mail.uvt.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:87:ff:2b:42:2c:58:46:c7:aa:e3:bb:9c:da:ad:11:61:2e was issued on by Let's Encrypt.

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=mail.uvt.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:87:ff:2b:42:2c:58:46:c7:aa:e3:bb:9c:da:ad:11:61:2e
Serial Number (int): 307614155079449896292818584813045164368174
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 5c:e6:d1:75:4b:d7:1c:74:79:3d:37:2a:5a:39:d3:7a:06:af:ae:dd
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 89:47:e9:6d:b9:35:7e:ad:20:cb:42:4f:01:37:be:53:62:32:b7:bc
Fingerprint (sha256): 76:e5:62:12:28:46:b2:2e:f8:1f:fa:e6:70:7d:b7:2b:b2:13:ac:91:42:a1:aa:2a:3e:38:4c:34:31:3a:89:db

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 mail.uvt.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.uvt.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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

mail.uvt.cz

Other certificates including the domain name uvt.cz

(limited to 100 certificates)

Certificate

The complete raw certificate details for mail.uvt.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 307614155079449896292818584813045164368174
 . . . . . . . . [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 2017-04-13 17:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-07-12 17:00:00 +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 'mail.uvt.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 725788798793198908008292016655808764432910043760090686111676232551071304068209138770860288559712668305422312696654237279493482639947183496116491452716230524062008359619552313157369262942115943406950151125924498134690930872975554288740156209836634830858363222644148322827613098464234367023244389857913053931768446619384085708247171083045853578553322991541370721199207671465326571513568560194626405522603466019302234784666560052325367923014709886269941434411922165168882541445215541505343467480203697200348016325510661623022905848475076269607422940821787374545874984284924098674136271787854328581672677694805579110986516573014570663354130477525242176741967821478622444915821364480380488829725717726042962611278634589989300645591335194574980640565955671354619845779507511252586761503082289113461528619179379331426801239590878110515368678972499875310131222407640102613492399118525027778162302580746558675783235445282050197812093772244380409800868509329204592891695691886053202967753600619107166618949686928712841408575767724722672002017116262766042573529343247504785019605451733712066679453818410708050115268640798036159952639877238978352684843859769074146693236805893735419498082486123203369072960628282462313001475812156171957448921407
 . . . . . . . . . . . . . . . . . . . . [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)
							5ce6d1754bd71c74793d372a5a39d37a06afaedd
 . . . . . . . . . . . . . . . . [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 (100 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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.uvt.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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