public.relations.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:a6:84:0f:c0:2d:5c:42:87:bb:7d:c3:34:98:0e:c2:8e:6b was issued on by Let's Encrypt.

With 8 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=public.relations.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:a6:84:0f:c0:2d:5c:42:87:bb:7d:c3:34:98:0e:c2:8e:6b
Serial Number (int): 317999270581869476057677967205992065306219
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 41:9e:3e:e4:2e:b3:26:aa:3a:94:ba:b7:5d:fb:64:65:89:22:e2:3a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e6:c3:31:8f:b9:7f:08:8b:08:73:8b:41:91:10:98:6a:8a:9b:fa:13
Fingerprint (sha256): 92:5a:d4:04:7c:1f:37:b1:cc:41:f6:3b:4a:64:f7:05:1f:66:d6:a2:ec:5e:c1:3c:a1:cb:a4:1f:79:23:8e:ac

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate public.relations.cz

8

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for public.relations.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

czechophonic.com
czechophonic.cz
public.relations.cz
relations.cz
robi.tkl.cz
www.czechophonic.com
www.czechophonic.cz
www.relations.cz

Other certificates including the domain name relations.cz

(limited to 100 certificates)
www.relations.cz
www.relations.cz
relations.cz
public.relations.cz
relations.cz
public.relations.cz
www.relations.cz
relations.cz
www.relations.cz
www.relations.cz
www.relations.cz
www.relations.cz
www.relations.cz
public.relations.cz
public.relations.cz
www.relations.cz
public.relations.cz
www.relations.cz
www.relations.cz
public.relations.cz
www.relations.cz
public.relations.cz
www.relations.cz
www.relations.cz
public.relations.cz
www.relations.cz
www.relations.cz
public.relations.cz
relations.cz
public.relations.cz
www.relations.cz
www.relations.cz

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwZFarH2R8O4G2IdTR4BY
QqsMtCRL//opn1mDLokTJNDQHPCyaJcvr4bWD6EbmyNlfgeQhDHcYKAZ0w0o+nqS
kXJbIiptZp1GTtSkfPsB/fhRF2wlv99Ybfxmf/QzdXyJ5kJ7yppEYXjY/zmfZ0L5
CAzUNuNAwvgxm26IxO4b1mWoE2ozRHs+pNsBd5dHQOTkRx1JsF9rP2BBC5b7ZtzB
YA3PZkrKpUcQ1zLtZDM5oHkEQBiFrWcduv3XEUcHXUuF8TZlvyAlAFfeude8/gRb
z0Eq6lvQ5fIZoS+n0OLAKgMxFmYTSzR7y2SvSZeVMolVZmA63pvoNCdlXz5IcQZa
RwIDAQAB
-----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 317999270581869476057677967205992065306219
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-01-31 22:01:58 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-01 22:01:58 +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 'public.relations.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 24435669683187271353152112727064189048773744952463276403305624972879148973414730211342619770278355844732471138773381465588135171120748770736438118967218154077301885486255636735918042939408115216537236541246280606137407152328294075590535108113168533522799043979637428154094726996637666249996287918550247390329874867147251318248132419935371778249855888207171226856056734109429980125425504402429275671468593191284425490265477355093202694419403862701060223025214844397760815676586708927915600713683351253649586047418954150255361631851954746426479391799926175794525317796489094923803414699019956774499300083696025280600647
 . . . . . . . . . . . . . . . . . . . . [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)
							419e3ee42eb326aa3a94bab75dfb64658922e23a
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (147 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'czechophonic.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'czechophonic.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'public.relations.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'relations.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'robi.tkl.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.czechophonic.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.czechophonic.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.relations.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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc5600000168a625c0810000040300473045022100efd49463468fe6a9df6a6ce99249261ee403cc64054f70692741740b832d3e56022019d2a21b67bec36ea4f356ade23f4e5aa1b552f53974e2cfe58bc2574b00b64800760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d00000168a625c086000004030047304502204a67144673f9526cc1ea393bb1dded308c584ee88d4e1d300fce21f6e7d797a6022100ab4d98368e8e007c3bd79711af6a88f1700f73cd5679d5484ad2736eb80b05e4
 . . . . [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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