www.dduco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:3f:af:a2:b6:9b:19:23:0a:aa:1b:c3:f0:64:c7:5a:c6:20 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=www.dduco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:3f:af:a2:b6:9b:19:23:0a:aa:1b:c3:f0:64:c7:5a:c6:20Serial Number (int): 283008106666339998600224108604094248830496
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 42:34:84:87:18:40:76:da:76:b4:2a:8a:c4:db:ad:2e:a7:65:6d:d1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): ac:60:41:48:23:b5:5c:68:26:e1:5c:95:93:69:52:bb:87:23:ad:98
Fingerprint (sha256): f4:bf:53:29:ee:2d:45:53:fd:89:e9:aa:7a:3f:ac:74:eb:f4:8e:d2:3a:b5:6d:1f:d0:2e:09:46:db:04:0a:28
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.dduco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.dduco.com
Public Key Algorithm
RSA
Key Size
4096
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.dduco.com
Other certificates including the domain name dduco.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.dduco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGUDCCBTigAwIBAgISAz+vorabGSMKqhvD8GTHWsYgMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMTMxMDIxMjVaFw0y MDAxMTExMDIxMjVaMBgxFjAUBgNVBAMTDXd3dy5kZHVjby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDfgnl303NPdkdH5B/1hXAe6pl4lQ3JSr0f q3DvYY2arLszl/DZf4TJlKmpdpdAesb+6UvmVOiPs9NxXvh3XP6CyMhFhGAai0Gt 7g74wQkMyYDOdd8ajnenWCJyPN/C06rtqoe6PbxeJdYMUGTWHz9LEXiyxyvuOjuM F40VLnweq+ourb2plTQ4JAyU++cEH2h7r1JdJenfYweRajs1ywVMpNs2mh5h/5m5 TcoVLIshvIfXDz/73jWM0bEPf1Vf2FhIgHpsuEaX4gynbIJx5lY/oNFqPIpqueHe nYvM9F/mF7mf4VcY8cl6JlIlBp4ixEN9o+J/UrKAUAEoyBV3QQc+rUQ17eRHx4wO GNYmfw14uy3+Xwy3uwvZlw8HO+/coQ2szElx09g38O8PkRIEoUgY+LwNDFXTxZAk rWJ7efRA98ONSva2G85dRE/grNP8qMKMuooSHgEoTT5NGTkEqFA/Deu4Nl9UdN3s Imi1ZlcckdYFp1YRf3GHYBnvucDxoY/6/JbL7zogCea38qqe2PC7GR05nE3tPuHk eTXxEe6aGNSRRP3TQ4+KgsiMLAGaP9OOmauVY8Qq4ncXWll9kfO4ncbgZO+QDbIJ G55I4o+HW5SnfwmBvGpt4M7QaO+waN5nVF7xklrBUUtuAef+VC8uBv4RQXEw48GY QCBXeIJW/wIDAQABo4ICYDCCAlwwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRCNISH GEB22na0KorE260up2Vt0TAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5kZHVjby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggECBgorBgEEAdZ5AgQCBIHzBIHw AO4AdQDwlaRZ8gDRgkAQLS+TiI6tS/4dR+OZ4dA0prCoqo6ycwAAAW3E2gXyAAAE AwBGMEQCIBlOP1B11Z5GvdcJdKBkQGvTONZqXaPL3np+3Rn7Aj1tAiAs5ZMEMBFF a7MbXVzzqIHCBZHpZEzXxfTxrzBc6/xZiwB1ACk8UZZUyDlluqpQ/FgH1Ldvv1h6 KXLcpMMM9OVFR/R4AAABbcTaBe0AAAQDAEYwRAIgLkAar1WGjb6Vybrf1/DvEYGu xyvzahVuARIOL07+qbICIEo5s9iCIsYAuDsxKYVG/5EaJnr1BCGNmI8HPMIHvkAk MA0GCSqGSIb3DQEBCwUAA4IBAQAHzpFq1uI2EcesfaTTVodabLEphEUpPrPlAIaP 5GxFQr7IuRpYaZQ0z2AQTifX3Widc9nZ1To72C6uZGPfRULar6h/7VGUGs4s98QM pEAgbVepWQfNLECbY0IerddDBMWkzSCOLK0+SJUDP6tNw7mA7YyXBFqs3k+Ot/J3 bobzTLSVFioGrhiPkn1oF8KGs/rvVbXHBByUTIJSksP9L3QlAsRocbiaLT7npMMs DP4eVCbezrZmvvTGia/FSyvwulQmI+niNfzvG/kHOJ7ijh/j3itzAD4rP1rITDG0 LRqZyPWOzfOak5IuYFAfHv8359PUxbuTfJCVq5khR+5oUgkC -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA34J5d9NzT3ZHR+Qf9YVw HuqZeJUNyUq9H6tw72GNmqy7M5fw2X+EyZSpqXaXQHrG/ulL5lToj7PTcV74d1z+ gsjIRYRgGotBre4O+MEJDMmAznXfGo53p1gicjzfwtOq7aqHuj28XiXWDFBk1h8/ SxF4sscr7jo7jBeNFS58HqvqLq29qZU0OCQMlPvnBB9oe69SXSXp32MHkWo7NcsF TKTbNpoeYf+ZuU3KFSyLIbyH1w8/+941jNGxD39VX9hYSIB6bLhGl+IMp2yCceZW P6DRajyKarnh3p2LzPRf5he5n+FXGPHJeiZSJQaeIsRDfaPif1KygFABKMgVd0EH Pq1ENe3kR8eMDhjWJn8NeLst/l8Mt7sL2ZcPBzvv3KENrMxJcdPYN/DvD5ESBKFI GPi8DQxV08WQJK1ie3n0QPfDjUr2thvOXURP4KzT/KjCjLqKEh4BKE0+TRk5BKhQ Pw3ruDZfVHTd7CJotWZXHJHWBadWEX9xh2AZ77nA8aGP+vyWy+86IAnmt/Kqntjw uxkdOZxN7T7h5Hk18RHumhjUkUT900OPioLIjCwBmj/TjpmrlWPEKuJ3F1pZfZHz uJ3G4GTvkA2yCRueSOKPh1uUp38JgbxqbeDO0GjvsGjeZ1Re8ZJawVFLbgHn/lQv Lgb+EUFxMOPBmEAgV3iCVv8CAwEAAQ== -----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 283008106666339998600224108604094248830496 . . . . . . . . [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 2019-10-13 10:21:25 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-11 10:21:25 +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.dduco.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 911839882861174281505992643249778589900080699035905661968692725822893325022479328443011154344705427370396729198778030171254260553570520734771417262195059391422744972249787237174276502830750109224085089847147462466853578304778912370501750438686981994380229528031756553449851417324286019154545212253286422230718316944122305674757182534613251145684610806659015442260491440423019142175985793896866561668892000528342436742131136030615523652122163652140204424943345234193275818595960348317107969294537757735148748585823325042097683280997880884554547519009963800815350844647779789955334519186596996676542641705716888177872933327210628214108980545155750840817279278391045718113107031860182104189510120937226567013546485048699298598980019594380352446775376742716298034966898466807883497725447198326733591150558795139129474517624305288934940984769715813078152193522405198485829803543489721925867091941336902869714084034705195165644348124338328496344006008843836275175521002196178631339427544243741328018089084885872816468624777623472494633185091659039519252448989245501974118943037928675439892855433529437326472868148649370791690315938421382262753555932748144862416631360481906092610566623700723733340268845134349466129973209430171395826013951 . . . . . . . . . . . . . . . . . . . . [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) 42348487184076da76b42a8ac4dbad2ea7656dd1 . . . . . . . . . . . . . . . . [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 (17 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.dduco.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 (69 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes) 00ee007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016dc4da05f200000403004630440220194e3f5075d59e46bdd70974a064406bd338d66a5da3cbde7a7edd19fb023d6d02202ce593043011456bb31b5d5cf3a881c20591e9644cd7c5f4f1af305cebfc598b007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dc4da05ed000004030046304402202e401aaf55868dbe95c9badfd7f0ef1181aec72bf36a156e01120e2f4efea9b202204a39b3d88222c600b83b31298546ff911a267af504218d988f073cc207be4024 . . . . [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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