www.duzco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:a4:2c:3e:56:80:85:d5:56:a6:68:ea:cd:fa:71:e5:f1:bc 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.duzco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:a4:2c:3e:56:80:85:d5:56:a6:68:ea:cd:fa:71:e5:f1:bcSerial Number (int): 404314261610764510184778315636382531711420
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 15:4c:de:c0:18:51:bc:10:df:dc:d2:43:c2:a7:d4:3c:74:c2:ec:f0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 06:d5:81:26:8a:54:32:5b:c4:3e:8e:2b:b4:06:ee:13:90:12:d9:62
Fingerprint (sha256): f4:68:eb:81:23:21:9f:ee:ad:90:ca:00:df:bc:7a:1c:f7:86:84:5f:74:d8:42:70:3e:b0:ef:80:c6:40:2a:5d
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.duzco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.duzco.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.duzco.com
Other certificates including the domain name duzco.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.duzco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGVDCCBTygAwIBAgISBKQsPlaAhdVWpmjqzfpx5fG8MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMTcwMDM3MTZaFw0y MDAzMTYwMDM3MTZaMBgxFjAUBgNVBAMTDXd3dy5kdXpjby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDZAdjgzfjwTwowdM8hqLQaa9vPLLhP0PWE Jh3Esk5Msw52WNyRjAn6zQqxpzVqgCHP3i2ANwN5anhmjx3ydKBVs0zj4PvezQ9H QI5m7FzLOPSPJl4SDH2PgbDoG+oh+YYhg/lFozJ9EvLXMCYm53njOF9NexzD89CV likeSoHljxJAXM5Rx+XA4/2BCy+IEocnsHpjf3G8Kt5wnntM5+5HWDg5sPrEHZ7+ m3lifUplnIfvASfI3ERlM01b+68Il3+5B/2BvV6eD+EWv260x1dFBbJcc1sNyUEv 8xjUIMOIsaUXODLx2cXx6Gi50eaBQ6WzY65wYzM69R9rBcntN8cQ76Dh08yOgP+r J37+svkH74zb9xMPDoQkV8B5nVIVCtlGv5p2kqMJg3zbiYWkmpQ3cTiVtegGo9Gj RO3AgbN64p7Rv3YmITsLXzbe6e8N4vv+yM9GNxtjvhof0Pr1Q3Y8E70vHNWN+ks6 WFjpeU0WtWNQUkLFNnKdvbFwF7jy9w+7o7qEJJWGUQIxtWSr2n4Xdvy9ZFUAwGPd yhaB0jjz3TBHWmKeFx2Tg23U0gekacHntY0dXUNvGMSMgTkeWEicn6EL216LwDxY m/kNW+beqaA9JWThliHh+YxkczRHDvRxn9+fIszfhGsu5Fz2wzKnaRlJL7fPFq7i Wd+Dr5EzGQIDAQABo4ICZDCCAmAwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQVTN7A GFG8EN/c0kPCp9Q8dMLs8DAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5kdXpjby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEGBgorBgEEAdZ5AgQCBIH3BIH0 APIAdwCyHgXMi6LNiiBOh2b5K7mKJSBna9r6cOeySVMt74uQXgAAAW8RgJT0AAAE AwBIMEYCIQC396fy9QmrnYw34M1y3TssyJeblDMcvs2sSd6xDK0kNwIhANV56W9Q jZls8MmUzRjN66qAXWpwmMHNeLdD2vzv3sXVAHcAb1N2rDHwMRnYmQCkURX/dxUc EdkCwQApBo2yCJo32RMAAAFvEYCVKAAABAMASDBGAiEA08jaafOkDoQOO33U/eBs m9whm7Afek+uMq3AXqW60kwCIQCYZGVtuFG+ONBvMD+UxpP6OhIw4K2UEFw/2krm /1BhWDANBgkqhkiG9w0BAQsFAAOCAQEARX4MKwIms3DmJnYPz+w8nuxdId16GAEq fZGgimOM+h9yGoPK2TwpmYyqzPb+H0iPTwp+zrAyMLWVjKrKkJT6E/ahGDizjr/L Pj7axFDP6IMLnKBMdYoFxYv9JCzxVAE79Z76yPeOgwUH+TyJQm9quhknmezrpEUn Ixez9jnffuPBjm8zD84Y0AqoAFV8M+nUCYI+l5tNxpdfMwFhTzE8r/Eluy/xlmPr Cl2r8vzp3LsMq0vfXEh8/TAiJm7chSA4bXYC+3Bdq7kKml0Okh3DXsTM+s2kjNZo nI+QQjj4GTZ8iXuwAIB0EsIvjX6E+r/p1x3AsoOhYmc+lxqZqwKSCw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2QHY4M348E8KMHTPIai0 Gmvbzyy4T9D1hCYdxLJOTLMOdljckYwJ+s0Ksac1aoAhz94tgDcDeWp4Zo8d8nSg VbNM4+D73s0PR0COZuxcyzj0jyZeEgx9j4Gw6BvqIfmGIYP5RaMyfRLy1zAmJud5 4zhfTXscw/PQlZYpHkqB5Y8SQFzOUcflwOP9gQsviBKHJ7B6Y39xvCrecJ57TOfu R1g4ObD6xB2e/pt5Yn1KZZyH7wEnyNxEZTNNW/uvCJd/uQf9gb1eng/hFr9utMdX RQWyXHNbDclBL/MY1CDDiLGlFzgy8dnF8ehoudHmgUOls2OucGMzOvUfawXJ7TfH EO+g4dPMjoD/qyd+/rL5B++M2/cTDw6EJFfAeZ1SFQrZRr+adpKjCYN824mFpJqU N3E4lbXoBqPRo0TtwIGzeuKe0b92JiE7C1823unvDeL7/sjPRjcbY74aH9D69UN2 PBO9LxzVjfpLOlhY6XlNFrVjUFJCxTZynb2xcBe48vcPu6O6hCSVhlECMbVkq9p+ F3b8vWRVAMBj3coWgdI4890wR1pinhcdk4Nt1NIHpGnB57WNHV1DbxjEjIE5HlhI nJ+hC9tei8A8WJv5DVvm3qmgPSVk4ZYh4fmMZHM0Rw70cZ/fnyLM34RrLuRc9sMy p2kZSS+3zxau4lnfg6+RMxkCAwEAAQ== -----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 404314261610764510184778315636382531711420 . . . . . . . . [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 2019-12-17 00:37:16 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-16 00:37:16 +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.duzco.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 885312199627288577744336594637436359854001882348554971036421586533255298147797359181658464066319663964716949048638962084417387389301171414900130355807502192374015368375113017376529774037837056611515917305912032597307140864676249263372209700431351464477831056308395689111526032139255027698615748063467741241389952497265403438987371869393242904526497639746809958467850030826926715668250744476528072497034689952823074660991552175669088467251585627162565722420585161766572496579219151353094798576890952320902771012203043553171018685587488756654089147975981354878780759080949068613018935100844954207655004317857157165773827428494281904326580241313303525649582966601094935958561637264297534710497364365392206375717735919029791377708528841677510034029812533594152840958300300862314392131026683049986471959909828990253875347537172043393861107194779626446962840988503759288577981333382213379015187885911599123263833397567410324290795752838999395457175955074781082053249065794359522422748097641929318980011209323755865118280274409870508774452194754090300304261983142437743228347188445000427442068616888784791381322853795916965989098874144219887354484274800449706604966242125369515900725428341469160846367416329232856351948548023627514723250969 . . . . . . . . . . . . . . . . . . . . [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) 154cdec01851bc10dfdcd243c2a7d43c74c2ecf0 . . . . . . . . . . . . . . . . [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.duzco.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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f118094f40000040300483046022100b7f7a7f2f509ab9d8c37e0cd72dd3b2cc8979b94331cbecdac49deb10cad2437022100d579e96f508d996cf0c994cd18cdebaa805d6a7098c1cd78b743dafcefdec5d50077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f118095280000040300483046022100d3c8da69f3a40e840e3b7dd4fde06c9bdc219bb01f7a4fae32adc05ea5bad24c0221009864656db851be38d06f303f94c693fa3a1230e0ad94105c3fda4ae6ff506158 . . . . [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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