www.komakaku.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:5f:8b:6d:7f:0a:57:28:d9:01:da:c4:f0:c1:2f:39:4b:83 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.komakaku.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:5f:8b:6d:7f:0a:57:28:d9:01:da:c4:f0:c1:2f:39:4b:83
Serial Number (int): 293849013881226853438017191558572152540035
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 21:45:c2:3b:ac:4c:2c:eb:6b:4f:b5:e7:c9:e2:c3:6a:d1:bd:b3:c2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 19:66:75:7d:a2:49:2e:38:4b:a7:c4:ab:ad:49:7f:85:7b:67:53:22
Fingerprint (sha256): 2b:a1:cc:0f:88:fb:b5:cb:53:7a:07:91:c1:de:45:8f:f0:01:61:6d:15:49:67:80:b6:55:34:71:f0:8d:ef:6b

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.komakaku.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.komakaku.com

Public Key Algorithm

RSA

Key Size

2048

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.komakaku.com

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqts0yeLgDWLpXG8sRB2i
Q8Ij3zzELdn6D6ExCQIkUHGCv6Huwl9Q8PIIXsiZyat+iSQvQhBZ9wSHYYuYFWvX
Dt1Kxj1ANOKFWDkWWviC9zWdhdaKPdlYztCJecN+nArrGPn6JHopjPGrpoCyNq5O
HXNynFGBtfv0aHfPm371Y/eUraUOdEBDMlX3toOcyhILlZnjQh6GldEV9NsGdz5A
PQ/Fzwnwjvpt4aPJHVPaCF9AGkA0l4YO+qq77J8tvq+d/DXLsdDzu/zHhyZrFyID
a8C5x+cwh8P2ohtDc5YvLg4JhnGypIjY/vxM46ZOlhq1BdEIkF49LQbJWWD5XlVU
VQIDAQAB
-----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 293849013881226853438017191558572152540035
 . . . . . . . . [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 2019-10-08 01:54:38 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-06 01:54:38 +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.komakaku.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 21568606452922690464864403781649019280961512127316632854929112643012038414038224595040510751632868531122477333584876446165837603625890439078745414170116471873349413242052735976324415418248848035355652012025457321934294096855115246667661605884744928569294794130324006629253935453396506329344254897503334365392763771226275441384004031569771088940838972006575176183041851114277237278160067752102229966712139703402478119486244641289618734827667934325278517137296275359279364379199554779343298633087796514429888342277602488481638322208821470427441211758426417189710073899496974886089506309537113040742478990983704381576277
 . . . . . . . . . . . . . . . . . . . . [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)
							2145c23bac4c2ceb6b4fb5e7c9e2c36ad1bdb3c2
 . . . . . . . . . . . . . . . . [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 (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.komakaku.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016da94a40440000040300483046022100c5e088324ee9c0914912657572b4a520684f9d6e15eef6e576f786693d69346402210090f7f024d387ee13b963e1bf57788907875fb4bd8c11e8af67e2733b55ce90ed007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016da94a3e810000040300473045022100f3db5c24a6aad9e41db31050f772319885db8a506e1703e83e55118743e516a30220079fadb6e70a517f2b69f7e7f271ef72e5592ff2ad47d2302ac2ff122ca064af
 . . . . [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)
		002b239ea010f9bfe9f0de333f76719d1d294f8975b9372792acbdc48b339a2cc697dc27dd79da369eb6260f8d5e0f8e364fc5fb592ad1bcbbc0f73972c230fa6a3ed7bd9733a6038b39599cf1cb2f495170197d9edc79fb3fad008b594473444b87e74ac3670930654b93d5b8febd6b013a585d8ac249c09f843a369e539f802aa8d0bbec04cc6e2ee45294cc632d953df16c97467b156a80237388e634f1e550419c928580aa899140f7d4dfe4b5f2a67c5c480628943b5d027e5228691d7c92919aad5b92fc0f6b48c2eb04f7cd214120867d460f1f24ac7da31319204e91ad7a6fa514ef7a42bc98e19cda622dee7187e59041e987f75052f2304302121254