www.vyvoj.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:c7:6c:45:61:16:3d:05:19:49:b7:0d:08:a9:72:b4:e1:23 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:c7:6c:45:61:16:3d:05:19:49:b7:0d:08:a9:72:b4:e1:23
Serial Number (int): 329196965673731139865636236423085713318179
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 10:d2:71:ce:df:f9:bc:e8:2c:de:e4:2f:76:45:86:41:92:e8:0c:d6
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 7f:ca:88:8d:64:9b:e4:30:09:f7:db:5c:87:64:b4:e8:98:72:87:9b
Fingerprint (sha256): 1f:d3:24:fa:17:95:92:e5:11:48:08:b7:72:92:e5:97:a4:78:76:81:e6:55:7e:c7:af:89:86:ad:ad:de:58:81

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw8Heb4o/+ztU5f1U8nAt
4JDkCA9Si8iwPjwuzK0UqkazoCreQtl+ice9xwNy1NfgjjOA/Q5gD1BhomGTWKln
Gpq/pF6wzcR5E27Ewgg+6x5dX76sFSiVVwVM6XnuqRowhJhFG0GEGjP2htW71usE
c4dJaN8YXstAd95ZmRNWS0jaYDZlsCXeSagoCrodiTHJT6L5/1Q5J5fwwq2e4O1d
vgZbBZHpSuETQBH2y8vHEhDaPDEDfl6hrcwIUIotozBZ04JP+jmCaK2Ye0XnYkkK
t3krPAo+atZwNwjx4ZIF+VUIDTV45rtbmiDW7xbT2kpud81Ek1HtVbrzDz/mAHsg
DwIDAQAB
-----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 329196965673731139865636236423085713318179
 . . . . . . . . [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 2023-12-14 10:24:21 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-13 10:24:20 +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 24712069780849518807641872744750298594646165055865983156203193948436749934961838855445036590864220909432605269813499942587741792983090428684663519465435742509919450830102900325613006004391436919985882645002263496253734146242632621103646426275960484705909977864139354019647345859252727549331942760358136088366768592761387301583846072486976735451532617752055682146455097597034869856441778702541903732104580242401256968170548596074097220244272737305634950860701472391158621765636150810979217983681869181948582917927733442572074382303861654116509832364524598374456235518169252388510767781727359667604902751936019391258639
 . . . . . . . . . . . . . . . . . . . . [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)
							10d271cedff9bce82cdee42f7645864192e80cd6
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c681207de0000040300473045022068ab677bd774591dcc42769391b6b67a9e31bffbbf42ecc24fcbbd6a9a7ba72a022100e5396de254001e38cbfd5aa982b5a6cae845d99d6a2517e56a003bb1dcdd761100770029d03a1bb674aa711cd3035b6557c14f8aa78b4fe8389449eca453f944bd24680000018c681208be0000040300483046022100f12c52d2967b81a687d8b7be33a6fe3c3bc8009e018649218e9de85fdece6644022100ea8439e2155788b01f654298ba15fcd5bfe74868fc02144872932fc467d72340
 . . . . [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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