kakadoo.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:ca:31:05:d7:79:11:9c:04:e4:76:c5:90:ce:c8:58:41:9d was issued on by Let's Encrypt.

With 4 subject alternative names this certificate can be used to secure multiple fqdn's. 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=kakadoo.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:ca:31:05:d7:79:11:9c:04:e4:76:c5:90:ce:c8:58:41:9d
Serial Number (int): 417251344348658432068041528641749675164061
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2a:d4:c1:df:94:38:d0:79:31:4e:f9:d7:dc:6d:b3:ae:c1:41:78:c5
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 99:ff:bb:43:e1:5d:d6:35:db:d1:f9:8a:e6:6c:a4:35:37:21:5c:38
Fingerprint (sha256): c9:63:58:c2:d3:b5:55:4b:e8:98:3c:a2:fc:9c:c5:4d:c7:37:40:7a:f7:05:ed:3b:7d:60:d1:27:28:0a:e3:ff

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

Revocation information

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

Check the revocation status for certificate kakadoo.cz

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for kakadoo.cz

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

admin.kakadoo.cz
api.kakadoo.cz
kakadoo.cz
www.kakadoo.cz

Other certificates including the domain name kakadoo.cz

(limited to 100 certificates)
portal.ppsms.my
auth.kakadoo.cz
www.facegroups.org
kakadoo.cz
portal.ppsms.my
www.zenreki.systems
kakadoo.cz

Certificate

The complete raw certificate details for kakadoo.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArwS4NB9yKrkqFNWLosqG
sGxwz6vsifgvV1vtETrkXxuVdFFsNeaUx2bVDKa3N1gn0DyufqAU73zTRR3UCw0u
oBQfkyDG9H4S0cpiwfcrlppNO6RcbwgKahfeFB73zae9ItRLOlcfFxT1qE7nT9Yq
6tz2QacEZ1bZ7nsoxplYudCYm1PKb39zC+3BkJj8x4EyJurJupzL7Np/FN9ARcvI
fdXjYS++BnEWtdd4cBcCV6BRRH5vVB8OsfgLLut6lSsICH+obRMeWAEBP+O1pM6w
juFbcrzxh5nE7CxC4Db5z6Td38zP0P9/qO1Q8LhEAxN0SEhSnQWbDiY1G23yB3bB
EwIDAQAB
-----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 417251344348658432068041528641749675164061
 . . . . . . . . [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 2023-09-18 03:04:03 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-17 03:04:02 +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 'kakadoo.cz'
 . . . . . . . . [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 22094030663602606382910478451334955334209561937689495694400461883491909832508151954109179957733554984328888852039965972318633486978877323535407939408165679712435123009809861719026166436571170286727371854119581922782606151096120227843579164451897467109126111883342960542193719089438906364371557996499457522000633856464534273355598103894700137554374016772611077504337247140335637839887720739856121269917262128707938937912797998991636825465673743254667635248182965285680618937403748626983017400081669317759227935587190805174800882174602954550565915159929751644499444127391196730926641621672504748158052876410683114570003
 . . . . . . . . . . . . . . . . . . . . [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)
							2ad4c1df9438d079314ef9d7dc6db3aec14178c5
 . . . . . . . . . . . . . . . . [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 (64 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'admin.kakadoo.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'api.kakadoo.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kakadoo.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kakadoo.cz'
 . . . . . . . . . . . . . . . . [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)
							00f0007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018aa675a90a0000040300473045022071c8d8287393d585563c9f5dcd20426d328d15c47919a28a32743a1079b1bd77022100958afd535a6001144dbf43dd1791b8a0faf033a766ed649475f05092e61a92010076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018aa675a9140000040300473045022100fa67d0bdf8679473da43f5285ace5fe4f235e0bad0e937965929f068fc1a4a3c02205a5eeb84e82b2e79200aba30087c949a0f02167e3234b6960fbf2b0e82601830
 . . . . [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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