www.jkook.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:f8:72:59:e6:4b:90:60:30:d5:36:cc:09:fb:b4:4c:35:32 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:f8:72:59:e6:4b:90:60:30:d5:36:cc:09:fb:b4:4c:35:32
Serial Number (int): 345878883568554372045312250098795563201842
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 41:21:b7:5d:87:01:f6:ed:47:e8:6c:04:56:02:1b:90:d0:0d:66:6e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 63:56:8a:31:22:1b:e3:1a:55:ca:17:90:03:5d:a1:f3:d2:57:ea:af
Fingerprint (sha256): 3d:30:21:af:50:bf:07:6f:85:df:3f:b7:30:5a:d4:37:b8:9b:e3:9d:03:ef:e9:96:41:70:c6:f9:ae:3c:d0:cb

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 345878883568554372045312250098795563201842
 . . . . . . . . [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 2019-05-17 05:43:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-15 05:43:41 +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 794633350515856394359237184109933296142846842861654786239903192590711001316918478740497691408185002731996541528308221520555614270949316090367864250075918233787221322398840272218216707407314909973996438249138813219332593414583747593550311381441529658544680470474694289113703422001958468916750622992963222468364582170661997470960918345667206824199530442670287908983471491100685648658426549276840058278145338640923843931068116387499539240190249817790910036617365418222991587911929820032279222886755686849423718133019903011042376121300802232051763615829133487605881705366068086632711171511804262137806942702996333583079273248072000478161972906927902912825378730684456403738953562285470639927087391501294594072093108166154068836561509198716345802563997400713078398478887211215470316585114926606890515088104020987333866195710635855504059850653687193568489914909921906916046650944391179255414765086930400732770746782606394573729270500240918978215349236013404014275097205400956206730519813295414411647295183199886434053966594171481287262514722198311199942982064492809152810089271315526282615458694637667488483023113038611450734960258336325724921718462969323892195969314558268362426777185152152011840513610706393273088482956794655168480149901
 . . . . . . . . . . . . . . . . . . . . [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)
							4121b75d8701f6ed47e86c0456021b90d00d666e
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016ac48833a60000040300463044022068c144ad168cda9e9bffe9a5037860fdea49cd242065021cdde8392ec55682f40220154f5910927d284a0aa53864f091cdeae4939348356b3c24b31f72bdd47d1671007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016ac4883387000004030047304502205876f38d24526d6af203acdd18bca7d08af435c238d9714a561215da77212643022100b5ec793688c17be7687b3d39231d2457406d6d538eb474ce9290360bbb18b034
 . . . . [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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