klokka.com

Issued by R3

About this certificate

This digital certificate with serial number 04:8c:42:a2:54:68:07:ce:f6:55:14:1e:c7:59:9e:8b:70:03 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=klokka.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:8c:42:a2:54:68:07:ce:f6:55:14:1e:c7:59:9e:8b:70:03
Serial Number (int): 396177247007749810766338490854866596622339
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e6:58:02:4c:92:55:cd:79:cf:1a:3e:04:a3:d0:4c:50:26:a4:ce:88
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): b9:de:a2:f2:81:35:e6:70:6c:47:a0:31:69:e2:c2:21:73:ff:95:c1
Fingerprint (sha256): 98:f4:cb:eb:5d:3f:d1:8d:78:1b:76:6c:72:9b:70:e4:8b:f4:57:d7:59:b5:90:ce:19:7a:8e:a4:ec:cf:e4:ed

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

Revocation information

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

Check the revocation status for certificate klokka.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for klokka.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

klokka.com

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4VDh2WxYg6E1nCJZKJbo
ZMT80J+LZcToUghq12utFPMVQMuXgIkUbeae8kKXd/cnyjMw6ZSubbsyiC69S8XC
TYYpKlpt5OxoQfNOX8yI4ULmJ9Cauf3RqcRat2jntZ5+XcBQOTH92m5FHMOad4C5
gKIUZ6bWP7E1utYQXMzkvKmaJtQHuK8FJUZHJcE8fvK9vxQMd9ii854nFBWz8Yhi
rIaclxF6xfwZtaWYNkyYP+lMr1dl5tvFy3h5Wst2QqRV/rRQkwfIQHPETL6GNrX/
SqsecKP0nmYDB9oKTFDXj/b/rEeF3GvWJpp1198ohqIIAhmRH6NPv++NxFKti7m0
iwIDAQAB
-----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 396177247007749810766338490854866596622339
 . . . . . . . . [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 2024-02-21 19:51:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-21 19:51:31 +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 'klokka.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 28443503128467175130716273503151765191180166953027690655504168928021409553751988182125084420159609370258569954724551738791533965970152100865777360458260891405380208743655531282925257062538699225790505940715574659946336440322377698269622477378549376826405730721417402306967386020739760171799474020516648402000338289253839698676525266126371029873235170090282872127384105960679318723160160009792695123977450361993038186089683890529293935255804074940828579317953750499383491781710723300307886076051709812508164837380654740040177754361778920758227380751051449685030311476704282872361937767987019649996308935425549905015947
 . . . . . . . . . . . . . . . . . . . . [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)
							e658024c9255cd79cf1a3e04a3d04c5026a4ce88
 . . . . . . . . . . . . . . . . [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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'klokka.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 (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)
							00f0007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018dcd701a750000040300483046022100cf4495b4b191ea0980cafde5b52a2308f6c64a9a033cde30d07ce855f8bed585022100e70f4f149013b445d76dda964df49477f9b970ca177f39e334582f8ef175abc9007500a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018dcd701a64000004030046304402205c8c5907b7e27979327e02f670d2c1fbf6dcfb431816ef02b04fac4b6f4fe68402206177e8a39c08feaf58dd541242bf3c11abaa3bfb6453a149809f5ae4204e2616
 . . . . [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)
		007e6a2aa2ddc0fe2cf947dff356ce152fc4f2cb9003f23304543a941135fc64f8aabddfef5ee46866201ff5ddd3023dd8402cac293f767b5d9c9faa51e464c372e26bd988e0750642a4ab76c3970713fe5182be77503d811a45d085fbc824cfc8d19f6bd667a26ab2ac4352959a3a2e1fe4778ef168f5aa799f556b41fa1d462f4e17c67ff657b8aed77bd0122b21a111917de6a60dccacbc3a64e34215466dcb18c8444c3ce6144fcc868a9550d2a8138389c439c5497bfdb6710d13d1d727bbe67623986deaa416a4337877b4bdd1b2b13f16a9a6e1a8a9a04f759c47a970fa304a25a33bc0c482a2049dfd590f1c18d6768798c20792f9760d12ce4c87daaa