kosna.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:54:48:32:45:f5:d2:f8:88:3f:98:a2:e4:26:70:e5:34:f0 was issued on by Let's Encrypt.
With 2 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=kosna.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:54:48:32:45:f5:d2:f8:88:3f:98:a2:e4:26:70:e5:34:f0Serial Number (int): 290016542066141466332066420171278496642288
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 09:c5:18:30:2e:a3:53:76:45:65:4c:6c:0f:87:30:b5:a7:78:ae:67
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 8d:24:11:2f:ca:82:a8:68:f0:73:84:46:9e:1f:93:04:d4:bb:80:39
Fingerprint (sha256): 45:19:7d:13:8e:98:b7:d9:4a:00:e0:11:dc:bc:5e:9e:3c:65:b1:d9:61:b0:eb:98:59:df:f7:cc:71:f8:9d:7e
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate kosna.vn
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for kosna.vn
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
kosna.vn
www.kosna.vn
www.kosna.vn
Other certificates including the domain name kosna.vn
(limited to 100 certificates)
Certificate
The complete raw certificate details for kosna.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGVjCCBT6gAwIBAgISA1RIMkX10viIP5ii5CZw5TTwMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTExMjQxOTAxMDVaFw0y MDAyMjIxOTAxMDVaMBMxETAPBgNVBAMTCGtvc25hLnZuMIICIjANBgkqhkiG9w0B AQEFAAOCAg8AMIICCgKCAgEA2kTvSukyjg7vjm5607XyQCLtxHSCz293ESRPRdXH fB15tkNq4EzaPdZ9r17BxacAHJ9TKKBAhKs8m71xAkbznB4oLTE7bvQeI/cOS9pK 5XhNi41SsrKvj7XaLzxWGf7UvWMraJNbTMtHGPy7wK8uuo9MahA3xW5XYVRQuEWm fFKVlJZ9Bohj7u2NC/a6fiPo1egcq7V0eWahMIbAK4F3x9jJ+nGnezNYctMTH9Bt A33upguk8RmnNVeMMU6vGcQqK/bkMb0cQoBIz3XWPbHDPs5YbT+RQRQ2MBS+UUjV 1ydKyGgOh3juMGCecDtqmBSix2D5Gcd/Cf06Igq6szSjhGjH8NNgD7doXJmpni78 Bmqx/bydBLFHwMUfalEbU6xVUecjHj/PgjnqtJnEiWIrXMOR+Jy7v2Rls86XyRZF ggzss1nlAx8btT+5gsap+c4EZybSLuA+38ioUgWAqYYdGv2IJW1lj+/P7mjp47KV 7tWKlMLh37HWaADO6CaQBUnm5KzERUqODOa+i5qtkcRa1mpZ+ZmhPOrfnwASNGsN 51MS4FcxxQYxGq9FOa9aahLQgz3qbONRBD/ZSe7KZxc4TQtEQQU/FYkXbq4UUEi3 kSs1cvJGDv57mATz9KCWGrQxrn4dQwwPka9gqa/vhGsuKOXVv34+3FzUq52vzCxj 5pcCAwEAAaOCAmswggJnMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEF BQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUCcUYMC6jU3ZF ZUxsD4cwtad4rmcwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYI KwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0 c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0 c2VuY3J5cHQub3JnLzAhBgNVHREEGjAYgghrb3NuYS52boIMd3d3Lmtvc25hLnZu MEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUH AgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB 9QSB8gDwAHYAsh4FzIuizYogTodm+Su5iiUgZ2va+nDnsklTLe+LkF4AAAFunwDh RQAABAMARzBFAiAuuvg4vXQlrAdBtjxLwib9syj0yJ2hm7VKOiqSZA7ChQIhAOrH 8PCpcgsa3k3lJ+FREP/3cVzTGuBsSgdYa8GyX7sgAHYAb1N2rDHwMRnYmQCkURX/ dxUcEdkCwQApBo2yCJo32RMAAAFunwDirQAABAMARzBFAiAummJWmzD74uxyBGj7 VGF9OS0EQQ26PxMTl4F7DVs6aAIhAIvda1NPWFi9BKbBLkZIBG/x4svjNGboOI8X Wj7/XqrEMA0GCSqGSIb3DQEBCwUAA4IBAQAUDXnEpw/lYdvrV9LscA5rdwqLYbRK WD+Ml5Ruf+DLXXXUi0nAPQfMgSjT4qioFzbH3AQ9nYELVra6uJFGxvDeAS/d/IvZ r04XrLWAtkWv6u6OPEVU2NWbc/ANmwoxoAE5qtsOLq6Op16ZyKRb062L2ccN+Sjx LUe6yEQ6Azog/k6xT3U6vsZzMqNPSpXT8GLzAd0qGUUtW/b1yRmIpq/XG5IfZa/I hgAInERP1WmmX2QIwyqQZCtuv6RyLLLESA3G/LkOHwrOOZXNrxXtY8ldEPYNfvew zffDebOuPjohRhs9ZJMB6qkO6/ukTErPy0UDlU3bdn/bsg82RDoyZs4V -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2kTvSukyjg7vjm5607Xy QCLtxHSCz293ESRPRdXHfB15tkNq4EzaPdZ9r17BxacAHJ9TKKBAhKs8m71xAkbz nB4oLTE7bvQeI/cOS9pK5XhNi41SsrKvj7XaLzxWGf7UvWMraJNbTMtHGPy7wK8u uo9MahA3xW5XYVRQuEWmfFKVlJZ9Bohj7u2NC/a6fiPo1egcq7V0eWahMIbAK4F3 x9jJ+nGnezNYctMTH9BtA33upguk8RmnNVeMMU6vGcQqK/bkMb0cQoBIz3XWPbHD Ps5YbT+RQRQ2MBS+UUjV1ydKyGgOh3juMGCecDtqmBSix2D5Gcd/Cf06Igq6szSj hGjH8NNgD7doXJmpni78Bmqx/bydBLFHwMUfalEbU6xVUecjHj/PgjnqtJnEiWIr XMOR+Jy7v2Rls86XyRZFggzss1nlAx8btT+5gsap+c4EZybSLuA+38ioUgWAqYYd Gv2IJW1lj+/P7mjp47KV7tWKlMLh37HWaADO6CaQBUnm5KzERUqODOa+i5qtkcRa 1mpZ+ZmhPOrfnwASNGsN51MS4FcxxQYxGq9FOa9aahLQgz3qbONRBD/ZSe7KZxc4 TQtEQQU/FYkXbq4UUEi3kSs1cvJGDv57mATz9KCWGrQxrn4dQwwPka9gqa/vhGsu KOXVv34+3FzUq52vzCxj5pcCAwEAAQ== -----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 290016542066141466332066420171278496642288 . . . . . . . . [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 2019-11-24 19:01:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-22 19:01:05 +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 'kosna.vn' . . . . . . . . [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 890460958352086222834503751962507052269316004383304048217130044719860776466539084986727771080310260849927837642381603755787476503402102564337206615101664382237264693957913922131632904385353012981806211717409806025220961635583269506608864777963442726762900423397132617054925321971935979817493238720604679287379736078059822106751665362750810539097781513427656468236446683971305332661550411973117807183240735043772492258952243027964517208881486486901596143600881871223320745418370274376058522772805336883767395236020311432624664083518452411930280255956271437898840049883246827780465112941084628133844194870400414626388147899958886912594006281523767632250292210493396117441098968379205003638118181966894576572217990059076060891268943666557816400599468708660722437935622032043399357623847337385249192291363235177114760841976204988694257947913106987334631875348950663356498603253742547960796386304747444668821289897913721555996638478261404817775755344301761075694405250748508137272723388732169711861385144739253646226269601283596023449520783662234531742508650493776061771788447760946436436781898554621890495938818818681964522399245717995383687487746876976220255346571289176050496657604935992659489239739601957549010682895791662467234653847 . . . . . . . . . . . . . . . . . . . . [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) 09c518302ea3537645654c6c0f8730b5a778ae67 . . . . . . . . . . . . . . . . [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 (26 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kosna.vn' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kosna.vn' . . . . . . . . . . . . . . . . [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) 00f0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e9f00e145000004030047304502202ebaf838bd7425ac0741b63c4bc226fdb328f4c89da19bb54a3a2a92640ec285022100eac7f0f0a9720b1ade4de527e15110fff7715cd31ae06c4a07586bc1b25fbb200076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016e9f00e2ad000004030047304502202e9a62569b30fbe2ec720468fb54617d392d04410dba3f131397817b0d5b3a680221008bdd6b534f5858bd04a6c12e4648046ff1e2cbe33466e8388f175a3eff5eaac4 . . . . [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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