inktank.academy

Issued by R3

About this certificate

This digital certificate with serial number 03:34:80:28:f8:b2:cd:21:c2:fd:5b:8a:c8:7a:2f:2a:a4:7b 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=inktank.academy

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:34:80:28:f8:b2:cd:21:c2:fd:5b:8a:c8:7a:2f:2a:a4:7b
Serial Number (int): 279201894794708030540335467102430502233211
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ef:9c:7e:d1:81:7e:2d:90:01:b0:c0:7e:53:50:65:e9:7f:bb:dc:95
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 9f:5d:61:0e:e1:40:40:fc:b9:dc:7c:f7:64:b4:68:46:bb:f6:a0:7c
Fingerprint (sha256): ba:00:ad:1c:28:ce:a3:79:a2:84:82:ec:32:39:1a:f5:32:c8:b7:1e:a6:aa:09:94:b0:84:ff:d5:88:3c:6d:c9

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

Revocation information

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

Check the revocation status for certificate inktank.academy

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for inktank.academy

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

inktank.academy

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Certificate

The complete raw certificate details for inktank.academy in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAypHrHzV5W3XBca1vt8W1
Rab0LdsipqYEl7o/7vsd4V7QlplVbcHBAH5MMDhftZg6vkp1XN057T16fRX3keaK
fgM6nLO6b6fOKRb06citHRASKORppsMl2DmAGAJHybv20J2NBUJuCPjneblEsWzk
EdNJuyJPaPNVqlttZDG1dtCbziZgDZRYhh+se37gFcYDuPFj2vHrdqUwtJKOGenS
h0LMzJWOCb1p5gxj9cS2ONOUy69e3JKIb+7CBwrmdXNCaq5IbkQw+yiEbXYTajBi
EOqzQOACznGAlsG2pyMvLsr1FyW+ByIZ0f4mk5NV/VUBjDKqbVBmzwBnKsbjFuU9
twIDAQAB
-----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 279201894794708030540335467102430502233211
 . . . . . . . . [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 2023-07-10 07:51:24 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-08 07:51:23 +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 'inktank.academy'
 . . . . . . . . [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 25572092670155574417449586956639390512439800397090459821511292475289374059620560963868888633639875062320323627436868218127728328526706354645389102037724161131136359027956648488514189537815011391240945562757818273406526905160873719481737238751508285778090903982468824827307573098422442271472969384572185222569720969224031087199691490271830674942670132971008763053357431845758137128820748900542851214661943688358910657026538271597243641963496859480860754013845603132756794007706020089559709094139970185505059207792532376103608410602076625275981613837037097014018011030604979112754375299950069168858710364226081593310647
 . . . . . . . . . . . . . . . . . . . . [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)
							ef9c7ed1817e2d9001b0c07e535065e97fbbdc95
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'inktank.academy'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001893eff96a9000004030046304402207a3ce9e34403ccd486cbfd8db33d1fb5746ab03864aa0e49a420dd4e4a18750d022034165f22d0b8ae527ce758e7832527079e896cd339989a187bd2fdb570eb2d67007700e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e000001893eff969a0000040300483046022100a861aa739573bb97d0a807c8686dbbd79a7c25eee188cad379beb0d71c37bcb80221009feac2d6240a15cad1c40b44f8fa9eac6d14e6e939c6dfc733ce0076a0fe535a
 . . . . [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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