www.rtkco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:2f:14:59:c5:b2:bd:2d:6c:13:5b:32:ea:64:f6:84:ea:ed 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.rtkco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:2f:14:59:c5:b2:bd:2d:6c:13:5b:32:ea:64:f6:84:ea:edSerial Number (int): 277357179724696808065576202757678976789229
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: e8:55:92:6b:7f:2b:ba:39:43:f8:23:f9:2f:3a:66:1f:29:00:8a:e6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): c8:26:23:e0:43:8c:cc:46:bc:4e:99:08:0c:5d:88:8b:dd:cf:5a:00
Fingerprint (sha256): 60:82:f7:65:0f:dc:a0:39:2f:f8:6d:16:e4:e1:8c:46:a2:99:ef:37:b8:f0:43:4d:5a:b2:45:b1:50:7b:8b:a4
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.rtkco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.rtkco.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.rtkco.com
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Certificate
The complete raw certificate details for www.rtkco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGUTCCBTmgAwIBAgISAy8UWcWyvS1sE1sy6mT2hOrtMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMjUxMTI4MTBaFw0y MDA1MjUxMTI4MTBaMBgxFjAUBgNVBAMTDXd3dy5ydGtjby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDgse5XjyY80/TPYEFzvGhslv1qDLfUJCOq 3Pswk5wNvzuNle0A6R7BGdaqF6l3r+vlmBAn+iriU3cO08IzFQ6x9x7pc6jJ55Gk 9BaDO0OoGlqS9XbvUd91wwdnPdZkzJNk3ctnxRrX1cMILBpMOTmP4a8pB/MusS5x cbuSTcs1InFBWTpfCrN+4sSI79UFpsrmPqSqUrqQ+O5bi38UQzJ/m6+tbWP6L/t3 OnTLEpnA3AY6mGAVBBG7oGdA40HWenqur5oq+vGKIYxxQVpgNzYQ89lSkEo4W6sH gDusKbDIw/KEYKJnAJp1jArGxxaSOl7WWFOMuN4RYRPyJrAjdZQETFWGoJ2klaQH awRzgVzxcKJwSIAv1U3U2c++XlJJRoWU31pNvy8bAv1ZxfeIFUIu5le5rbzF2kBM D723+ca1NnWyFEnVgOkHdG9RJeZmKUuf72a/OeHqeghLc0sJV0RlJquo2fzMrS9K /nYZHHZoPW3r5NbzPkZZYa66p6msOVppxdrDsrYPqzphHs1ADYERKa1hvKMI3HuL q/MffBM9gX0XRKEaTIY3aNhhM3u90MxUidswPWm4hgQlJlebbJ7fwNht0QLSUsq4 Ibvm/HTYtqfzXXvgvyyNxK4ZEmfll75l6Qz9XBpVT66dXotix1DvmNzY/YxRHG4Z C5sehXEK8wIDAQABo4ICYTCCAl0wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBToVZJr fyu6OUP4I/kvOmYfKQCK5jAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5ydGtjby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEDBgorBgEEAdZ5AgQCBIH0BIHx AO8AdgBvU3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAXB8UacTAAAE AwBHMEUCIBw1VIjV09ijzqALMBnJLWuNs5iyh5JqHHnyGDI9r6a+AiEAnfYktomG yOP43QJjPH9v2i3kM7ziq7wSiCnLePy1i1kAdQAHt1wb5X1o//Gwxh0jFce65ld8 V5S3au68YToaadOiHAAAAXB8UacOAAAEAwBGMEQCIHznQXOZoAO0AZGkK0PQrI6d 0OSMdGOKrl0RjgbHFlDXAiAXmvMh8q4Z7eRxWjpJ0w1hF0EElEZ1vA0gGwhwv7pG dDANBgkqhkiG9w0BAQsFAAOCAQEAXOF5ZfQFmZbVY6P0OX/bsM63E6iSXNsE8mzA RmjGal4XsdBH7tCwE8UdS3rcWuff8zNDCrtx3s0JVva1AoEGMeNdLmzggc9y+h4b QiRIRd/YEMW1TMx/Im0arvwEHHKwcjuQl6fti7rd/fO4ovO1iHJxvd4rDtpeUWDb q4SCeDiSVAub4Qc7bLIhFidTT6inZKJQLbqzpM+MC3jWff4slVPYSbGscMvukrs1 0CHH/Iuo9I1V44k8vjNVt4pOfhC2PVJNYkM/6kN2AC4Yu3Fl4eJEy/lRgV/tvMbH 4WdcOyeTIpX0hAD6gjnXBuVa2/Wr4PFyH1BToIP0zRKgxGe92A== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA4LHuV48mPNP0z2BBc7xo bJb9agy31CQjqtz7MJOcDb87jZXtAOkewRnWqhepd6/r5ZgQJ/oq4lN3DtPCMxUO sfce6XOoyeeRpPQWgztDqBpakvV271HfdcMHZz3WZMyTZN3LZ8Ua19XDCCwaTDk5 j+GvKQfzLrEucXG7kk3LNSJxQVk6XwqzfuLEiO/VBabK5j6kqlK6kPjuW4t/FEMy f5uvrW1j+i/7dzp0yxKZwNwGOphgFQQRu6BnQONB1np6rq+aKvrxiiGMcUFaYDc2 EPPZUpBKOFurB4A7rCmwyMPyhGCiZwCadYwKxscWkjpe1lhTjLjeEWET8iawI3WU BExVhqCdpJWkB2sEc4Fc8XCicEiAL9VN1NnPvl5SSUaFlN9aTb8vGwL9WcX3iBVC LuZXua28xdpATA+9t/nGtTZ1shRJ1YDpB3RvUSXmZilLn+9mvznh6noIS3NLCVdE ZSarqNn8zK0vSv52GRx2aD1t6+TW8z5GWWGuuqeprDlaacXaw7K2D6s6YR7NQA2B ESmtYbyjCNx7i6vzH3wTPYF9F0ShGkyGN2jYYTN7vdDMVInbMD1puIYEJSZXm2ye 38DYbdEC0lLKuCG75vx02Lan81174L8sjcSuGRJn5Ze+ZekM/VwaVU+unV6LYsdQ 75jc2P2MURxuGQubHoVxCvMCAwEAAQ== -----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 277357179724696808065576202757678976789229 . . . . . . . . [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 2020-02-25 11:28:10 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-25 11:28:10 +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.rtkco.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 916675799536236300503960776209067432741352751892346284140350976915384839260194398733617822762334783944261765981430939208059515621404711961425307520971361012082575936804000776833469458607455615692794160075334057134555275989003007839563006017845477838608351944093740236950943384379527504140524445863464297110501958767784831597430350811602753025225229834919548803019405524129643432570328072856659354387797473610384520052875094239886393837916354373499301156393195234650481774130148220403242898756481875272305153613613873367516141702690107710875999591991861538119442057216884073673023095679063384804945690105585297919522990118960256771993304862866165458642173361271200135199117674617416657274727567571250896383905878012190339318931996870669940204201891471210750062168563920898929315388598386174888202160815935526006656397666404714736406807023567693456281364842949995068366905546862443047490869500481768716090169952289178878772868952212878302357694166106109177909423823371898340504712017997477726849266038767181430320660248665906884800864723121619127032781512117376993602403948179764003317138168738253555576040811685073433808326155855832080042996541681967820809214891322854587150013884872429848573701275723090581629599021786623630784924403 . . . . . . . . . . . . . . . . . . . . [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) e855926b7f2bba3943f823f92f3a661f29008ae6 . . . . . . . . . . . . . . . . [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.rtkco.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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d913000001707c51a713000004030047304502201c355488d5d3d8a3cea00b3019c92d6b8db398b287926a1c79f218323dafa6be0221009df624b68986c8e3f8dd02633c7f6fda2de433bce2abbc128829cb78fcb58b5900750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001707c51a70e000004030046304402207ce7417399a003b40191a42b43d0ac8e9dd0e48c74638aae5d118e06c71650d70220179af321f2ae19ede4715a3a49d30d61174104944675bc0d201b0870bfba4674 . . . . [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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