klokka.com

Issued by R3

About this certificate

This digital certificate with serial number 03:d1:07:70:2d:4e:9c:4c:e8:53:dc:65:81:4a:8c:88:27:5a was issued on by Let's Encrypt.

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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 will expire on

Certificate Details

Serial Number (hex): 03:d1:07:70:2d:4e:9c:4c:e8:53:dc:65:81:4a:8c:88:27:5a
Serial Number (int): 332465759533912130592989906504003216746330
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 28:5d:19:04:f2:53:bc:39:ac:8e:86:37:00:d7:ae:18:55:ba:f9:2e
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): b9:f9:a9:91:95:d2:ee:d0:9e:35:43:4a:18:b8:4c:ee:04:53:79:51
Fingerprint (sha256): 39:81:f5:77:b3:9a:d7:dd:71:78:e5:fe:27:e6:68:04:5b:10:35:26:a2:bd:a1:3c:f3:ca:25:b0:00:cd:54:be

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuamHhGfVxqkbrKeHL6M9
KtsrzNdf7GdOi48mtERH9rgAR7pJn1lUJqEK84gWvgIg6LdsgpKTez1HuuZaO2Iy
gLNC/nR+QPMHANo3rKgpAxZ8Anyt37rVx23Qv7bwCB3qCcmLtckgF5oSI7mcl+Ru
tNaGHOzT8Ijb7dQBIT9NLiS4R4tkVGal8XeAGqjlAmQokQZ3a8voZ/05h2beLViR
Cmt2yuhPwflxq5JQ42psET9//801fNqorW7e4MA1Mxl6CbUuOCV6+0l72tc3qUyj
s2DrNC05tSHp9FcojUJB2yW4Nc59CgyJYRdP04AEMET/cm9+wPkgVDCRoW7SZ8aj
bwIDAQAB
-----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 332465759533912130592989906504003216746330
 . . . . . . . . [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 2024-04-23 07:16:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-22 07:16:39 +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 23437684463899977321322566683880348708503297018583348219600410611687537917195103770166119567119319862102305009256344478278538998306925311550695178454169497996448581335974459816013598159992894005862990670633803446381980164108033074826349086781666686857571483610023881664935367828048706476334509797867732210688763502057992078805087046682484256207755209384732884567348308874333273845638214400126091011511490634000281431718285528180349525920384516607804685899092491521629101092348601905520514991006354108971854383531852010819458484738530458557497612230208272529179956241703862373697240343245307910410338868183070337835887
 . . . . . . . . . . . . . . . . . . . . [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)
							285d1904f253bc39ac8e863700d7ae1855baf92e
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018f0a074711000004030046304402204c834673a2fee66d58b36fba8aa46e5faf50513f6cbfd2ee17a390edd63be10002200e1b0bc640c13cf49d4628332f77b3ca8d12fe6d9b6f3e6b971cef16b4a45181007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018f0a07470b000004030047304502205a65d99cb9a90631873c3abb3f3c6f7fc2805f3da38d3d2095c05ff2398ca70b0221008770d6ae531eb504d91860dff2a814bb4b09f4f20f5c0f020277d7ec54086203
 . . . . [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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