santoska.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:a1:1b:e6:af:b3:99:e5:9a:fd:d3:cd:64:a0:de:bb:ae:8e was issued on by Let's Encrypt.

With 2 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=santoska.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:a1:1b:e6:af:b3:99:e5:9a:fd:d3:cd:64:a0:de:bb:ae:8e
Serial Number (int): 403271691749126885454559599354966064213646
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: de:77:c8:fb:2b:5b:d2:20:5f:17:af:f3:d7:d4:cd:b8:30:0d:77:6b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 7a:54:5b:78:a4:7c:0d:85:c9:68:1a:d2:fa:86:88:5f:1f:81:63:35
Fingerprint (sha256): 80:f2:36:8e:5b:8d:df:9c:55:bf:22:3c:9b:0b:98:c9:08:21:4b:aa:78:83:77:c7:71:08:7c:69:a6:65:39:59

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

Revocation information

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

Check the revocation status for certificate santoska.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for santoska.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

santoska.cz
www.santoska.cz

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwzhVFXB5PSDKTV9kXSIA
j7QpzfCq2Vcv51FNCtv4aFCvFN7ab/djPCcKX7GPDDyMC0Coo5T/ISnRA7QFwq4h
Go3p6Awnr0lQ7EYqlnyxucF/fqnzhtDQ8Q+HiDjr59mLf9/qMi8qlKjDFR1COrgo
ZpW61ndN4y72uLTFnLEafFdAaAf0uUgpSiaC53Kd+U20td8c9YZ/h51gN0ryot/V
GZc3wYRXJwFYaycD/Hz+O3dU5/xiwWmqpK54pwvDyUgRmVCSpS2Ad/AQph+y9RFA
4rDJsebYBnA34SjhYa7sqeAYaklHMA33RqCed1PqOyo3Qb13wiVWFPbbWSBf1U+j
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 403271691749126885454559599354966064213646
 . . . . . . . . [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 2023-10-03 10:38:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-01 10:38:14 +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 'santoska.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 24644247989622474801602289063947763631889350454542406668718336687647587641974753823057787174736398146875821826880753662874349847533305745550994922284143795789308229445869902533651168950022594403449234390652401419752423883738077942631574644784998598126702789588657101928538911266644274761376441162823246442669740403929756106586666243035419790913768513023910492907724802666751031616567660748777576962869538020185277893301855758118245784342986055800612128382322942699521125753727635863256913455988721359609831983232131768900780546157880948208396146499463171805769872738249076253295211480493129763434664481537118455178107
 . . . . . . . . . . . . . . . . . . . . [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)
							de77c8fb2b5bd2205f17aff3d7d4cdb8300d776b
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'santoska.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.santoska.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)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018af554e4070000040300473045022100e329cf67d06d45d6f4c0d03c2be6a5fd81dc008bc870ffeef4a8b6591baf703b02202d82706ffee4f4cd5a31d73d827b541797b094fd01c540b1f6c88021df9c3873007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018af554e46b000004030047304502201cee623f913781efb90e8e9dd4d91f05e9f2826b60d99cac2f37ed790426925e022100f84e8420f1c2edf580c9435ea439cb8c65a207988f76733a17c5f7cd828938fe
 . . . . [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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