kabuku.io

Issued by R3

About this certificate

This digital certificate with serial number 04:5a:ec:de:b3:68:3c:01:72:02:75:bd:81:71:68:a1:12:45 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=kabuku.io

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:5a:ec:de:b3:68:3c:01:72:02:75:bd:81:71:68:a1:12:45
Serial Number (int): 379389410885642901978980898845324344365637
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 9e:cb:97:0e:a5:e8:19:25:6f:6a:ec:0c:e6:06:d4:82:e5:74:4b:30
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c6:4d:e8:c0:53:a9:de:7a:09:17:30:54:89:8b:f3:15:b0:bd:8d:4e
Fingerprint (sha256): f5:15:2b:b8:18:5e:02:77:bd:85:27:be:91:9b:20:f6:2c:2a:86:10:46:4c:9a:df:0a:61:41:5f:dc:da:e9:7f

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate kabuku.io

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for kabuku.io

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

kabuku.io

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Certificate

The complete raw certificate details for kabuku.io in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6MvLZNRf4Bvo2jhpqIql
8IsoXSnPzht1RzVgMCbNXyVF8XxoOevUxH/rn5bS0APQM29Xq9TweZaiIqsZIiqb
dLwe+ccpm5k86FoXnLp6i5E23EGhpsgOX2bQhULq66QFOZGg+JIuJnH7QS5ZG5E1
C3ZvugwqCJwyfrAW32hERJyt+/02ZtH5HiLD7FobcaZpzABpAxhVQwJG65J9anRk
DxbPBlF2AGaQWv8uBq2hTQpswpFD85a+fSq80YvwAg2emrHaqfyLPmGKLHSoMyWD
xFHcazqZXI1dk7lb453iHSX5ARHAp2Z5Aah4U1py3sx74lG3z2dtpQmxwW36Id8r
aQIDAQAB
-----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 379389410885642901978980898845324344365637
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-17 05:38:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-15 05:38:13 +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 'kabuku.io'
 . . . . . . . . [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 29387781569162147961515673008241620859281141478939835536227338521712473967348022447018130632718146439462454118652948786026915087500423014778751972086987190589414483262081352820030634037724491297922810322953698673646768380583916663596934746490362087606237784806746344358888949425919770898216889010228369367150708155605267773860970858726008692107976746696001266903180741154875924358984416608786958047632581467363390117911978063299773315852706290542894897770817581052339057728578830998684493638710110076661274166361627920452665896521691878090142171057696772678032752312578416789012535945056432197576464090892131310185321
 . . . . . . . . . . . . . . . . . . . . [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)
							9ecb970ea5e819256f6aec0ce606d482e5744b30
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kabuku.io'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b3c5b402000000403004630440220192a813ca03dfeafb64405096b0c8e53a1e17d7f88dd05f3d3e4d194c5357eaa02202eb28f80198746241aedb0e198bfb739386f56515816faf1f71ccf7254b75a63007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b3c5b401200000403004630440220528353ff68196fd19a00f94f00f615d8c1714db32350dc2715abe6a36b375382022045372272c36f89b580161cd5d4df3606e5ab49414e8647a3141bf5b36e550e87
 . . . . [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)
		0094c29c07d63471a70f2a1a25d302d43bd4a8658e5e5204c4567f2d2fb3b7da4be9cdb2af7124d052bf348f465c241aef65c566e1b46b7195d1c66b5fa146a6e03cd2feea3d792844472a26b8ccc670409f52dcedde58d5247867b2d70e2b91acba2cad90e60cf417991ea31ee71deedf01570115f999535887133950db8f0496673cdbbf9034fe2944caa8e77c2076656c410bd264e7fb9db713eb85057bceb62fad953325b54f30d745ea4fd3f177e0caa7bc94602007dc63b09b0062657c6a65cf2a096ee14ec55f9d6cf54d7b2751b8a406477a71cb08799c4b3579440cc73c10a13aaec2c95ea654c1bcb1f0ca9f1eb12be221deb958770321111a30bda0