www.bktco.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:0e:40:dc:08:a1:64:ee:15:bf:b7:fe:fb:4b:af:a1:61:5a 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.bktco.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:0e:40:dc:08:a1:64:ee:15:bf:b7:fe:fb:4b:af:a1:61:5aSerial Number (int): 353299309936019484674970369976977005306202
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 6a:b7:7e:c5:11:b1:b0:ab:67:6b:94:bb:8c:9f:e7:1c:4c:b4:a8:a6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 87:1d:aa:44:f8:05:61:b5:61:ba:c7:17:c6:cd:a8:8a:8b:44:3d:4e
Fingerprint (sha256): cf:4b:17:8c:e9:9f:ad:13:f8:4f:7f:3e:e0:8a:2c:1d:be:d5:9a:8d:b8:4a:4a:de:fa:2a:19:79:bc:e9:16:13
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.bktco.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.bktco.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.bktco.com
Other certificates including the domain name bktco.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.bktco.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGUjCCBTqgAwIBAgISBA5A3AihZO4Vv7f++0uvoWFaMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMTIwMDM0MDFaFw0y MDAxMTAwMDM0MDFaMBgxFjAUBgNVBAMTDXd3dy5ia3Rjby5jb20wggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDeEr5Rn/jCgjopHj5oGhVdFA3fbM6S6w9b biwYNafXW1FfCaIR6dBmVVrVrwBFDmI6F8WIMGH1izXfxdZIkZCgmdGdXHX7B1Q4 AqXq1QVUctu9Nu6q0ajsLwZaHZaxxpNamO5hFiSqgrb4weG/B8/qiPlZ/ZdUYnP/ 9HtmQDGCr3T5BSTFk1GU+NMOrHlOv82gJeddg1KmD2GmCBcvWROvEGhj1ec8wLq6 fSNt265B1vsy2U+w2oZyRX51C+52CXqiLw5nqvoKVRqk1hI+wlemLfdc7BA/gWNw SUFwVuQNa3s2nGil0z2WSWcrVHCOsxwn8KdIPOe3sY/3AwJHYJ/fee34Xxyyy6Jx du12pWmY8Q5TFJOCwS/+M5Ntnbb4zemyBSiHPpnj9CyqMr2zP06B0ne9RTGrp2UE 6KNjO4LJ38jwx6zY1CUBeP+PnufboEZu09OTLQ3+sX8neqshQFeT5ophcuAslxSl 9jMZoQ2MQazZW1j2uI74eQfhmmnBdkbCzWiKPOjRzrKIL0GsFhAYjNTRll/d/wLS St/suNl/H77HznDTvDLS/OzgL+mKE6YDgEZN3fsumpbwT6Slz0nj/F4nC0Np+9fP yofXNWtbPt2+Amjo+igXSo9QyNHh4DWz9xp9idMR4sQ6nF0iB8JYzlc/tnc9XJ1C ISBlfqt+jQIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRqt37F EbGwq2drlLuMn+ccTLSopjAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5ia3Rjby5jb20wTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdwApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0eAAAAW29md9vAAAE AwBIMEYCIQCfSyHtOI46BHwNUyKaWVyjTRg9jcUy6X49ZoTwXMdpaAIhALQBLEQc Vy9pSlYKau/fsDw/b+W7mFe6IRg+7UE5IAUnAHUAXqdz+d9WwOe1Nkh90EngMnqR mgyEoRIShBh1loFxRVgAAAFtvZnhcgAABAMARjBEAiBHesFhVuA5ufKUHJzwsCBq IrtDduu3XMMbq1Mn2hbT7wIgOpRW6vJEyWKdC/AWtDmPzUTxYHGN2hjl8n6bv63Z rcowDQYJKoZIhvcNAQELBQADggEBAA39duk98TTuGLGryiWDD2he5scPsipLMXwZ B69iPXVNgHFItD/TNz84s/H7D1uwskI0i4lI2y1Tuz/PR7e4a4jHWN2rEcDWdVys ih44RZ0B7ISMAjrxpXf6mnJLOAY4WJ2rLzrBwBuRPcvugMP2ougZGZ5OnumuCy2v TS+Dr8nl+aTXjvAb6SvKoHwtA3GaPFSGnFwA7pyL0SoW+GlFLsdwR91WvHFnK/su Dzj5x/p8BSXzkxKJn2TkIeYjiK+ucCQkuI0GmEKzSx3anq9Nto3BJkhWowOmG9tn kq+7111vs3zXmJ6jUBqzEcFnoMRkXC0DlUy849/+PDLZ19oEG8o= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA3hK+UZ/4woI6KR4+aBoV XRQN32zOkusPW24sGDWn11tRXwmiEenQZlVa1a8ARQ5iOhfFiDBh9Ys138XWSJGQ oJnRnVx1+wdUOAKl6tUFVHLbvTbuqtGo7C8GWh2WscaTWpjuYRYkqoK2+MHhvwfP 6oj5Wf2XVGJz//R7ZkAxgq90+QUkxZNRlPjTDqx5Tr/NoCXnXYNSpg9hpggXL1kT rxBoY9XnPMC6un0jbduuQdb7MtlPsNqGckV+dQvudgl6oi8OZ6r6ClUapNYSPsJX pi33XOwQP4FjcElBcFbkDWt7NpxopdM9lklnK1RwjrMcJ/CnSDznt7GP9wMCR2Cf 33nt+F8cssuicXbtdqVpmPEOUxSTgsEv/jOTbZ22+M3psgUohz6Z4/QsqjK9sz9O gdJ3vUUxq6dlBOijYzuCyd/I8Mes2NQlAXj/j57n26BGbtPTky0N/rF/J3qrIUBX k+aKYXLgLJcUpfYzGaENjEGs2VtY9riO+HkH4ZppwXZGws1oijzo0c6yiC9BrBYQ GIzU0ZZf3f8C0krf7LjZfx++x85w07wy0vzs4C/pihOmA4BGTd37LpqW8E+kpc9J 4/xeJwtDafvXz8qH1zVrWz7dvgJo6PooF0qPUMjR4eA1s/cafYnTEeLEOpxdIgfC WM5XP7Z3PVydQiEgZX6rfo0CAwEAAQ== -----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 353299309936019484674970369976977005306202 . . . . . . . . [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 2019-10-12 00:34:01 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-10 00:34:01 +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.bktco.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 905979680503751109059634232835085209548124692808127776485390784437029290792025033731015717725993303872426760126308921355411723976640990070406828588028090967337175819981873193521701908484044997138894096140478128978020953988922662631702180669155353515604360173547404178436732205300830472687404997204861564848846899824428043059336172294711841963144581537914839604980583270356271347759338974945215995135818533409121855568951005359928664518011544882841631726640442155226388297797641737718309294871626795867251709180904794238973846353982304621289298118188818012332293047850791165452357408824942842303763790015796618306382060539622837643679063692576688404289362742455927646490835428262154744439815558794743378123419894180907532096579793812008998199384374955079950702720997447767736030835406619002336575854325130931073118268659253234124906407386918852470583581859471991523700491652517523097742691814622626276823626409911114241196947318119691091783943903811351634248669663045183089669463269590005133296939019370126108376594934823409141006012944291544035268405080688732089486193666968665072272003587092581554179521921580365134225724100509442885676096567795217977111424851685516491225701873116407193718351029300303367523820773344058137876594317 . . . . . . . . . . . . . . . . . . . . [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) 6ab77ec511b1b0ab676b94bb8c9fe71c4cb4a8a6 . . . . . . . . . . . . . . . . [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.bktco.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) 00f0007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dbd99df6f00000403004830460221009f4b21ed388e3a047c0d53229a595ca34d183d8dc532e97e3d6684f05cc76968022100b4012c441c572f694a560a6aefdfb03c3f6fe5bb9857ba21183eed41392005270075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016dbd99e17200000403004630440220477ac16156e039b9f2941c9cf0b0206a22bb4376ebb75cc31bab5327da16d3ef02203a9456eaf244c9629d0bf016b4398fcd44f160718dda18e5f27e9bbfadd9adca . . . . [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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