learnvietnamese.com.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:9a:8c:11:2a:89:0c:90:e8:d2:2a:b6:b4:c8:c6:4d:ee:54 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=learnvietnamese.com.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:9a:8c:11:2a:89:0c:90:e8:d2:2a:b6:b4:c8:c6:4d:ee:54Serial Number (int): 401038809284041343896857676392432191532628
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: aa:a9:5f:4b:ee:62:fd:b7:71:e6:cc:96:35:81:8f:ae:e5:12:14:64
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): cf:49:8c:ab:f2:de:0c:d8:87:82:3c:ee:b6:89:c7:f7:63:b1:c9:8b
Fingerprint (sha256): 53:75:4c:98:e0:af:b5:63:d9:b3:05:4f:e0:bb:68:5c:08:a1:a1:88:80:a4:78:4a:c7:71:98:a9:94:5b:62:eb
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate learnvietnamese.com.vn
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for learnvietnamese.com.vn
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
learnvietnamese.com.vn
www.learnvietnamese.com.vn
www.learnvietnamese.com.vn
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Certificate
The complete raw certificate details for learnvietnamese.com.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFfjCCBGagAwIBAgISBJqMESqJDJDo0iq2tMjGTe5UMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA3MjkxNjE0MzdaFw0x OTEwMjcxNjE0MzdaMCExHzAdBgNVBAMTFmxlYXJudmlldG5hbWVzZS5jb20udm4w ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDCfsPEVdIhU652R13pTju+ qkm0uTs8w2cw7rGq7ixwKoM9GWkvV8FgppCUCTv0ueNfIhvNrhapIFN6bnAObpam oZHrEiMweMZe3B14+GvA7m7Z7+PpnmNLE/muwMMuzxsDx2sGGq4a62DrQAJwVVUz cnDUx2BfKW63nsYgobYed4lfhYJy/0eeEb1x1P5kLDtEXd3CD5AplhCf8azn1tXW 3myRBI7W5aN6x39XThbGwvrTFkrXS0fENWruUl3I3DRKge++GFL+TXSO2mxZI3KZ px6y/4ywXhJzlHUCic8QJI0gOhyty2WMuU0/l/qlBupEKw3sEsRHBpOLsPfxIoj3 AgMBAAGjggKFMIICgTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFKqpX0vuYv23cebM ljWBj67lEhRkMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsG AQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNl bmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNl bmNyeXB0Lm9yZy8wPQYDVR0RBDYwNIIWbGVhcm52aWV0bmFtZXNlLmNvbS52boIa d3d3LmxlYXJudmlldG5hbWVzZS5jb20udm4wTAYDVR0gBEUwQzAIBgZngQwBAgEw NwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5j cnlwdC5vcmcwggECBgorBgEEAdZ5AgQCBIHzBIHwAO4AdQDiaUuuJujpQAnohhu2 O4PUPuf+dIj7pI8okwGd3fHb/gAAAWw+uhEfAAAEAwBGMEQCIAfUhOGoK888Fgyn D+963GiGbojTqTzo6uje1lKAHWG3AiAYytZBDzbvoaiyMCUHGHnIK5p/9eVd/URy WV2fW9uY0QB1ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABbD66 ERUAAAQDAEYwRAIgSqrUU+FvMchGtmJAM+kXVex/OdCrv0QTUqYUrvPYV+gCIEom fdBjCH5cYFCuU2ixBgz6hpQS5roS6fKGOkY29DviMA0GCSqGSIb3DQEBCwUAA4IB AQAG+nXdAQUI3aUAReRpdOHs5Jt0bpPU5bsxt/UwqZoIdUrrKrNxPid8K36fdlQt HFa9qVc+Vv6EvzyTFH9jP28cNsW/ScX49JaInYM3iy2G8FMXSmE3u7nMTH/oIfgO iasuZEjb7C6oNPlkzKnALSTlxuzhUOBZsoiK3oaD8XDC6NIhX0novwQTCRJChxwD hw4xQZNRn7Wb31Mk4pKtDUi46Y3gkxaiME1E1NizoAxQELDlUUAeesatxMlvOBw3 jnbEls4SpsEYjPm2kNazf+vLjoP32Z8rAzpSCupgeZDXvXHOPobTBIu9smzkDfXU P5mSJEVRA4qvf5p2ZYEhpFwh -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwn7DxFXSIVOudkdd6U47 vqpJtLk7PMNnMO6xqu4scCqDPRlpL1fBYKaQlAk79LnjXyIbza4WqSBTem5wDm6W pqGR6xIjMHjGXtwdePhrwO5u2e/j6Z5jSxP5rsDDLs8bA8drBhquGutg60ACcFVV M3Jw1MdgXylut57GIKG2HneJX4WCcv9HnhG9cdT+ZCw7RF3dwg+QKZYQn/Gs59bV 1t5skQSO1uWjesd/V04WxsL60xZK10tHxDVq7lJdyNw0SoHvvhhS/k10jtpsWSNy macesv+MsF4Sc5R1AonPECSNIDocrctljLlNP5f6pQbqRCsN7BLERwaTi7D38SKI 9wIDAQAB -----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 401038809284041343896857676392432191532628 . . . . . . . . [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 2019-07-29 16:14:37 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-27 16:14:37 +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 'learnvietnamese.com.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 (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 24552741173958701897910437065236381772350078268539879891165928040138431378178591826715706627439273325228820015410960700630709725724767732793104406910147030688951118532022341615565371436975391841403114399076959912157057502630287235353367343279739687844113287824831075452028510761981566182733131796610254358139872482653386398116051190793780027229193046846988924655174916218850769510627255829021169905180779337353993276254423904250656775642047188232186823564773876266536824003718012486122084382939348361296954058457359682903175889445815872739483941594577861325712189833556943838526673362046579219478903740653546112190711 . . . . . . . . . . . . . . . . . . . . [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) aaa95f4bee62fdb771e6cc9635818faee5121464 . . . . . . . . . . . . . . . . [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 (54 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'learnvietnamese.com.vn' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.learnvietnamese.com.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 (243 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes) 00ee007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c3eba111f0000040300463044022007d484e1a82bcf3c160ca70fef7adc68866e88d3a93ce8eae8ded652801d61b7022018cad6410f36efa1a8b23025071879c82b9a7ff5e55dfd4472595d9f5bdb98d1007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c3eba1115000004030046304402204aaad453e16f31c846b6624033e91755ec7f39d0abbf441352a614aef3d857e802204a267dd063087e5c6050ae5368b1060cfa869412e6ba12e9f2863a4636f43be2 . . . . [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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