strnadatka.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:07:d5:5e:38:51:0e:a5:c2:2c:1c:26:53:bd:1e:b3:07:24 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): 03:07:d5:5e:38:51:0e:a5:c2:2c:1c:26:53:bd:1e:b3:07:24
Serial Number (int): 264002449144971150686840386677722427098916
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 95:38:1d:de:bc:ee:22:85:59:54:34:0b:21:5e:a7:cd:01:04:ca:58
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ed:6c:2d:f8:d4:53:bc:d1:97:8e:5d:96:59:b6:82:26:5c:09:1a:20
Fingerprint (sha256): a0:f1:72:85:46:f4:e6:92:54:2e:1c:51:49:18:9a:0c:c4:32:f5:f0:f8:f6:3d:19:bd:14:59:6d:72:74:1c:cd

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 264002449144971150686840386677722427098916
 . . . . . . . . [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 2023-12-21 00:02:53 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-20 00:02:52 +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 703639566359526431163010897635771012625331356566361790277982572532654229205927981124259591546985193182995872546338132722110879500196354605317028672985256964392366990293571721054972228456168421485939422568847052529355073965015244910065079145454526193203874434414635556616156173253276795157858451281791173660749505111046633123413417292858250286341739343731762530428822201132921467036913205468594910052123048488991586337958463681425429503372158869309263023846483587978287033668596617417787050138339065260034761936161675070541247132993651536466035568224016294573061587132077270084196715674014571137638633630668782488131795782834929779887100294592877916915500663892253900252860039457586587838240593701291320979945431698807477038520164592405267452478004268092512009341411257505452226536681421405920820993256191285560831580465245580159446681915525224543781479171147812166900319605918776194152522556794098398266192348441872491965441217002202824891904552873668158233392366335010826602449334106803206804523306842547376582840751147724354152231108210610003657845388680272113720082458108436819359011547319273090474107731556506098020675400591213084683044702846321559357868453729299199204094295104604956032766096682898422265776178855170885872869351
 . . . . . . . . . . . . . . . . . . . . [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)
							95381ddebcee22855954340b215ea7cd0104ca58
 . . . . . . . . . . . . . . . . [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)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c89e595260000040300463044022010296a0ac24ac92bce7ac0169a927e75f13a1a263bcb4985dde4ac1891b4df980220645e281bab30745accd627d8c797e4a450e91fa8a467fed955353397e927cfcc00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018c89e5979d0000040300473045022100c37ab905fc59898cf67223c1deb833786674c699d1f2948bc2a85b2da88132c802206e7cbb81e7827a57b4282e16c0084aa2ee49891b69c12e3553198b49b8a44e0f
 . . . . [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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