www.dduco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:42:80:c2:1b:b4:14:78:d6:c6:13:fa:3c:f1:40:a6:b8:7d 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): 04:42:80:c2:1b:b4:14:78:d6:c6:13:fa:3c:f1:40:a6:b8:7dSerial Number (int): 371078928994766414500067729381656594135165
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 5c:cd:93:41:84:cb:66:a6:28:8f:1d:63:88:91:66:c2:bf:9e:1f:5d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 57:fa:f4:b4:5d:ff:f0:a4:b2:b7:41:f1:34:6c:52:a6:8e:93:65:27
Fingerprint (sha256): a6:a4:a6:c3:56:54:2e:72:db:8a:23:e8:80:cb:fa:95:cb:2f:c6:15:2b:a0:33:8e:f7:f4:a3:09:f0:d5:1d:f4
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----- MIIGUzCCBTugAwIBAgISBEKAwhu0FHjWxhP6PPFAprh9MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMDExNzQ4MTVaFw0y MDAzMzExNzQ4MTVaMBgxFjAUBgNVBAMTDXd3dy5kZHVjby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQC/xXpDVc99I8ndIPg2GKGftzGfV/m7C1Ys POae8XQWAJzYGWt+ESgR60K3znmbFGdN+a8xfMjy0gChD8YWwSrVDfWdOVHyM3UL gXtBoQ8mzXE/g9JxRJgQvF2IYuK9kBOYUkMmmrxYvpXmQ4Buu359yT6nWvsNZ2e1 FIidsKPyBkUYzMGj4W4xJQXQWbLXE6oJ/ksyQGTB09dIyt2nvnPeXClJnhKq7hUg QFwpreNV3RXtDSuJC+S+MmUXzvb8fJYLeD6VnKZhz0gVNM/Pgx1QeoF3ki9rxk1U 2HMzgh1KmSaMUhfzSIHvykNtS/rY87yBQeJtNrhwubdKomQkV2/6bwweS2qhUGA4 YjjeP59nqaCx4R+92bZ0ntP3jRrWmBoPrRUnpYsOcdqbhQ+nvZTGC/8mTU9YPISS ospDNB5eX9ifDvOKKS7AJREntPxlMUiHuKN4hsAEE14DFn4t/KXOFRaM2rJQW+3a zdxe1XDJoSZDTPNxizSI9rqJ+ozurc5m0H/ltZAJCxM+RsmsTtcZdYh4Ohk+g6Ur jt/RC2nxb8tU6BerxPSP34wnN84qzwMgWd9oCoBdrA17ZoZLPETbc9cW2jvLu5L8 VpZXfFMDJThoVayIV0hQjwjmIlrh2tW+hZHnfvMcRpphkG+ak/3km98WCV6disFe 7MsLywfYhwIDAQABo4ICYzCCAl8wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRczZNB hMtmpiiPHWOIkWbCv54fXTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5kZHVjby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQCBIH2BIHz APEAdgDwlaRZ8gDRgkAQLS+TiI6tS/4dR+OZ4dA0prCoqo6ycwAAAW9ib9ofAAAE AwBHMEUCICOwb8MNk+bEZ2ImbWcJdizGmi9oHpKCj7sgrjlpfubJAiEA0A9ynX1D pZ6ssslKloD3DtDCZS0YSx8fbUmG9rN6Z1wAdwCyHgXMi6LNiiBOh2b5K7mKJSBn a9r6cOeySVMt74uQXgAAAW9ib9oPAAAEAwBIMEYCIQD2u5RtB6K03usB9mv3ykxQ vDyl5p6X73Q/dvlej35YjAIhAKR50JzBXN5bpS/YCfobbnUzK/0J2RzJS8w5jQza s4ePMA0GCSqGSIb3DQEBCwUAA4IBAQBDpv5mFHhefR4nZ6HeBrPWNn6M0tSCwcGe EgL0L/rlf552riZIG5xTpDnUztwKgvNaGHMlSkzJN9LKlT23cPTT4BbW0m2JLoBX R+7OOSB7/+V5gzddBhnRgBKVrkUhOIIaEnkFmCzw0SB/t7ynkDF6VyQ/MjJOH4sh wxDt//pvnzOFp+HW7bN4CSeOF9xtuOwwuADkFTC+gWC1kvtDgcxXX8hUVPQ4sYwi UdJdt+vuigAdCi42GlPKZtweeNqUDWVKEjkmbggVn5buGs5WKvr/rIipAmxjVnf1 c8qVsRWhuA1jf6XSPURcMa5CpJgOVwbPHez3UiWafN7k4ZEmfRzW -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAv8V6Q1XPfSPJ3SD4Nhih n7cxn1f5uwtWLDzmnvF0FgCc2BlrfhEoEetCt855mxRnTfmvMXzI8tIAoQ/GFsEq 1Q31nTlR8jN1C4F7QaEPJs1xP4PScUSYELxdiGLivZATmFJDJpq8WL6V5kOAbrt+ fck+p1r7DWdntRSInbCj8gZFGMzBo+FuMSUF0Fmy1xOqCf5LMkBkwdPXSMrdp75z 3lwpSZ4Squ4VIEBcKa3jVd0V7Q0riQvkvjJlF872/HyWC3g+lZymYc9IFTTPz4Md UHqBd5Iva8ZNVNhzM4IdSpkmjFIX80iB78pDbUv62PO8gUHibTa4cLm3SqJkJFdv +m8MHktqoVBgOGI43j+fZ6mgseEfvdm2dJ7T940a1pgaD60VJ6WLDnHam4UPp72U xgv/Jk1PWDyEkqLKQzQeXl/Ynw7ziikuwCURJ7T8ZTFIh7ijeIbABBNeAxZ+Lfyl zhUWjNqyUFvt2s3cXtVwyaEmQ0zzcYs0iPa6ifqM7q3OZtB/5bWQCQsTPkbJrE7X GXWIeDoZPoOlK47f0Qtp8W/LVOgXq8T0j9+MJzfOKs8DIFnfaAqAXawNe2aGSzxE 23PXFto7y7uS/FaWV3xTAyU4aFWsiFdIUI8I5iJa4drVvoWR537zHEaaYZBvmpP9 5JvfFglenYrBXuzLC8sH2IcCAwEAAQ== -----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 371078928994766414500067729381656594135165 . . . . . . . . [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 2020-01-01 17:48:15 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-31 17:48:15 +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 782359041516926284349014283780066302417177368265210209329224041174874446275893561883755690461576664552515358890493171356313826429348924516977552099084342255173938172448529058239748956408403035452312301659138450719172717459169505608078679187049173800325896661681151813458666074800614418177294166861951452697568922102656061875677187366884642162038898058785029302526079732419380429222358293302558349545823640117116500924870565392401508780321709027407965926007173837791096303091104834146494127704857444999301534473252446337363710898758066727494161770764242717280045635758751153581255696141509351882446759778158803393673629739299619711975891568634565121138307856500204190633255010194764112260048977453697265681916726333045267366564236804788477707977264461611631437112905459713717833791562693568750596007199618383234258771571302408635141766403549341051906300807631374559265917673189495953667368099525537297909364880901214306433661901356156460312034810737764020539389626506400921400576628934712421027567345596931235884623602280243695915861856884920108442010718544048700240469355976412414954785270934655487887333398615649504152691565243716561608435523234656204989954014917440634452987094222771076596992144461770012308451345870982537972013191 . . . . . . . . . . . . . . . . . . . . [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) 5ccd934184cb66a6288f1d63889166c2bf9e1f5d . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f626fda1f0000040300473045022023b06fc30d93e6c46762266d6709762cc69a2f681e92828fbb20ae39697ee6c9022100d00f729d7d43a59eacb2c94a9680f70ed0c2652d184b1f1f6d4986f6b37a675c007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f626fda0f0000040300483046022100f6bb946d07a2b4deeb01f66bf7ca4c50bc3ca5e69e97ef743f76f95e8f7e588c022100a479d09cc15cde5ba52fd809fa1b6e75332bfd09d91cc94bcc398d0cdab3878f . . . . [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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