mail.uvt.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:12:e2:33:24:b2:ee:9d:a9:a6:42:93:8e:a1:c2:00:a5:ca 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): 04:12:e2:33:24:b2:ee:9d:a9:a6:42:93:8e:a1:c2:00:a5:caSerial Number (int): 354874897410148261886158895827786722747850
Serial Number lenght: 139 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): 35:42:48:61:61:6b:50:a0:67:01:93:5a:c3:1b:2d:7e:0e:b7:a4:64
Fingerprint (sha256): 95:7a:fc:96:df:a2:fa:32:15:3b:ec:f6:4e:13:88:f5:f0:22:32:0a:14:8c:4f:75:9e:ee:71:7f:c7:7a:7a:6b
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck 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
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
mail.uvt.cz
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Certificate
The complete raw certificate details for mail.uvt.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGTTCCBTWgAwIBAgISBBLiMySy7p2ppkKTjqHCAKXKMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAyMjYxODAwMjlaFw0x OTA1MjcxODAwMjlaMBYxFDASBgNVBAMTC21haWwudXZ0LmN6MIICIjANBgkqhkiG 9w0BAQEFAAOCAg8AMIICCgKCAgEAseepmJac58GMM2nrUbK5ESnU1UQ1unNz302T PICRiqb1rrS8mCm53AQSdFvTBpW/7iwItNr9I9tc20ZX0mgVFcmSuSa+v4+pIOT9 YOoMu/DDubes6bW6K663rKHdr7LZiQnXssUZdITKqv89KQUAoM5b92UnQoPHmjh7 1engcMPXDn9b0kOB/qaaG+nXFuUWl7NyoidmZFmcDvBAQmX5qot+meNC3oNTwVmF QdUv1AR8a0duLaZAezxbxHi9AJ7qP3K0z+lDBtF6gokO1AC/VkKaYabnIgWMcPT0 +zk+tzB9PJBoU8yabbGkHsJMvVky5FC6vlTZqQKbr+/9M0Wsffl1yAF4bIdRqEK+ PkX1y3yHrOvE30YR0SC0Ks2bGUb+kiLKwC5juDDpJ32xVrCwPYDaSCSy0T+qjStZ +CAXyLrJsY01onWLSGroULEXaqXvHCnTUVWxJV+53tBUnWfSlT2IDy1cp/tpEtFs O5MUWKt17EsVWGO4BNeVnycuG1u6GQAPvdR7vm+UNwwT+R5mAs6NWgYtuaSzryOT kyGeVvAa9uigyC9VsrxnMfdOWX7XIZ6GZEho7rtC7CBWlclOd2VHOQ7rOJUP5X9+ GVEP4kJFVLPYf3gF2J6YekwcKO/ApnV1oc4rmYUmPTNzVcZlDE6fn4ViCjx8Hh1V 9Syu0T8CAwEAAaOCAl8wggJbMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggr BgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUXObRdUvX HHR5PTcqWjnTegavrt0wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEw bwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMu bGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMu bGV0c2VuY3J5cHQub3JnLzAWBgNVHREEDzANggttYWlsLnV2dC5jejBMBgNVHSAE RTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRw Oi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQEgfEA7wB1 AHR+2oMxrTMQkSGcziVPQnDCv/1eQiAIxjc1eeYQe8xWAAABaSsuA9QAAAQDAEYw RAIgGhX9ridWPc9BMwmJE+yrYLUF/6yIOJCeR0/ETEzagRsCIA2g9pM3u5dl4zZe BqU2j8iXw2JyMsh5TCXQVdFph7lAAHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctyk wwz05UVH9HgAAAFpKy4D5QAABAMARzBFAiBENJtgGQHDpYZ5G1LVgyYbXuV3sr5r 2rigLcHy2pRqqQIhAMVI95vwKnkzRX8Qvul51sbINCquoVa1IvNHdju3X5DJMA0G CSqGSIb3DQEBCwUAA4IBAQAF6XKmcT0LMJm14yugriNAo5c7DJyhU/UGC2+k6E+D s0s3H7XaYtQ43rtb4oHFc6JxavhNXZqg1ixTSkW9O2KEBXPrTx6Fy1P5tChiPrTj S379NXY6zt0Coy6GTvDHfHA+eRK8fixktgGLUx9/4IyvB30DvyJhjnYTq3INpjIL d3e+gH507V94NHeDEaSmiiYpt0+5XDm8y6Dl5FG1p/QJ4OerkJiluTldcJguEe0U sQKaeGkmTrm8vry4c91795yLBKtinze1aHZ2v9H0YlWvcQqvBiGej3qKgnRZE8t0 NO1hf/cJMnqSaQEkGYtbpHNNLhZvi83lWHM/+a98OUo0 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAseepmJac58GMM2nrUbK5 ESnU1UQ1unNz302TPICRiqb1rrS8mCm53AQSdFvTBpW/7iwItNr9I9tc20ZX0mgV FcmSuSa+v4+pIOT9YOoMu/DDubes6bW6K663rKHdr7LZiQnXssUZdITKqv89KQUA oM5b92UnQoPHmjh71engcMPXDn9b0kOB/qaaG+nXFuUWl7NyoidmZFmcDvBAQmX5 qot+meNC3oNTwVmFQdUv1AR8a0duLaZAezxbxHi9AJ7qP3K0z+lDBtF6gokO1AC/ VkKaYabnIgWMcPT0+zk+tzB9PJBoU8yabbGkHsJMvVky5FC6vlTZqQKbr+/9M0Ws ffl1yAF4bIdRqEK+PkX1y3yHrOvE30YR0SC0Ks2bGUb+kiLKwC5juDDpJ32xVrCw PYDaSCSy0T+qjStZ+CAXyLrJsY01onWLSGroULEXaqXvHCnTUVWxJV+53tBUnWfS lT2IDy1cp/tpEtFsO5MUWKt17EsVWGO4BNeVnycuG1u6GQAPvdR7vm+UNwwT+R5m As6NWgYtuaSzryOTkyGeVvAa9uigyC9VsrxnMfdOWX7XIZ6GZEho7rtC7CBWlclO d2VHOQ7rOJUP5X9+GVEP4kJFVLPYf3gF2J6YekwcKO/ApnV1oc4rmYUmPTNzVcZl DE6fn4ViCjx8Hh1V9Syu0T8CAwEAAQ== -----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 354874897410148261886158895827786722747850 . . . . . . . . [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 2019-02-26 18:00:29 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-27 18:00:29 +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 (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 (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 (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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001692b2e03d4000004030046304402201a15fdae27563dcf4133098913ecab60b505ffac8838909e474fc44c4cda811b02200da0f69337bb9765e3365e06a5368fc897c3627232c8794c25d055d16987b940007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001692b2e03e50000040300473045022044349b601901c3a586791b52d583261b5ee577b2be6bdab8a02dc1f2da946aa9022100c548f79bf02a7933457f10bee979d6c6c8342aaea156b522f347763bb75f90c9 . . . . [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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