ddfco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:23:7d:2d:ee:32:6d:37:fc:2b:f7:8d:9c:e1:bb:75:4b:63 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=ddfco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:23:7d:2d:ee:32:6d:37:fc:2b:f7:8d:9c:e1:bb:75:4b:63Serial Number (int): 273413132621554030055094854483310860913507
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: e2:76:c4:83:c1:9d:59:47:6f:fe:e6:e6:33:42:f6:78:b4:f8:15:c3
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): ec:e5:d6:49:8d:78:b0:76:cf:cb:4c:6a:84:50:a2:a6:19:1f:4a:10
Fingerprint (sha256): c1:e1:7a:c5:79:48:cf:5c:36:7b:67:b5:1f:1d:d3:6d:18:00:66:d7:b6:ac:75:4c:4e:57:ff:96:86:ee:84:e4
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate ddfco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for ddfco.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
ddfco.com
Other certificates including the domain name ddfco.com
(limited to 100 certificates)
www.ddfco.com
denversportsdoctors.com
www.ddfco.com
campisalentina.org
disaster-masters.com
www.canuckspoker.com
ddfco.com
www.ddfco.com
organicmedicalcannabis.store
ddfco.com
dentistsfargo.com
lymediseasetick.com
69624.com
www.polyintel.com
vibrazioni.com
breastfeedingpro.org
ddfco.com
www.ddfco.com
ddfco.com
denversportsdoctors.com
www.ddfco.com
campisalentina.org
disaster-masters.com
www.canuckspoker.com
ddfco.com
www.ddfco.com
organicmedicalcannabis.store
ddfco.com
dentistsfargo.com
lymediseasetick.com
69624.com
www.polyintel.com
vibrazioni.com
breastfeedingpro.org
ddfco.com
www.ddfco.com
ddfco.com
Certificate
The complete raw certificate details for ddfco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGSzCCBTOgAwIBAgISAyN9Le4ybTf8K/eNnOG7dUtjMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMTgxOTMzNDNaFw0y MDAzMTcxOTMzNDNaMBQxEjAQBgNVBAMTCWRkZmNvLmNvbTCCAiIwDQYJKoZIhvcN AQEBBQADggIPADCCAgoCggIBAL8pYDSuoazmnP2SmDF8t0T5LsaswFs0LNPJcomd DnNDke0KsIRAEYYTqUZhKkDFGSFklFIK5aNXv+wWy/8pJ9QqjdmgsVTz895jzmyi EqFkls2H1QIpdCu6HjZ0lCgToB3Tygkqax5hFuT2gLQ66CZfmtF0UuHIxarya5XV DI78Le0fbB2fFz2YNnoq/7DRVqb2pkPapoCY4ZOA/9VphuC2gXmt7CRLqUaB31KS X97BPdKy4FB4KLbe9X1N6SV+gFPvk68yQBytSlqNhUnXyJISm3+I+S1/kKbwLLMm lSniybgv1eXJeTnPgGOZP5iQvekHtYYsMLYcdjr90/Iexc5Ha7tVBky+txsj6QeF 44Lza+CizpTIHCLhd37mYIMCxBRbICDEzIU36l8Z+vxQ42bzEMyhgwRhnQgpmd56 +UmSv+yP7j2pzhhSV5jTVVRuFkQuYe313md4T4zNkoGnp1XZvLPth9mi9aKvMUka iIbPsVWLabzQrstJPGD9+p6vIQJdgL0g8AmMvn/WUZIRZHP9aDGh9DhD9ehQtYz0 xpyN/rrpW2TqyVLQ98Jd3lOw4lxmv6KIbHH8bKTJVf/A9RqpRnbTgPUrfiX6VaJn nWNqlmXYMdEY5IzEECd5BwXiyy2xiIFbbDVGC7mwYszKVSDq3zSaCTpkYstfniK1 VYu7AgMBAAGjggJfMIICWzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFOJ2xIPBnVlH b/7m5jNC9ni0+BXDMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8G CCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZy8wFAYDVR0RBA0wC4IJZGRmY28uY29tMEwGA1UdIARFMEMw CAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9j cHMubGV0c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHcAB7dc G+V9aP/xsMYdIxXHuuZXfFeUt2ruvGE6GmnTohwAAAFvGrdjWAAABAMASDBGAiEA thgmS+Kgpqw1D3wOn4c3VLfSSd7opMmbLksfJ3Y8LXwCIQCpw72gIieFjyYU9tgB wsaqiwQnKvnpfm3DWvmRZL9w1AB2AG9Tdqwx8DEZ2JkApFEV/3cVHBHZAsEAKQaN sgiaN9kTAAABbxq3Y6MAAAQDAEcwRQIhAIZs97PZe/k9YCnVSd2ZzrEnWynzIFz4 IGvWZ9ssCM3gAiB03ZfLodb1DIpuT2D5PGfvSEON4XNdOUPhxZNu7HdQPjANBgkq hkiG9w0BAQsFAAOCAQEAhik6YT1Wa7WbUtFxq/C8jPgjS7q8TdZFFC3w2DlDuF7A ziyx4XZNZ5oLK7pdAu+ZdIHFKp9ZZc9Hqep80SaIqXWP748qyH4wg/qQ+QESoGVN dHUrF0/JsuUVUBadPBvRjGSFS+maP/f2DwiTSwZSLlVlMX+d9JAShMS8u6bHdpFH 3HScRR8vTinOhvRcFjtZKtNTmX21JSEjAfZkmSK4D6L1Sy/vkBQwUvPzaskT6cqp JTTZtyn6DJ9YBT+z3xUS3JkaZxdAQ56w4TwUHX398dpRUOeSS+uMFjIYDA2oe3T+ U3J+jKCr7cynRwUGrzMXjP4L0dYwOVmBe/B3xyoUIg== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvylgNK6hrOac/ZKYMXy3 RPkuxqzAWzQs08lyiZ0Oc0OR7QqwhEARhhOpRmEqQMUZIWSUUgrlo1e/7BbL/ykn 1CqN2aCxVPPz3mPObKISoWSWzYfVAil0K7oeNnSUKBOgHdPKCSprHmEW5PaAtDro Jl+a0XRS4cjFqvJrldUMjvwt7R9sHZ8XPZg2eir/sNFWpvamQ9qmgJjhk4D/1WmG 4LaBea3sJEupRoHfUpJf3sE90rLgUHgott71fU3pJX6AU++TrzJAHK1KWo2FSdfI khKbf4j5LX+QpvAssyaVKeLJuC/V5cl5Oc+AY5k/mJC96Qe1hiwwthx2Ov3T8h7F zkdru1UGTL63GyPpB4XjgvNr4KLOlMgcIuF3fuZggwLEFFsgIMTMhTfqXxn6/FDj ZvMQzKGDBGGdCCmZ3nr5SZK/7I/uPanOGFJXmNNVVG4WRC5h7fXeZ3hPjM2Sgaen Vdm8s+2H2aL1oq8xSRqIhs+xVYtpvNCuy0k8YP36nq8hAl2AvSDwCYy+f9ZRkhFk c/1oMaH0OEP16FC1jPTGnI3+uulbZOrJUtD3wl3eU7DiXGa/oohscfxspMlV/8D1 GqlGdtOA9St+JfpVomedY2qWZdgx0RjkjMQQJ3kHBeLLLbGIgVtsNUYLubBizMpV IOrfNJoJOmRiy1+eIrVVi7sCAwEAAQ== -----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 273413132621554030055094854483310860913507 . . . . . . . . [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 2019-12-18 19:33:43 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-17 19:33:43 +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 'ddfco.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 779871386338723204135599092828453473526288129663476781182514269095075831409447642324926790809582051125977591325810228182023445142422794597760532828013332981479665943104027234727120289908845876448887545915536736911454531516437430649183169029434306291721815384368100161115861617062040913622072217148698312397622577540168796896573178850573958372017068014073850381617244906937372532427826767756073042653655199629658965389573549748097845543749940556220422089094815065291552698764338092931497799043169460392511080082033982252421907551941596559241757733140665026632268749129413103169294641739708887353648845417697151387280996165498773246052515863809777754063228260782341621889374619897999566389698671268790538460544814964322162464146834845241600171092530909206284079228559627956770403977428534601592900838263528027975076198603972897919172047582550728643480941015938736811039306063947961800044611519735704271887650799165197608597320248782237255022362795417782842212644765022089773504451051130376004002499111308583886849015875639383210948698142537402421828119735552463138428349588830965655458610319710348675253043687214958243837893415982456873620929260746011594717933030900034972755858267794762442234409472733797445906923836529676824966695867 . . . . . . . . . . . . . . . . . . . . [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) e276c483c19d59476ffee6e63342f678b4f815c3 . . . . . . . . . . . . . . . . [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 'ddfco.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) 00f100770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f1ab763580000040300483046022100b618264be2a0a6ac350f7c0e9f873754b7d249dee8a4c99b2e4b1f27763c2d7c022100a9c3bda02227858f2614f6d801c2c6aa8b04272af9e97e6dc35af99164bf70d40076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f1ab763a30000040300473045022100866cf7b3d97bf93d6029d549dd99ceb1275b29f3205cf8206bd667db2c08cde0022074dd97cba1d6f50c8a6e4f60f93c67ef48438de1735d3943e1c5936eec77503e . . . . [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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