dduco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c6:93:f1:b7:65:4c:5f:21:d5:1d:f9:ff:64:71:30:1a:db 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=dduco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:c6:93:f1:b7:65:4c:5f:21:d5:1d:f9:ff:64:71:30:1a:dbSerial Number (int): 328909418024256482983060288021555837934299
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: ce:1d:9a:73:8d:6f:b1:e5:84:e6:9e:ed:f6:4c:31:19:3d:8b:0d:40
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 1d:49:33:ff:70:eb:06:d1:3b:84:5f:2c:04:04:98:03:bb:fa:f5:33
Fingerprint (sha256): 5c:ad:f6:b1:af:12:52:37:fd:0f:5f:0f:89:11:8e:ae:47:ad:93:19:91:59:09:c8:61:8d:7a:af:ce:83:ab:cb
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate dduco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for 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
dduco.com
Other certificates including the domain name dduco.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for dduco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGSjCCBTKgAwIBAgISA8aT8bdlTF8h1R35/2RxMBrbMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMDExNzMwMzVaFw0y MDAzMzExNzMwMzVaMBQxEjAQBgNVBAMTCWRkdWNvLmNvbTCCAiIwDQYJKoZIhvcN AQEBBQADggIPADCCAgoCggIBAJriVZSiq84AtZV2CqSYJjKFbZNVK90DS+XqEstr MDN+bCi+bOZ9JcAN8a9ar0MGfC6B7xKYTcAM0c9Yj4Y/aPQS7qTQtAi1i6+MC9+x v9F8SR3movPj3UVIi6LHfaIVgXMgOsUqMLVjXiCmKDxXbaw+0T5MbQ3ruR2GXGpT K2vQoty4Xw7dkL9Tuwe1XM2fiRhgkvo6zb1QbI3WDp0gTHotijXztMKWXJP7LbC4 JBlabbI4Z6S+8TPveXn4CV9J9Rg5ZoWZgdQeR1klKDt9QmaPC10T5p01YqbQfbSF jBAuZl2sfmyCymHhgTiv0OU1Q7EbqlKyWm1menXmYJn0dECkACu54kTNCBdAjDIz Ab5uhrmMlt8nmg7AlAzbkvtbaaOs6l9/V4PzCJSKdRSpqTX9I0vEMEovLI99r5Z1 8oABeMKfTi0J2wPZpJp16X/x18agTXKgBa3/5PgfluMX29bQ8hY+mQVWtYreydLG VPAT2BggBdrZo/cBrm0g2lGvoOR7UNjQMGuWqukENrTgnwAb4A/ds89Z/ZlFt8ws mxo8R8Cr6+3NRAshO3+BVG+KPDMM8/+eaKwCe9VcEAGjaUyyCC4uWPLDGcBCn2do T7gwlTsG4Kmma1PeZyll9drUlJFD7SB26sxhWtwtnrlwcano0WeUdC58L3RjYyJF FqqdAgMBAAGjggJeMIICWjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFM4dmnONb7Hl hOae7fZMMRk9iw1AMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8G CCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZy8wFAYDVR0RBA0wC4IJZGR1Y28uY29tMEwGA1UdIARFMEMw CAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9j cHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHUA8JWk WfIA0YJAEC0vk4iOrUv+HUfjmeHQNKawqKqOsnMAAAFvYl+vWQAABAMARjBEAiB6 LKBC9OnZuFGUBYxLvUpLDoBrOhL0mAQyHuVX0qY/zgIgOpCD+6Co7OzS/TzyklH9 LIQE/TkMeWVvKgPOftf/cfAAdwAHt1wb5X1o//Gwxh0jFce65ld8V5S3au68YToa adOiHAAAAW9iX699AAAEAwBIMEYCIQC3OJhBFlKLj60fyts1S4+k2R4Qs4jCdMeL u9r1eSoZKAIhAPo7SHQ+gr031o+PjLYf1sxEjmVgTm6xOr8JvRxj9p07MA0GCSqG SIb3DQEBCwUAA4IBAQB+u6v+jp5DSk1qji3r+GhmGxMl5MnwgoR2I56hAzeLEnV5 Mxi+P3BZ5Xgxn98NUWsuX714vgoJAd/fnyRzyMmLOZp/phnCsBS6N6wV1utAByuO LMAObozLJ82HGsnH4cKmYwjvWnNfrDtJDUmfIUvbFmyc781vd0NnW06mu/brMijv kCx2lz2OzmAoMHj7Y/UmpRGwjf1r6r04nckxywF5S9XkRq0+bGILrdZDYteDO3TV Q2VJ8swJMREX2K1+zDpT02vUzqstmBWZsxhsOZx6kw8Xk72Q9ITzqiHiUBLt5tCM BKd40BnZhwlTOLLFWODlad7lBWZnNkf3bLbBG/18 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAmuJVlKKrzgC1lXYKpJgm MoVtk1Ur3QNL5eoSy2swM35sKL5s5n0lwA3xr1qvQwZ8LoHvEphNwAzRz1iPhj9o 9BLupNC0CLWLr4wL37G/0XxJHeai8+PdRUiLosd9ohWBcyA6xSowtWNeIKYoPFdt rD7RPkxtDeu5HYZcalMra9Ci3LhfDt2Qv1O7B7VczZ+JGGCS+jrNvVBsjdYOnSBM ei2KNfO0wpZck/stsLgkGVptsjhnpL7xM+95efgJX0n1GDlmhZmB1B5HWSUoO31C Zo8LXRPmnTViptB9tIWMEC5mXax+bILKYeGBOK/Q5TVDsRuqUrJabWZ6deZgmfR0 QKQAK7niRM0IF0CMMjMBvm6GuYyW3yeaDsCUDNuS+1tpo6zqX39Xg/MIlIp1FKmp Nf0jS8QwSi8sj32vlnXygAF4wp9OLQnbA9mkmnXpf/HXxqBNcqAFrf/k+B+W4xfb 1tDyFj6ZBVa1it7J0sZU8BPYGCAF2tmj9wGubSDaUa+g5HtQ2NAwa5aq6QQ2tOCf ABvgD92zz1n9mUW3zCybGjxHwKvr7c1ECyE7f4FUb4o8Mwzz/55orAJ71VwQAaNp TLIILi5Y8sMZwEKfZ2hPuDCVOwbgqaZrU95nKWX12tSUkUPtIHbqzGFa3C2euXBx qejRZ5R0LnwvdGNjIkUWqp0CAwEAAQ== -----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 328909418024256482983060288021555837934299 . . . . . . . . [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 17:30:35 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-31 17:30:35 +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 '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 631872074683347348374822133226487909229889452071935499825764698976307414673356483643381797641403371389112677535607632636019636119050397907340485617338325468209847633148019435854073873284113649562320290447692424664665915630291933532908695906059502315083834656983332094116856831058200827396181821225021447096116620359800095445853575416670855954757186143280392608678542972639375823659148713837260273331236867146087422440148833530245686570175062760256642990051266998494244674840244400502061269169715153471157271573807203770704595876526920670446818028427490518561077055637585561388770902774034184309088401864797713468155204008342280040326155013309935976230434525185115789652073569025055622462295658971936445045848829536371754580783837481306518360036078477048906395046890680764628870896526129975441763492441554395039881763459467775060717227363588017895007716912009861332470732217315489723732649781786845503562318592895515159544484932374944680825794480900332678875623268018918091046860977100306823819798830349721260024102752086744745410539570404363801044395350564723304073816272391490428953580941777897826360862955457172251213909503406635023921710381682229878699944137480825043138462133004705167453755216268813691214929114455414025940806301 . . . . . . . . . . . . . . . . . . . . [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) ce1d9a738d6fb1e584e69eedf64c31193d8b0d40 . . . . . . . . . . . . . . . . [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 (13 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f625faf59000004030046304402207a2ca042f4e9d9b85194058c4bbd4a4b0e806b3a12f49804321ee557d2a63fce02203a9083fba0a8ececd2fd3cf29251fd2c8404fd390c79656f2a03ce7ed7ff71f000770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f625faf7d0000040300483046022100b738984116528b8fad1fcadb354b8fa4d91e10b388c274c78bbbdaf5792a1928022100fa3b48743e82bd37d68f8f8cb61fd6cc448e65604e6eb13abf09bd1c63f69d3b . . . . [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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