www.dfnco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:55:60:d1:b6:98:d7:ca:de:39:05:97:31:19:dd:ca:52:2b 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.dfnco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:55:60:d1:b6:98:d7:ca:de:39:05:97:31:19:dd:ca:52:2bSerial Number (int): 377501839696467554779972142264779719463467
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 4c:41:14:d6:b0:f9:3c:fe:48:5a:33:f4:81:44:1a:1e:43:01:8e:37
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 2d:93:3d:ab:24:82:30:62:dc:f2:84:1d:15:87:05:88:26:e8:7e:ad
Fingerprint (sha256): 3e:d7:ff:21:45:b7:5b:42:ec:5e:88:7c:df:cb:54:c2:7f:05:a4:2b:e1:53:1f:28:93:37:f6:1c:25:ba:bf:d9
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.dfnco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.dfnco.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.dfnco.com
Other certificates including the domain name dfnco.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.dfnco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGVDCCBTygAwIBAgISBFVg0baY18reOQWXMRndylIrMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMTMwODQ1MjVaFw0y MDAxMTEwODQ1MjVaMBgxFjAUBgNVBAMTDXd3dy5kZm5jby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDfhPdYPcCVn5eQJB4LwdrFn4v/IsTjnEb7 fVxwZKMoxr9RUUQKHc0LJuEgbTfhuHlKV7R95YNoJF7w/4taMpXKTCG2QBS+BIL+ 6/bALSY5QgfYTv03bH/DkjiKtV0uEaz3s+98h70td6aeUq8jE2piD0E0u/Z/qNb6 9/BkSdst+mgNQOx6BY+jz3Ahbwz0ftn0373GSfM6qKsuP+Fuf5BPSkHSNnWawUqS iMfFXrzvkEiBlQ8MG2f8DX5B85W61auVVc8cdOsWSbYp7z3EZQEX7LQewCh8zu7L ldBBFmz9BS4G9NybztxR+UbPmj89S9PQ0DrEAfL6n0UXikgxXgmreb6UIEKojs5t bTl3FykcfhDnE4A+JATytuFK73BQNxbmli6A2t/J6jRnryFfKTHLfgv+Sl/Af8I/ blwyElA9kZuMb01sQ9RgT9A6Hjvs25xsnerG3+P0mOGF+TliaYn3sD3k5X0duWGx m7LbNVbr2RdFTNeEbipIsekzDqcFZQBlDJDe6S8+S0kVZwNrqViwIKAHdO5ZauCI eMh02+dltbqqhEpDg54akL/62cziZgdMlzodTlAc4UgW46fitaWWxUCDRLpSVxMi 0ONBWryI9rsOQpe0LXf/kcKwG3OPNT8/ocebnftAlue9kbC0iXLBZuOuD3gU9tRw 80jH3TbRIQIDAQABo4ICZDCCAmAwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRMQRTW sPk8/khaM/SBRBoeQwGONzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5kZm5jby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEGBgorBgEEAdZ5AgQCBIH3BIH0 APIAdwBep3P531bA57U2SH3QSeAyepGaDIShEhKEGHWWgXFFWAAAAW3EgiDeAAAE AwBIMEYCIQD/yPHUpxPJ2b4FSKY5DFZKdHKn7yTU61h75EhPP/a5UgIhAPNhqGhG aA0SNIJXC+asOGY+3Eszpo5K3Zon+ZwZuYCYAHcAKTxRllTIOWW6qlD8WAfUt2+/ WHopctykwwz05UVH9HgAAAFtxIIg3AAABAMASDBGAiEAp0skKA8Mq6SJ7lBut29E +2LB3AWv3g/chgJPCfYi7TwCIQCtC/e6I3NgFYry+mq7Uwkmt0n/63Wx1LlSKSrM 9/gK7TANBgkqhkiG9w0BAQsFAAOCAQEATuA9MRw3HyD1zrhvaqyBu+D6AUKI1ZYU C+fYXBemvjTSOr1Ja/hZGl5XI1SbEKWUdQTFHJN1jdAhUu6g/Jj0aRazMp98npFR meVMaD7vUGDSnhXzLBoV0DIdVKXKKDALiEg/4aZu0ajdfF6DBHzm8MuW4sRfXU1j cvblPY2XxN8GDSWBoni102xgBzmAHas9IWGsEhhKuN//+lOs3H18rrrPRxs+qwKM EJh1M+If6I7j20CpbIkn1ExWhK6bP3mK6/If9ERlg7Xmlahpyd22xdxk/WPnS0xd anU3jvZJ31hGo62nRuCgIcJjKdjN9kfBqK6sF6h9U5cjjXiOoh+buQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA34T3WD3AlZ+XkCQeC8Ha xZ+L/yLE45xG+31ccGSjKMa/UVFECh3NCybhIG034bh5Sle0feWDaCRe8P+LWjKV ykwhtkAUvgSC/uv2wC0mOUIH2E79N2x/w5I4irVdLhGs97PvfIe9LXemnlKvIxNq Yg9BNLv2f6jW+vfwZEnbLfpoDUDsegWPo89wIW8M9H7Z9N+9xknzOqirLj/hbn+Q T0pB0jZ1msFKkojHxV6875BIgZUPDBtn/A1+QfOVutWrlVXPHHTrFkm2Ke89xGUB F+y0HsAofM7uy5XQQRZs/QUuBvTcm87cUflGz5o/PUvT0NA6xAHy+p9FF4pIMV4J q3m+lCBCqI7ObW05dxcpHH4Q5xOAPiQE8rbhSu9wUDcW5pYugNrfyeo0Z68hXykx y34L/kpfwH/CP25cMhJQPZGbjG9NbEPUYE/QOh477NucbJ3qxt/j9Jjhhfk5YmmJ 97A95OV9HblhsZuy2zVW69kXRUzXhG4qSLHpMw6nBWUAZQyQ3ukvPktJFWcDa6lY sCCgB3TuWWrgiHjIdNvnZbW6qoRKQ4OeGpC/+tnM4mYHTJc6HU5QHOFIFuOn4rWl lsVAg0S6UlcTItDjQVq8iPa7DkKXtC13/5HCsBtzjzU/P6HHm537QJbnvZGwtIly wWbjrg94FPbUcPNIx9020SECAwEAAQ== -----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 377501839696467554779972142264779719463467 . . . . . . . . [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 08:45:25 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-11 08:45:25 +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.dfnco.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 911879590954088468245409617733835013363559980391951754014746775581147561061095782279713550960472305581507016247591553126622424257820684085499409098742982206009144886906581995869638367326206994787884178998602137343908300024599448615307257320572694778293992115376885538922055394487916323248447878092836517284012044884793157451675021101091729797432426176556517199097178758638579639595372386559733042880593060925665881197959661411917969803435608259052413640094641100195036801519183954609443625998459052508426241554400275361872064611588666361726484809452574871816327372585069424696250314868163285239464733673004086574529052436356254261380339816656010096934016596219405046830797507976100606912780493226369278385375092404731633757200239812286280968148643982969828320734469193677045779041901853265240638146554182720635789406955134954539771828539014529472745527274656868786840392286700466796829303864348896168170594061094976683325637092765503905035022807851075389090867187886477439954920297940735867702806832491617390819461977321644366650724970245766041795640502169050362549655057543306036702842746000340492150145705789106512230915685868045885554940496261584889893319931749093633074725240497978404702663650612500723509239528015952240604270881 . . . . . . . . . . . . . . . . . . . . [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) 4c4114d6b0f93cfe485a33f481441a1e43018e37 . . . . . . . . . . . . . . . . [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.dfnco.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) 00f20077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016dc48220de0000040300483046022100ffc8f1d4a713c9d9be0548a6390c564a7472a7ef24d4eb587be4484f3ff6b952022100f361a86846680d123482570be6ac38663edc4b33a68e4add9a27f99c19b98098007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dc48220dc0000040300483046022100a74b24280f0caba489ee506eb76f44fb62c1dc05afde0fdc86024f09f622ed3c022100ad0bf7ba237360158af2fa6abb530926b749ffeb75b1d4b952292accf7f80aed . . . . [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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