:28:5f:7b:f8:e5:02:94:5b:c3:ed:3c:c8:78:e8:56
Fingerprint (sha256): a4:b2:78:89:b5:79:de:aa:e9:2f:75:01:e8:72:14:5c:a0:65:83:1a:bc:f1:d8:fc:86:67:9e:6d:70:6d:1c:21
Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt
Revocation information
OCSP Server: http://ocsp.sectigo.comCheck the revocation status for certificate www.techforum.co.kr
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.techforum.co.kr
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
www.techforum.co.kr
techforum.co.kr
techforum.co.kr
Other certificates including the domain name techforum.co.kr
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.techforum.co.kr in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGQDCCBSigAwIBAgIQS40VWFBly4Chr0DlPE1EJTANBgkqhkiG9w0BAQsFADCB jzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G A1UEBxMHU2FsZm9yZDEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD Ey5TZWN0aWdvIFJTQSBEb21haW4gVmFsaWRhdGlvbiBTZWN1cmUgU2VydmVyIENB MB4XDTIyMTEwNDAwMDAwMFoXDTIzMTEwNDIzNTk1OVowHjEcMBoGA1UEAxMTd3d3 LnRlY2hmb3J1bS5jby5rcjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB AKsoajgvqublP4ObXZsCtxdiNim67MWr2CEbYyNxPV5t9ulUHPV31EwbjxZoVvUv SJc6kJJeGjDD5tttmHoN1Gbyr5RtSa6zzL07/UCCV1C/SGm00gJbTfpLxG4qJCtE aefOsm2LF0dDiOfPvtPHao7rEfSrPooK5am/igWNLX7riZY9y9aSxwqEJtvxP8yv KEAOrHEPOq3AJ+M2+6Ak3DFvSC00IgVi/TFOINinwek7PWNQ6sH5IOzgQkXwa6Kc yxbC2CjK48lMpx0u6IdPpoBX9biHiBZYwa7z7drKam26zTR9USju6+BlphEz/Pyc GGtcrCkmokNPWNi2LNSsGgMCAwEAAaOCAwYwggMCMB8GA1UdIwQYMBaAFI2MXsRU rYrhd+mb+ZsF4bgBjWHhMB0GA1UdDgQWBBS3iggRA4jKMkwPmiOhXim4YOQWNjAO BgNVHQ8BAf8EBAMCBaAwDAYDVR0TAQH/BAIwADAdBgNVHSUEFjAUBggrBgEFBQcD AQYIKwYBBQUHAwIwSQYDVR0gBEIwQDA0BgsrBgEEAbIxAQICBzAlMCMGCCsGAQUF BwIBFhdodHRwczovL3NlY3RpZ28uY29tL0NQUzAIBgZngQwBAgEwgYQGCCsGAQUF BwEBBHgwdjBPBggrBgEFBQcwAoZDaHR0cDovL2NydC5zZWN0aWdvLmNvbS9TZWN0 aWdvUlNBRG9tYWluVmFsaWRhdGlvblNlY3VyZVNlcnZlckNBLmNydDAjBggrBgEF BQcwAYYXaHR0cDovL29jc3Auc2VjdGlnby5jb20wLwYDVR0RBCgwJoITd3d3LnRl Y2hmb3J1bS5jby5rcoIPdGVjaGZvcnVtLmNvLmtyMIIBfgYKKwYBBAHWeQIEAgSC AW4EggFqAWgAdgCt9776fP8QyIudPZwePhhqtGcpXc+xDCTKhYY069yCigAAAYRA GkrvAAAEAwBHMEUCIHnXQq1TX9ZMOTf6sl90C1e4btYmtx+9m71i2BIE4QYnAiEA xqPyvnAyGmsdfP84SuYc72zOCs0YGmkiuPGy6+ac+tgAdQB6MoxU2LcttiDqOOBS HumEFnAyE4VNO9IrwTpXo1LrUgAAAYRAGkrDAAAEAwBGMEQCIA8nmlwtqzSpZ0/D GXdZ4lK/eKaNJCtMc+b5n6md0V+TAiAlCUGtqxbwIH4WzQ4VGHyMXsG66KNrNn5i Ou+N5hKa2AB3AOg+0No+9QY1MudXKLyJa8kD08vREWvs62nhd31tBr1uAAABhEAa SosAAAQDAEgwRgIhAK1K3CBxLauVY8b1Fy+FgiLTQu2VUCrptk94ramTPl7JAiEA ue7I0K+hiz746lLCM2rbiD3j4/3ZsmNMeuqV1V14FbQwDQYJKoZIhvcNAQELBQAD ggEBALP7OwcVHNCg9RPSfCNj3RvAaHCjLLKTkTXhbJ37SQ2cD0wFCSnJoZrMY9/z k/68vX8zQJ504RaFIpcj6qeYAkoFpCrothNxpWx1QJm+HDoFIwl/qvwAgiGrZNbX ti/5SF990sHF1g1ZntOyeb2gcRZ/KWvCpVO34iWs/k93P24Rkr5CfQJTTswsAHpX skoNNnzCpcAw/mG/CaFPRCO3TQ0ibg/qTq4luzh3pWJiboNhMn2R0lQ52SfMmMff L6FOPyTHs6e0vpJi4+xfRA2pP4mpiGU6u7zpJY5xtgNH/9hSI3JG3CNPj8J67OU2 Cs2DjZ05yHcKzkPhy3AQGRxzxuU= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqyhqOC+q5uU/g5tdmwK3 F2I2KbrsxavYIRtjI3E9Xm326VQc9XfUTBuPFmhW9S9IlzqQkl4aMMPm222Yeg3U ZvKvlG1JrrPMvTv9QIJXUL9IabTSAltN+kvEbiokK0Rp586ybYsXR0OI58++08dq jusR9Ks+igrlqb+KBY0tfuuJlj3L1pLHCoQm2/E/zK8oQA6scQ86rcAn4zb7oCTc MW9ILTQiBWL9MU4g2KfB6Ts9Y1Dqwfkg7OBCRfBropzLFsLYKMrjyUynHS7oh0+m gFf1uIeIFljBrvPt2spqbbrNNH1RKO7r4GWmETP8/JwYa1ysKSaiQ09Y2LYs1Kwa AwIDAQAB -----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 100424646468483942410467489759353455653 . . . . . . . . [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 'GB' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Greater Manchester' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Salford' . . . . . . . . . . . . [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 'Sectigo Limited' . . . . . . . . . . . . [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 'Sectigo RSA Domain Validation Secure Server CA' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2022-11-04 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-04 23:59:59 +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 'www.techforum.co.kr' . . . . . . . . [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 21606679488942536842037511781456844658046622325168520872503428382123257400539206236075960434518037193940835319092350148511125230340151904266389334064310037224987830083273749818970472206389859662021369036900053609779544253242204179366352573231384473170228073981340619885326966628069684931969716982688977695155276161756261666455628513411515341776180568890634451290248038124093500550175783195139878933676896317197708649079950090483183230449445871114685361974134267958473068526421355748839409992383863733251602988736836780616456980255063880369999332367724065159926498598128272251456701058615230665531240985465332733581827 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1 . . . . . . . . . . . . . . . . [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) b78a08110388ca324c0f9a23a15e29b860e41636 . . . . . . . . . . . . . . . . [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 2.5.29.19 (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 2.5.29.37 (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 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://sectigo.com/CPS' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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.sectigo.com' . . . . . . . . . . . . . . . . [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 (40 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.techforum.co.kr' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'techforum.co.kr' . . . . . . . . . . . . . . . . [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 (366 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (362 bytes) 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 . . . . [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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