perfektnipradlo.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:84:93:0a:34:b6:7c:22:53:ce:88:e0:80:ab:46:43:88:01 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=perfektnipradlo.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:84:93:0a:34:b6:7c:22:53:ce:88:e0:80:ab:46:43:88:01
Serial Number (int): 393561865668097074353199186689166202341377
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 56:fd:98:d7:12:90:92:16:bd:68:a0:b5:15:07:43:f9:15:02:ce:fa
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): fe:8e:b7:c2:f5:cf:d1:c1:46:61:44:17:cb:b3:5b:33:28:59:c3:ca
Fingerprint (sha256): 37:18:7f:31:c9:f8:d8:fc:fa:f9:25:bb:fc:29:ad:7a:b9:c3:dd:49:78:ce:f9:03:06:d3:1e:f6:17:3e:00:8c

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

Revocation information

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

Check the revocation status for certificate perfektnipradlo.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for perfektnipradlo.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

perfektnipradlo.cz

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApVvsNzVccgcMpQoeDm62
gJ1QaI+3QAUnSDEJVtN8ONWOFiGXQ+RIjTKqbCxYBn2BcvjT4EBE2sBvP/M40ZYh
VeivGt69fDPfCNLEVSJ7gmi0Z89LhKz3dCsCBbJo8bhCNCQTBYc/Ms96aNFmJRbO
4fGB++PnLeGBjCOSsW31XUCSazVzoX5lAww9iVBgukkeQPYV7QGFhLDjfHLcgRqT
4zqHxdwYXiY+CQox7uEevrBdGdnMk9nMLp56fRModOF0TbL9MXR/611mj3xTZmng
mSAc69WJYy0FwgqUdplK2B0N4JdKxgjxhJHegrpQGWPjjy2DEJh4pr0rQNweu+Em
VQIDAQAB
-----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 393561865668097074353199186689166202341377
 . . . . . . . . [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 2023-09-10 10:36:23 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-09 10:36:22 +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 'perfektnipradlo.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 20874649100783318818975855609710163453774618053279755940887931346693182793044571970114238525978665417465915497139560960327462685660676972825900716966950877872705995554055616163549082322232396656212754341174915481590210147254376213107485484495598527488574117140276484847743038499684808419800271102895638851723544334854859052493650445420064682127109315596041772482754991411035108094478016793233458032277274166409826896714378091431324146608842841480563111275517081023181349340625839325920741575275888329901314702978906478228246788906814350260943192632718822802154213713976973603952717906335533856108000256551821322036821
 . . . . . . . . . . . . . . . . . . . . [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)
							56fd98d712909216bd68a0b5150743f91502cefa
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'perfektnipradlo.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a7ee0e90000000403004630440220683aef175e561284a7282ef94fe09eab01f090e61fa18819bf51a7ded89e2a350220040d75f77bc1a26126c9dbcdd629d0c207af68d7e50113034fdd7ff051ac5a78007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018a7ee0ea47000004030047304502205a3b94d6617885379f89cdd2de003a001fb8a10afaefb2e1ac4ace96cc11d7ba022100b7b811d73e0ebbd67cff816539680c5308b31832a3c38e0616b4a075e4a84dee
 . . . . [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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