www.codeplus.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:b1:6e:36:2f:e4:26:71:67:21:95:fc:3e:23:2f:47:af:ba was issued on by Let's Encrypt.

With 6 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.codeplus.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:b1:6e:36:2f:e4:26:71:67:21:95:fc:3e:23:2f:47:af:ba
Serial Number (int): 408825619106962966197119167283075844911034
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 0d:e3:11:2c:7f:62:99:6a:0a:d8:84:8f:dc:3f:ee:e6:7c:93:e5:48
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ab:d6:28:5e:44:fe:d1:bc:dc:7d:4f:53:0a:96:7b:32:e3:a5:07:d7
Fingerprint (sha256): 65:20:11:fe:aa:aa:72:2e:1c:56:ed:33:c2:c0:9c:f7:91:62:a4:fb:cd:b1:71:b3:b3:f8:9b:b7:91:4d:74:46

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

Revocation information

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

Check the revocation status for certificate www.codeplus.cz

6

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.codeplus.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

codeplus.cz
iot.codeplus.cz
khreality.codeplus.cz
knihovna.codeplus.cz
trucker.codeplus.cz
www.codeplus.cz

Other certificates including the domain name codeplus.cz

(limited to 100 certificates)
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz
www.codeplus.cz

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3sqYuugB68e/avgESGxy
rHQf8SxmOgABXKC5Q2LFIoDx1GEs//iOHhrIKp/IR1x5rQ+9Axrj9KYN3+T8Lzwr
OxpysKOhxOT9WdKNlddFb2wOejrm8mybXNcYpWHM0xTfzo6u0lXPVOTgHyfChhxJ
H5VV0KfOcbSdAwLb3gW4beZJjmZ4Pb1lMTlMJZPaY2UrXw+TdmJc0yBqBZAmqGCp
5UTqZP8ZiaTId/se/4IPaUXX4GLRjHnihjpl4xh6AkHpVwjPi3+rtgBEeSGxISFJ
XqPzvSRB1010whNSrKjLL+LP2tZhUxtNX+/qugkzoX1gx/DbKuHFan3cX1yWsTaL
RQIDAQAB
-----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 408825619106962966197119167283075844911034
 . . . . . . . . [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 2024-01-31 00:34:50 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-30 00:34:49 +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.codeplus.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 28124807810370304389074660435471807103032703193661636913664413186835985910134936045984944325062780792682693277206500976747002453611165556313790826649196438309923724426006537787602109981158343510154353736466420366908166588885025180885587207711459134186169488402557460126098346540817441317476160220327874767869183171865995546836862614581476159494056945315895615741727378197003259575833598398530369081709057733168546575661726220795019257520069756361872556829277126724401190249986694069879837421329674390864533692783625582916971755535818081635132890202425894430820979266065816579318601851040498604307671653520977350265669
 . . . . . . . . . . . . . . . . . . . . [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)
							0de3112c7f62996a0ad8848fdc3feee67c93e548
 . . . . . . . . . . . . . . . . [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 (115 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'codeplus.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'iot.codeplus.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'khreality.codeplus.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'knihovna.codeplus.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'trucker.codeplus.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.codeplus.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)
							00f1007700a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018d5d2792c90000040300483046022100c3a4d60e61098dc94989d9ac04d3653e8543b3090e7e54dd00be425d653a94e9022100bcf81fc529591c721138e0b7779f51825f275e1c4fb4f3f0b570d138b96c13510076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d5d2792c4000004030047304502206ae79467e0e45811eaa3c98df22007e81d4ccd9a87469c9e6542397ac8d71fc502210094a432351a8e50c13a0b5d4a73bf7603083a4f91d4d29c1a649ed1f6ff727faf
 . . . . [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)
		001b743e346b28e48e0f21cab8d418ba3f352ad9f45f9ecafca15ce7feca006bb621096741376e2e28f44428c70d0037cde69ebbe564364a0b2be7a0549cb8a788d1e52468043cebaa69f4a0c79d4bcf399fed4d7b2822bb759ad21e0df206a61279e2eadbf3795fc7439aa29b93bc49bd87dd54c36add287b8d833280b9041ff731c2d0beb77ea28254923d0745af844c891fca8f16def9dbe6eb2561321186e3c8388edb65d6d9d44a564162f6548db5da8ad34aecbb13c698e08812274439e3c1b166692ecb3ccc4031591c35d49b82bdb9f80c771e36f4ba47471dbf4185c65ed6f1ed83376955ff11b6d6fa7c59ef4f1d41f88d8ead37ae845c9bceffa84f