www.bktco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:b6:93:44:f8:e8:d4:05:63:e3:fc:96:0b:a0:b2:06:eb:e0 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): 03:b6:93:44:f8:e8:d4:05:63:e3:fc:96:0b:a0:b2:06:eb:e0
Serial Number (int): 323464003214942436039156184916683259309024
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 0b:5a:78:3f:a7:49:50:31:13:2b:82:e5:4a:d1:d8:66:f8:ef:3c:8e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 7c:2d:2f:a4:bd:97:bb:e1:3c:52:b5:c8:5f:e8:b8:b1:4e:15:37:a0
Fingerprint (sha256): 09:71:53:bd:b2:46:74:cb:8e:a8:ef:b8:7a:a6:03:f2:e9:5d:b6:8f:ef:09:d8:e9:68:78:53:c0:63:b0:14:e0

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check 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-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA271nHbgnAC6kzMUFF025
Gdo5QZAT4wmFxJs4qD6lJw8JzCyePvLpAaXVgwQWNlGTC/qSclh3VQX5l2lnlNZc
FcN5RGBIpX2KiQx9SkLnNaRh8xZ7UHdMSM+2JAc+IjTpm/lpwaeRY1Wsn2qRz3Rd
Tf7EHME0v5Uj0gnD8mU3exicm4Qjcbzde+ZHpK3KJdOyCQYg4Xrli8Sv4yUXwSH/
sbXfBBLCwEnKoxIAya7ivIQaSGlAMBmF8fnrCVd3yDMprezfujaeqd+NLqcF4oHw
yq3ulUdlKqa0d0TQlJUPCSsdsY/1IoPmsxi9L5ICZZC4oM37m73VwKUsEshWx03E
J6DKlTKqwWWYPhihLBdwiCV75OS4qzR6CEcuDV58kOo3QJ7OFPG9iEOhrxwlIQIT
b5mpKaA+CVeAZnJPhp5C7bFtX5i235uyTRtqSdZA7kh8GBKosCV367y6/lmcjXdg
06M7J7+2t46UsM7Ovr9+q/1JItxATqwiUo30oQxX+0yYcECYXsuukKwiRIbX/egS
uGJPxb0h6V5DmHz8PfTuqv4ivecMb3m6rQ4khRixyqeGrEVrbojBvXJxRAVTXtLz
tkXSg9Ie0uT5ICs7KwyqOkLXLm3qWCYyvPYIQ3ro/dHEzjgDp6O00iPW/8ypLeri
lY7GSmDkg0SlgGkEySW8/x8CAwEAAQ==
-----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 323464003214942436039156184916683259309024
 . . . . . . . . [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 2020-02-17 21:16:37 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-17 21:16:37 +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 896460394639340454916722246966976182106142500835731693097505792759659423429244174997968274341280970174688870299311909966978028625799161550394368463819954832325750209257383462337881333038596513486069558026579570209395670013572773321375998747524558946799476891211745606515345073875296326224324579531778148067425541135437225941009170503379335791298476216156909083123518495362592849664400118789702979830286347976435611240048419994060725920432862832092268261339273210636640121366485707270769777772983297644208384724909851415834278751790187869684230212340191530300115749898839623396751165677962424655713995394925864845152997285957496987388173723763397912469257993070587013499745129604036850574181671252422681761171714395697698004524281786761156321994060274030573014271445851128900444414138265590996560574976964584573353296619435496382527178637357864202677288692723909738499698122402277708130214298379654389900559623842880721872399561595784043661350502010515069491655366782159842477819745379072443590889703122373322457169468263022266190060815079518714757274713268087644714565948602879817591804750365726509536063135776347007460976345730173571458152093703874720620158444928925588526634748111313432960082643400407489445209398551185507076603679
 . . . . . . . . . . . . . . . . . . . . [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)
							0b5a783fa7495031132b82e54ad1d866f8ef3c8e
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000017055398283000004030046304402204106e6303c13a4e02f5cde85b2827bc7d116ed1749ef4e4dc5777dd3a1ece7f60220284f5da18c62b6492390521f136f12af293d6e711241c0ae069fc25b6f7cff07007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001705539827500000403004630440220170fa9934596d95491fe6b3f886d06f78653abd2d7f49edec00a6d391b6dd9c802202c9bc6c063b155d45be9322f33e1504c17906baf0eff8842e258e7d1aefe08e3
 . . . . [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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