www.jkook.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:a4:35:d1:2c:e6:9d:3d:c1:21:b8:6c:9a:da:ec:ea:1b:94 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.jkook.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:a4:35:d1:2c:e6:9d:3d:c1:21:b8:6c:9a:da:ec:ea:1b:94
Serial Number (int): 317214701154831846010113405657838724455316
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 72:a8:64:f0:12:64:f5:61:32:a8:dc:5e:93:c6:80:82:cc:75:fd:f8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 8e:c5:b6:ca:5f:cc:7b:06:48:56:60:02:19:ef:f2:85:a5:8e:ff:37
Fingerprint (sha256): fd:d5:42:d9:05:9d:12:d8:ff:8f:ce:cb:8a:06:b2:98:b0:58:4e:ca:18:c5:95:8b:83:35:b9:fe:60:d4:ba:e9

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.jkook.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.jkook.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.jkook.com

Other certificates including the domain name jkook.com

(limited to 100 certificates)
jkook.com
jkook.com
www.jkook.com
jbjyj.com
currencysignal.com
jkook.com
www.jkook.com
jkook.com
www.jkook.com

Certificate

The complete raw certificate details for www.jkook.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 317214701154831846010113405657838724455316
 . . . . . . . . [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 2019-07-17 11:24:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-15 11:24:32 +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.jkook.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 794192731190849323572306832551093640396817527367297862270837343787793084825574488591567614823566703468479008853879518068144731619328526662441926992691325462575464433258672706938248358542009473052310741435308946183874220839974129401720924714048116815330292564364305382438915288309062715317967205622742519396199698216522270594396042321079655681613733351102321896294773957002828770756890290798125024197221976648733873952069048202982257690564161135180788477883302489237441726020096044854051026018101253648763848609506295908548280134652320296887509039424430367441227192618810529572203331645475159971438418418582956608020395889420744928156025999342894691738786997428166166368262040435400698474965941380031679380256584829487880989841979081378121275613468756547116977709178346778366159465861093168370071557187471333405703429934546344208881827147511335533655546997488279637564460427080532500252695847442741639489000336679479069108875733996109878567872026309435336506058296065127272819840260122418401520516396125844574673768896829460892187466558772031586115868710703266443745224670978329336999151267576144830663783546483039178065274903408434940005512929649030259853940715684224189122332657188108984383618985374770109336161143282267548639766691
 . . . . . . . . . . . . . . . . . . . . [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)
							72a864f01264f56132a8dc5e93c68082cc75fdf8
 . . . . . . . . . . . . . . . . [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.jkook.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 (242 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (239 bytes)
							00ed007400e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016bffe42e38000004030045304302200d14986f95ee7da67f30c92af7ff8e3b80987263e4d8b77e64d2ad2459ca1fcf021f3162f1c3e390b36088dff5b453b63b9fcb6a73acda8e2866882e24873f3448007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016bffe42c660000040300463044022044b907671ac62aa91bc44f5417dcde3a7b19c25ea0811e6fbcc94ae49a35865e022018166684399cf4e7aa39a159ac6c82b18314a66797078ea7da2dc302390a29eb
 . . . . [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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