learnvietnamese.com.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:a5:cf:10:72:6c:df:c2:b9:bb:52:54:49:b6:4b:4a:e4:8a 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:a5:cf:10:72:6c:df:c2:b9:bb:52:54:49:b6:4b:4a:e4:8aSerial Number (int): 404870969861693634134608967684591115232394
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: d1:b7:23:02:67:aa:a8:8c:db:3b:53:5a:f8:cd:81:55:a1:b9:6d:f8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): dd:4c:71:80:1f:f0:87:0d:80:16:a5:1c:50:50:5a:e1:49:60:38:d2
Fingerprint (sha256): dc:26:21:1a:50:96:d5:38:42:69:04:18:ff:ce:da:96:bb:14:ee:b5:54:29:f7:23:92:a8:3c:e8:dc:0a:68:98
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----- MIIFgTCCBGmgAwIBAgISBKXPEHJs38K5u1JUSbZLSuSKMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MTQwNjIzNDFaFw0x OTExMTIwNjIzNDFaMCExHzAdBgNVBAMTFmxlYXJudmlldG5hbWVzZS5jb20udm4w ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC9vBOktYkwyCS+0dv5+ALT BdVqxVL6k3WQeKOgIBqKJWr0/zRHpNeFhz1+/zHE3oh0/j5JjlKhPQWLbRe5FbmR ke3Op7cLJDvAFM32XIRFTiotmJFvpTcGAQHFNjecqDVlKmCHvIfuRq17TyklC12p NnLokPzykmQaMLVOOQSSpo07aapvtu73qZBoTFR7Jp1qO6DOducqQLQtKFRGrtIb BtqaQG0ZjoWIm6vWWLDVMsxlA3eMk0xJ1+fkuUZObX+RLL3+A1tBFjnZl2kFSMuk yIMLyEtalTV/J8hC1cPXLDUenfOSKLwWe7WJc0hf/ErKikjOPGOv9WActWzChpcL AgMBAAGjggKIMIIChDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFNG3IwJnqqiM2ztT WvjNgVWhuW34MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsG AQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNl bmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNl bmNyeXB0Lm9yZy8wPQYDVR0RBDYwNIIWbGVhcm52aWV0bmFtZXNlLmNvbS52boIa d3d3LmxlYXJudmlldG5hbWVzZS5jb20udm4wTAYDVR0gBEUwQzAIBgZngQwBAgEw NwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5j cnlwdC5vcmcwggEFBgorBgEEAdZ5AgQCBIH2BIHzAPEAdwBvU3asMfAxGdiZAKRR Ff93FRwR2QLBACkGjbIImjfZEwAAAWyPAs2jAAAEAwBIMEYCIQCxeJuwqmGJdY9j X4vC1CHe/5OuSqJG3U4cZXUaXb9B+gIhAOM6nY/+bhGcvp1EMB14TPDd9zdTNHVQ wJL0c1s0MqHnAHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFs jwLNbwAABAMARzBFAiEAs026mb4R05B6WaBd8L3bfFf0jTMxetey5a8GqkRJkTwC IH8oENEFmlix9zG8qdvKswcjw1nOk6JePOf/d+XGJBaMMA0GCSqGSIb3DQEBCwUA A4IBAQCbW9LvqjKcU34UDY9+kBE/S6hnPSg5VTreGiWgUrJNlHimQn1bB7VpbdRF B4TjEz2pv7mRvaRPk30PSgayw8ccAVk1DyC3XJ84+6MHBB+RYEmeujwwTzYd9w2f NfGfpC8NDPbPNi01X6Jr+M/nuecOccmGvWdvPVDCK3poeLaWB71QCZrq3A5DuJQg Qp+F7BHvhcZqL1SP6y5tlUn+NU4/hKDyiCTi9YImAuVejD+93OoblSol44S6zgqe lZSz/wbhEQ9JklMCsBQbSvNOdN3rxYTfii15PQgzxJkkHgBEDMM45spvpeTTLvSZ OdPIU4G2WWxJ49ym1gUvwiyU6YoQ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvbwTpLWJMMgkvtHb+fgC 0wXVasVS+pN1kHijoCAaiiVq9P80R6TXhYc9fv8xxN6IdP4+SY5SoT0Fi20XuRW5 kZHtzqe3CyQ7wBTN9lyERU4qLZiRb6U3BgEBxTY3nKg1ZSpgh7yH7kate08pJQtd qTZy6JD88pJkGjC1TjkEkqaNO2mqb7bu96mQaExUeyadajugznbnKkC0LShURq7S GwbamkBtGY6FiJur1liw1TLMZQN3jJNMSdfn5LlGTm1/kSy9/gNbQRY52ZdpBUjL pMiDC8hLWpU1fyfIQtXD1yw1Hp3zkii8Fnu1iXNIX/xKyopIzjxjr/VgHLVswoaX CwIDAQAB -----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 404870969861693634134608967684591115232394 . . . . . . . . [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 2019-08-14 06:23:41 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-12 06:23:41 +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 23951783731759782401845173273517558434280071636059228980864906369717894252735477115047125167910326537840891502016833483874451079974283438805712113527763786301781443069867085786819522492817605746815441667539196505722268777484077558077781215497663720437108709287059317039505766257839404516035193273109680627456087046164878444239276486824764744846617153955951756000132245260690079543054001512139665604867318431040966014091020971804865257450925738651780293043994563889000579602925459933942918891041971346977816037661124552835238112137163139989046546485122414179425281349929848115243839601245733800803638459218125006477067 . . . . . . . . . . . . . . . . . . . . [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) d1b7230267aaa88cdb3b535af8cd8155a1b96df8 . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f10077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016c8f02cda30000040300483046022100b1789bb0aa6189758f635f8bc2d421deff93ae4aa246dd4e1c65751a5dbf41fa022100e33a9d8ffe6e119cbe9d44301d784cf0ddf73753347550c092f4735b3432a1e7007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c8f02cd6f0000040300473045022100b34dba99be11d3907a59a05df0bddb7c57f48d33317ad7b2e5af06aa4449913c02207f2810d1059a58b1f731bca9dbcab30723c359ce93a25e3ce7ff77e5c624168c . . . . [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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