id.ou.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:53:c0:2a:8a:9e:39:1d:eb:d8:bc:d4:16:5f:f0:f6:11:8b 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=id.ou.edu.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:53:c0:2a:8a:9e:39:1d:eb:d8:bc:d4:16:5f:f0:f6:11:8bSerial Number (int): 376948012844645893163660715720314465948043
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 55:1f:80:4f:ae:df:b4:bf:d9:de:ee:6e:05:10:f0:b4:22:a3:2c:81
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): f5:61:1e:fd:28:ce:b0:55:a7:27:bc:7d:5f:d1:a8:92:4f:50:c4:76
Fingerprint (sha256): 90:9c:e9:53:31:7e:39:84:9e:23:28:26:c7:3c:1e:c0:c1:e5:fe:33:66:6b:f3:93:d9:19:40:98:60:52:75:24
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate id.ou.edu.vn
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for id.ou.edu.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
id.ou.edu.vn
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(limited to 100 certificates)
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id.ou.edu.vn
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support.okra.ng
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www.patolo.jp
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id.ou.edu.vn
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id.ou.edu.vn
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elosupport.ou.edu.vn
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pm.ou.edu.vn
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sg.support.te-cloud.advantest.com
journalofscience.ou.edu.vn
sg.support.te-cloud.advantest.com
id.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
kqtkd.ou.edu.vn
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help.webspecia.in
support.1rink.com
id.ou.edu.vn
support.sisoy.id
ceats.ou.edu.vn
kqtkden.ou.edu.vn
id.ou.edu.vn
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devlms.ou.edu.vn
kqtkden.ou.edu.vn
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Certificate
The complete raw certificate details for id.ou.edu.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFTzCCBDegAwIBAgISBFPAKoqeOR3r2LzUFl/w9hGLMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMTAwNTA3MDBaFw0y MDA1MTAwNTA3MDBaMBcxFTATBgNVBAMTDGlkLm91LmVkdS52bjCCASIwDQYJKoZI hvcNAQEBBQADggEPADCCAQoCggEBAJ99rdecpI2uLH7ioJWCp3bWX62cGLZFmXDH VSoZKgtm0ewntn/lBifTSDQ3FeM/E7Qy1mNSyfyffVUaZ+8hzqyTfg/9CuNJvm5Q rAVvk0AoAFI2zUQ0/x/LLW9uIn44/GuhXaR9LQZXNwTLxcGHNmTj+0UMy3R8oM/B f6OqNGfFxbC6tApw4D4qgC6dffdeWgvciLwcW+tP62hZjEl5sOwRCEEBDG4tGJCa bJxzdE9XRLfbGldsRkPFJfATHzoD0ov0K05mMGyFYiG4/HmHhEXLAg3t6j+QGji3 cY+v3n9tWv9UiXa8mp5aGlbS1xPu4pzbOrYjpaYamWqvqNCSNAUCAwEAAaOCAmAw ggJcMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUH AwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUVR+AT67ftL/Z3u5uBRDwtCKjLIEw HwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUHAQEEYzBh MC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5cHQub3Jn MC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5cHQub3Jn LzAXBgNVHREEEDAOggxpZC5vdS5lZHUudm4wTAYDVR0gBEUwQzAIBgZngQwBAgEw NwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5j cnlwdC5vcmcwggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8AdgBep3P531bA57U2SH3Q SeAyepGaDIShEhKEGHWWgXFFWAAAAXAttUqfAAAEAwBHMEUCIQCQpKmNzDqJM1fV 99PmFPvcpNWjwLzv9JAQc3ubprGqcwIgVvwCtTyF3RM4lMGKCQoG3duyhWxg6DeW 5dWYAH2qXnUAdQCyHgXMi6LNiiBOh2b5K7mKJSBna9r6cOeySVMt74uQXgAAAXAt tUqNAAAEAwBGMEQCICYM2rfc0hGjuX6scWtbLOC75ByIEuqdEBLbugODDw9VAiAk fbNBi2hDK+yioSJoTiLOONHvBQIQu8OEwjKva2zYNTANBgkqhkiG9w0BAQsFAAOC AQEAVpfxitCQHtgj7vK8QSw4E0aiiOqvg48XK8y8Dwxvkz/Pg5FyCZQsFiGsRtqz txi5y6GXipltsA76oUec1f02GgMgMT4wi7euRUNkwS4uSzcRXuwppBEgKuxJY4pi Xn553TvdV4iGXLQpyY5MWIAXYHbb777CzvnVjVnx0EsmtDnlhJHzFwM5LlUfHGAm hOq9JPYHZuQKHBj7q504tZtmaqD5phhKByCg5b+ci5EDz4pw9uVlGhfK3iRXB3A1 57GGp/TwVh08lZMsToEGpzlt/hAcBrZV2clylVhWZ8MU129weyVAamdm60t0l8yQ f8GmDG/Yy5KHC47rUUq9Hqrl9w== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAn32t15ykja4sfuKglYKn dtZfrZwYtkWZcMdVKhkqC2bR7Ce2f+UGJ9NINDcV4z8TtDLWY1LJ/J99VRpn7yHO rJN+D/0K40m+blCsBW+TQCgAUjbNRDT/H8stb24ifjj8a6FdpH0tBlc3BMvFwYc2 ZOP7RQzLdHygz8F/o6o0Z8XFsLq0CnDgPiqALp19915aC9yIvBxb60/raFmMSXmw 7BEIQQEMbi0YkJpsnHN0T1dEt9saV2xGQ8Ul8BMfOgPSi/QrTmYwbIViIbj8eYeE RcsCDe3qP5AaOLdxj6/ef21a/1SJdryanloaVtLXE+7inNs6tiOlphqZaq+o0JI0 BQIDAQAB -----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 376948012844645893163660715720314465948043 . . . . . . . . [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 2020-02-10 05:07:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-10 05:07:00 +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 'id.ou.edu.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 20133865149452207302326245775434449791723990716301361137905856137553550119924609256502931903549479997795741246956331234633496265264052513493997251827732382854836563544165822992336088957094708650428740784971492666529058688969953195593244291548927112174216632440918676426269801061681587408565446628820230376294832648138374151083720988934693616234485801993978897128615983755440424931976087214164398420052842214519561500014519514873013066904955593015746542801471502801079273981030305903041307716968670403414598266380698524169434274900135832239627542924310532252130116117816158307833059240607998420259349312410024345220101 . . . . . . . . . . . . . . . . . . . . [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) 551f804faedfb4bfd9deee6e0510f0b422a32c81 . . . . . . . . . . . . . . . . [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 (16 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'id.ou.edu.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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0076005ea773f9df56c0e7b536487dd049e0327a919a0c84a112128418759681714558000001702db54a9f000004030047304502210090a4a98dcc3a893357d5f7d3e614fbdca4d5a3c0bceff49010737b9ba6b1aa73022056fc02b53c85dd133894c18a090a06dddbb2856c60e83796e5d598007daa5e75007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001702db54a8d00000403004630440220260cdab7dcd211a3b97eac716b5b2ce0bbe41c8812ea9d1012dbba03830f0f550220247db3418b68432beca2a122684e22ce38d1ef050210bbc384c232af6b6cd835 . . . . [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) 005697f18ad0901ed823eef2bc412c381346a288eaaf838f172bccbc0f0c6f933fcf83917209942c1621ac46dab3b718b9cba1978a996db00efaa1479cd5fd361a0320313e308bb7ae454364c12e2e4b37115eec29a411202aec49638a625e7e79dd3bdd5788865cb429c98e4c5880176076dbefbec2cef9d58d59f1d04b26b439e58491f31703392e551f1c602684eabd24f60766e40a1c18fbab9d38b59b666aa0f9a6184a0720a0e5bf9c8b9103cf8a70f6e5651a17cade2457077035e7b186a7f4f0561d3c95932c4e8106a7396dfe101c06b655d9c97295585667c314d76f707b25406a6766eb4b7497cc907fc1a60c6fd8cb92870b8eeb514abd1eaae5f7