www.vyvoj.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:04:07:a5:68:e8:72:4b:3c:b1:45:d3:1a:d9:9d:15:1c:61 was issued on by Let's Encrypt.

With 3 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=www.vyvoj.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:04:07:a5:68:e8:72:4b:3c:b1:45:d3:1a:d9:9d:15:1c:61
Serial Number (int): 262708150715703551181645480033836353264737
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f0:01:6a:03:ac:47:38:71:88:5a:0d:84:41:95:56:fb:5d:33:ef:78
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6e:7d:56:63:98:1b:63:0f:9d:d6:d3:25:9a:1a:9e:e6:cb:57:36:f7
Fingerprint (sha256): 2a:37:ca:f2:d3:63:1f:2c:18:0c:69:45:66:be:cb:49:d1:e4:9b:74:1e:67:7f:ef:6e:54:a6:2b:2c:88:52:85

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

Revocation information

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

Check the revocation status for certificate www.vyvoj.cz

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.vyvoj.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

jidelna.vyvoj.cz
vyvoj.cz
www.vyvoj.cz

Other certificates including the domain name vyvoj.cz

(limited to 100 certificates)
test.vyvoj.cz
www.vyvoj.cz
www.vyvoj.cz
vyvoj.cz
www.vyvoj.cz
soutez.vyvoj.cz
novy.vyvoj.cz
test.vyvoj.cz
www.vyvoj.cz
vyvoj.cz
vyvoj.cz
www.vyvoj.cz
jidelna.vyvoj.cz
soutez.vyvoj.cz
soutez.vyvoj.cz
vyvoj.cz
vyvoj.cz
test6.vyvoj.cz
krejcovstvi-vyvoj.cz
soutez.vyvoj.cz
www.vyvoj.cz
www.vyvoj.cz
krejcovstvi-vyvoj.cz
soutez.vyvoj.cz
www.vyvoj.cz
vyvoj.cz
soutez.vyvoj.cz
vyvoj.cz
soutez.vyvoj.cz
jidelna.vyvoj.cz
test.vyvoj.cz
test.vyvoj.cz
www.vyvoj.cz
test.vyvoj.cz
vyvoj.cz
jidelna.vyvoj.cz
www.vyvoj.cz
www.vyvoj.cz
vyvoj.cz
vyvoj.cz
www.vyvoj.cz
krejcovstvi-vyvoj.cz
krejcovstvi-vyvoj.cz
test.vyvoj.cz
www.vyvoj.cz
soutez.vyvoj.cz
vyvoj.cz

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA42BaXHMf1fg6qRPM8DlS
xVoPL/Ew9EaHRVSsK2nK3SwJUjcXjhdUQjPUQcsgK5aFmwRPp7Q7wpyNCRUzTZMK
WCuHCIRyFrfv1pJswbqydF6b2htS7f2Fy0/otxqyXZJPxjWYQcDFBA0Hz+tHTnoc
pQST3YuKYO+ejPEEoCkTqMAQvwE2zYAULR7bqHN/wykvpbE5zl1xzRW5TVkE7iwe
n0jwXuxK+59lHx/b8QVsn+76eXxfRNAwTS4KIMng5N6S0NPeJVZ/EHqv8cWHa8sf
O1HodczkDMg1b4dKljOF8948QT+hKIvpsRDXWxJn9pfgNdq4Jr08lmT6SiUC36Lz
FwIDAQAB
-----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 262708150715703551181645480033836353264737
 . . . . . . . . [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 2023-10-18 11:06:12 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-16 11:06:11 +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 'www.vyvoj.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 28703608649215186648927796644931782963042262419561165934928891551252153448591317702478910285110134830296115549435358663279674018658119608658683659442893987946967907048680795489592206610703890930426896542621765010118370297897068440463753226416749643845682835181851365299011686033962034769212490812601118745360754305851094089218076825166436033596618735734806249757637141951102569555547834124965370691182075025783281099230149075286722438862279293707547898924059857987150394712227101015505800651428875449033334601142085463077661023638917801111144216405818389557277692602729086757143531467347411704109681570814918278705943
 . . . . . . . . . . . . . . . . . . . . [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)
							f0016a03ac473871885a0d84419556fb5d33ef78
 . . . . . . . . . . . . . . . . [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 (44 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'jidelna.vyvoj.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'vyvoj.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.vyvoj.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)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b42addf1c00000403004730450220469ff365f392ec7c48270ad7e33b4b8b6e59e61c6b25479f1b308ce5e7b1a0bd02210087dfd5f3b52442c9f8d458a830ee8c081886030022cfc211f84ee3b07a9e58ab007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b42addf2a0000040300473045022054be6c546d4ef79f4c6756187e7b5a83b5ff488083632f7fbbf397430fb93d0e022100c012c635f86b9fa608834de4050a68fbbcc0f8b516115032fa39ec5c8e030d11
 . . . . [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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