www.kotubankyousei.biz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:19:e2:76:65:41:bb:20:5d:38:41:26:45:7a:c9:d2:5a:40 was issued on by Let's Encrypt.
With 3 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.kotubankyousei.biz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:19:e2:76:65:41:bb:20:5d:38:41:26:45:7a:c9:d2:5a:40Serial Number (int): 270144937240112012978318999736880253262400
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 71:7d:b8:a5:48:d7:a6:5f:9b:79:54:3a:8f:b1:c1:83:47:3d:4f:3a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 45:df:32:0e:0d:c8:e2:56:58:a5:4e:1a:d5:d8:a6:45:7a:d3:7e:7e
Fingerprint (sha256): 62:92:50:0e:53:4e:9a:f4:37:0f:03:44:e6:86:fe:a5:90:46:73:19:c5:c6:60:e9:f9:7b:f8:ed:d8:60:62:67
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 www.kotubankyousei.biz
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.kotubankyousei.biz
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
8 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
kotubankyousei.biz
mail.kotubankyousei.biz
www.kotubankyousei.biz
mail.kotubankyousei.biz
www.kotubankyousei.biz
Other certificates including the domain name kotubankyousei.biz
(limited to 100 certificates)
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kotubankyousei.biz
www.kotubankyousei.biz
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kotubankyousei.biz
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kotubankyousei.biz
www.kotubankyousei.biz
www.kotubankyousei.biz
kotubankyousei.biz
www.kotubankyousei.biz
mail.kotubankyousei.biz
kotubankyousei.biz
www.kotubankyousei.biz
www.kotubankyousei.biz
kotubankyousei.biz
www.kotubankyousei.biz
kotubankyousei.biz
www.kotubankyousei.biz
mail.kotubankyousei.biz
mail.kotubankyousei.biz
mail.kotubankyousei.biz
kotubankyousei.biz
www.kotubankyousei.biz
mail.kotubankyousei.biz
mail.kotubankyousei.biz
kotubankyousei.biz
kotubankyousei.biz
mail.kotubankyousei.biz
www.kotubankyousei.biz
kotubankyousei.biz
mail.kotubankyousei.biz
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www.kotubankyousei.biz
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mail.kotubankyousei.biz
mail.kotubankyousei.biz
mail.kotubankyousei.biz
kotubankyousei.biz
mail.kotubankyousei.biz
Certificate
The complete raw certificate details for www.kotubankyousei.biz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFPTCCBCWgAwIBAgISAxnidmVBuyBdOEEmRXrJ0lpAMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNjExMzAyMTE3MDBaFw0x NzAyMjgyMTE3MDBaMCExHzAdBgNVBAMTFnd3dy5rb3R1YmFua3lvdXNlaS5iaXow ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC+Q3zjuea0VC8b+fLckY3Y er5c1lEke4FS10zFQkN9nD/iz3TlXqDFMxTvb+Aogj4jMrATT11eFaX/vfNjrkUn TorbcopRwuIU2c6JrjpURmrHJxSJKU7crqSHBJBjVZyVOrPcr43lLZJwcPhvaZGP XiAptigKoNw+7pcN3yiLnzeQub1IojSF2HHWZ22TBf4Lm4hISfSmb4UGA/KqDshR 8vu22cjdTBnlG+mpr1TrLLD/rVjfcmUnjxouiG8CUYvtDtj65lVCZqkv5ZODzKNc ZOvHzrT8kf9VfCgGajNJHXCcAO1936EOJCwZwDQ9TIXy3hYCz7C+RjNca44jQWLn AgMBAAGjggJEMIICQDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFHF9uKVI16Zfm3lU Oo+xwYNHPU86MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMHAGCCsG AQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29jc3AuaW50LXgzLmxldHNl bmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRz ZW5jcnlwdC5vcmcvME4GA1UdEQRHMEWCEmtvdHViYW5reW91c2VpLmJpeoIXbWFp bC5rb3R1YmFua3lvdXNlaS5iaXqCFnd3dy5rb3R1YmFua3lvdXNlaS5iaXowgf4G A1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEBMIHWMCYGCCsGAQUF BwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYIKwYBBQUHAgIwgZ4M gZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGllZCB1cG9uIGJ5IFJl bHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNlIHdpdGggdGhlIENl cnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xldHNlbmNyeXB0Lm9y Zy9yZXBvc2l0b3J5LzANBgkqhkiG9w0BAQsFAAOCAQEAapry4xukMMRamuxF6NQ3 P8MuGN31X56lTFaxl1dMfLOqVv37090IWOcK2pvq8MibadjQOw+teDXhodZp+abL /xbIGE2gIHFvJBfctH98m0St/kZ7n1FkvEtMc6xOx0SlGsphlyBAY8ny5GJV6Go+ 8XhYixmoriduAF22S8ZxXs5RyNxuZ5CG73gY3+rNs6XOFkdIIFVg5j66P5N7yWiJ urXqSbRxx8jmkGfPInrIF5W3gmEF6P5eZ0ZDeeM2vq18aeUlX8iXzuEUG8bl7G4A YyVjxwnk1hP4PaAwYNwTQTcwO/r+FN0JK3iwMyeng/4L8LUg+wHDJRGQUiX+UXEP vA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvkN847nmtFQvG/ny3JGN 2Hq+XNZRJHuBUtdMxUJDfZw/4s905V6gxTMU72/gKII+IzKwE09dXhWl/73zY65F J06K23KKUcLiFNnOia46VEZqxycUiSlO3K6khwSQY1WclTqz3K+N5S2ScHD4b2mR j14gKbYoCqDcPu6XDd8oi583kLm9SKI0hdhx1mdtkwX+C5uISEn0pm+FBgPyqg7I UfL7ttnI3UwZ5Rvpqa9U6yyw/61Y33JlJ48aLohvAlGL7Q7Y+uZVQmapL+WTg8yj XGTrx860/JH/VXwoBmozSR1wnADtfd+hDiQsGcA0PUyF8t4WAs+wvkYzXGuOI0Fi 5wIDAQAB -----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 270144937240112012978318999736880253262400 . . . . . . . . [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 2016-11-30 21:17:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-02-28 21:17:00 +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.kotubankyousei.biz' . . . . . . . . [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 24018557442644103907689638726331809729189852011783474055232999228902630279733833650463819992058238570773205388921424127778041198518933417319862220994468189413391224778864223281368781081121165788987506177692054270108416021333366485470115295615621224593521171776359069815254876767708111530812605561698169569956687901472530705475320107615003610567181739125645499597047107061742412018623920160086058589126597590679830550732579537700159081861332202252863151999325872511281311009875474408964052018467992340998469752702267367391618473150025929143412492393828750448477878236956905576578358841777717323703691264246337299899111 . . . . . . . . . . . . . . . . . . . . [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) 717db8a548d7a65f9b79543a8fb1c183473d4f3a . . . . . . . . . . . . . . . . [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 (100 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 (71 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kotubankyousei.biz' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.kotubankyousei.biz' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kotubankyousei.biz' . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [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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