rkobo.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:6f:94:84:9b:fd:00:b6:88:07:ae:e5:fc:d3:32:e7:ff:4f 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=rkobo.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:6f:94:84:9b:fd:00:b6:88:07:ae:e5:fc:d3:32:e7:ff:4fSerial Number (int): 299305614813884837879743544024365575700303
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 61:1a:43:4c:b3:aa:dd:11:22:ca:85:ff:58:3d:84:c4:34:36:c1:f9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 62:16:3b:b6:86:54:52:3e:82:41:6a:f7:34:f7:e3:75:3e:1c:98:05
Fingerprint (sha256): c4:3a:ad:c9:91:35:84:a8:32:bb:91:26:2d:d7:e8:e5:df:c8:14:c6:eb:79:00:1c:64:71:96:17:5c:01:93:24
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate rkobo.jp
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for rkobo.jp
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
rkobo.jp
Other certificates including the domain name rkobo.jp
(limited to 100 certificates)
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rkobo.jp
Certificate
The complete raw certificate details for rkobo.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF/DCCBOSgAwIBAgISA2+UhJv9ALaIB67l/NMy5/9PMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA1MDExMTEzMzlaFw0x ODA3MzAxMTEzMzlaMBMxETAPBgNVBAMTCHJrb2JvLmpwMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEAu4iF07bdKSK/iR7/5GIBb28kL0sEFgt8e56660wj 94TKum3/EKGdgjUGG0ZskgF6Fn1q3yNH7KRfMB/Zlie0FVT93mxnfEF4vA9vFNGS 5iQG5KpDBqZ7zftqDAq1KoB9PyH4mjDaD64DYMMdijbH5mpT2UbBOBD8u+csrfUU jIFFmcS7g8LQAPOsAKJYVgomtt7cjAjZMOG7jCGOLP73+TqK77NhEr38Y/XZkKZQ xTBQMJFy3WOhzfdxVuNlNZayXkX/D2gdH2XsganzqLO/QXCHfThiW/jvDen7D21q VZqpD1s58b3geNjkg8BSeqzkjvLVXoAIRIthFGf7O6EV1wIDAQABo4IDETCCAw0w DgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAM BgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRhGkNMs6rdESLKhf9YPYTENDbB+TAfBgNV HSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRjMGEwLgYI KwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5vcmcwLwYI KwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5vcmcvMBMG A1UdEQQMMAqCCHJrb2JvLmpwMIH+BgNVHSAEgfYwgfMwCAYGZ4EMAQIBMIHmBgsr BgEEAYLfEwEBATCB1jAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlw dC5vcmcwgasGCCsGAQUFBwICMIGeDIGbVGhpcyBDZXJ0aWZpY2F0ZSBtYXkgb25s eSBiZSByZWxpZWQgdXBvbiBieSBSZWx5aW5nIFBhcnRpZXMgYW5kIG9ubHkgaW4g YWNjb3JkYW5jZSB3aXRoIHRoZSBDZXJ0aWZpY2F0ZSBQb2xpY3kgZm91bmQgYXQg aHR0cHM6Ly9sZXRzZW5jcnlwdC5vcmcvcmVwb3NpdG9yeS8wggEFBgorBgEEAdZ5 AgQCBIH2BIHzAPEAdgApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0eAAA AWMbn16KAAAEAwBHMEUCIQCJEoEf5MtEyEf785QA2JpwPGGbuAeVW8CWbJ2kbDOv iQIgTGqkWx60PQfxkv46zrWXOL1fYb+p6v5WptWpz0dVzsUAdwDbdK/uyynssf7K PnFtLOW5qrs294Rxg8ddnU83th+/ZAAAAWMbn15oAAAEAwBIMEYCIQCnclOi3ZXS EkiA7TGXB9yKrorgn//iZk1cwtEQ434P3gIhAOpadfzqxdPPDw/Po+CPGbDk1bO6 mvX6C9YHciMG+9FnMA0GCSqGSIb3DQEBCwUAA4IBAQAWczyT2fqg4iK6sOnzGNGc fOZipEEtd0pirpB/2qkyVTow8gBiqKMdR7mQ2Sj0hhHdLfxnhmZrjP9y/AZYaPRM Bz9D4K68Ga+8Zcjf68CgwNwyPeZumGfoF/QLH4QEvJIivxKlAumiFeEXMu0323db hZwjkKWVobJum39H1EJ6MlzJ5lPSjBcKhQfusLxOVeuW0CRzUHtooSGeb3l1/G2M /tNcfRIbb3bQzb3gMlAmhdeDjcu5SgxLUgVVSWSYPo75MQJota89w80M1+nNbB2n kvyvCvzWAy8X4id1+LdtoOydVV0OwVtGJz7VCDD+jVzgQevFVExxTv2n3DjPKaQO -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu4iF07bdKSK/iR7/5GIB b28kL0sEFgt8e56660wj94TKum3/EKGdgjUGG0ZskgF6Fn1q3yNH7KRfMB/Zlie0 FVT93mxnfEF4vA9vFNGS5iQG5KpDBqZ7zftqDAq1KoB9PyH4mjDaD64DYMMdijbH 5mpT2UbBOBD8u+csrfUUjIFFmcS7g8LQAPOsAKJYVgomtt7cjAjZMOG7jCGOLP73 +TqK77NhEr38Y/XZkKZQxTBQMJFy3WOhzfdxVuNlNZayXkX/D2gdH2XsganzqLO/ QXCHfThiW/jvDen7D21qVZqpD1s58b3geNjkg8BSeqzkjvLVXoAIRIthFGf7O6EV 1wIDAQAB -----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 299305614813884837879743544024365575700303 . . . . . . . . [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 2018-05-01 11:13:39 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-07-30 11:13:39 +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 'rkobo.jp' . . . . . . . . [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 23673884911594813416301943408786335711920853787462306996875423960936835957055557313719572222080240118975704209694385043796659843782758689350728120295394165958919936500691743833395716441387130000103890430883198393443313538852531180537436665636912595640692641077714662948405395654358453366959993363509803702096295984176461574854827263062143235550177350783766231514333988684118820602828068167123842952351821924059987875076634209039080412206884099805061154630272689592293036162544948614480812591771363464838378990078032222845886158562151034868848704818649055200269931464689732514047607086912023767696518622425574132487639 . . . . . . . . . . . . . . . . . . . . [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) 611a434cb3aadd1122ca85ff583d84c43436c1f9 . . . . . . . . . . . . . . . . [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 (12 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rkobo.jp' . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001631b9f5e8a00000403004730450221008912811fe4cb44c847fbf39400d89a703c619bb807955bc0966c9da46c33af8902204c6aa45b1eb43d07f192fe3aceb59738bd5f61bfa9eafe56a6d5a9cf4755cec5007700db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf64000001631b9f5e680000040300483046022100a77253a2dd95d2124880ed319707dc8aae8ae09fffe2664d5cc2d110e37e0fde022100ea5a75fceac5d3cf0f0fcfa3e08f19b0e4d5b3ba9af5fa0bd607722306fbd167 . . . . [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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