strnadatka.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:34:35:01:07:1c:19:c3:ce:4b:fb:a6:72:ac:e5:65:96:9b was issued on by Let's Encrypt.

With 5 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=strnadatka.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:34:35:01:07:1c:19:c3:ce:4b:fb:a6:72:ac:e5:65:96:9b
Serial Number (int): 366214281227206475378633195384642652706459
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 11:a8:95:40:65:f7:2e:86:65:f8:62:b3:26:e7:29:04:0c:c3:1d:ba
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 66:56:20:60:69:21:bd:53:2c:6a:ec:f0:d1:0d:f3:25:fa:b6:38:d4
Fingerprint (sha256): 77:65:96:97:d0:67:96:fd:ac:58:ff:b9:2d:8c:dc:e0:86:3e:52:48:42:9f:01:ab:06:2a:39:39:13:84:81:03

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

Revocation information

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

Check the revocation status for certificate strnadatka.cz

5

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for strnadatka.cz

Public Key Algorithm

RSA

Key Size

4096

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

horeckovnik.strnadatka.cz
strnadatka.cz
turistickeznamky.strnadatka.cz
turistika.strnadatka.cz
www.strnadatka.cz

Other certificates including the domain name strnadatka.cz

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 366214281227206475378633195384642652706459
 . . . . . . . . [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 2024-02-19 00:02:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-19 00:02:47 +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 'strnadatka.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 631867758086686831325233924660270659907721555714817218936189137601362080222753153837054926871243583968991264860875472945284203807279619607151839169832907467901184563453966027049637189001749108668499979588295577602366958684957277438798180842632569551778373420016520420270150380961907620772916811524815662246389714869506294802693634592013920092299904351790993059495480696398058886445228736573072858516245391953997013820921352727763609299778457549198498723350618527555130684065610111678898551686160319518488736849904350167354389371750413632085610416113702450573045630007789176084040355244189649181339086121003773715529723646198820687422355688410069826617605521887988649951866432872250936670018180951739618852776627309223659532218149390049639261402744130829711046913018797097635373147942418082934047422966843840984084383861196462400615855990431707759612013299402024217250930653042123726856751238197647561941105960973134977169428502318104789716772388614542507727809030447577164575598200360988421794021991631083903887927038202420310412547447637401098054888256057985533281103950515360266398656441222760903796977532372708074721270481766067387578433339794143821976837108046223985327008196524719365340767608868395524242917768027469934487611689
 . . . . . . . . . . . . . . . . . . . . [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)
							11a8954065f72e8665f862b326e729040cc31dba
 . . . . . . . . . . . . . . . . [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 (120 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'horeckovnik.strnadatka.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'strnadatka.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'turistickeznamky.strnadatka.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'turistika.strnadatka.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.strnadatka.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)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018dbee3108600000403004730450220627b9103a8042bdf7d4b7e3820f8e3bd4a685f1a7bae54e8007acac2be9a0d1d022100b4b85535748f4da2b915aea0881af2c448b41b208ff75c358b744b24bdb67b3e007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018dbee3108c0000040300463044022020c5d9b8543f0bb4999a4a8736dd2331f2eb4ac1dca0195763712af90231c2ae02204764c1d688b4284244c243e2e85c86ab3f08bc16a9443f3cfaac4e287ba07eff
 . . . . [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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