id.ou.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:43:e9:b8:5d:d5:12:65:3a:27:18:53:d2:bb:fc:7d:a9:35 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): 03:43:e9:b8:5d:d5:12:65:3a:27:18:53:d2:bb:fc:7d:a9:35Serial Number (int): 284446443787768857660034684486898184726837
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 01:1d:08:33:33:24:0f:d2:5e:74:75:99:6f:70:3c:ea:24:72:1d:23
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 4f:8a:5f:b3:51:79:64:8d:aa:9e:95:20:ee:b5:b6:44:4d:90:e9:4e
Fingerprint (sha256): 64:50:1d:1a:b7:6f:45:21:1f:67:4c:39:dd:71:4a:c0:9a:c4:c6:2d:55:4a:2d:d6:ac:91:e2:c0:6f:e4:4f:8a
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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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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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
www.patolo.jp
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----- MIIFUDCCBDigAwIBAgISA0PpuF3VEmU6JxhT0rv8fak1MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMjcwNTA2MzdaFw0y MDA0MjYwNTA2MzdaMBcxFTATBgNVBAMTDGlkLm91LmVkdS52bjCCASIwDQYJKoZI hvcNAQEBBQADggEPADCCAQoCggEBALxNaoFqcKSnZ6k/Q0d4XuOg39GQZ218vVYy Y/uCqsHOvpK8DAh7CaSCDsFUUuVe2D4ycgmR0IhqtotVv9e0ATmvZQlpUccCwIDD e3tUWXZ+fgOQYUkVfX45v7h6m57Gm1hki2REa72bnMkN6+bJOf2oDyDhcdSXqyNf xlvFMhIycUk3Qu658nfWNAS6QpilMNp8mV41GQqCOaEiI/OI5eriUc+PLDKJB4l0 0KmGtE/EBYgItsKRWJaKrN1Js49Ftpyx9kZzTGlwp9jHHTKyw2clHc0xOjS4vsuH k6mDj73HZr4EvuB2ksNZv2O0Ov1BaEO51neFPyAXMR0hTECWUEECAwEAAaOCAmEw ggJdMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUH AwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUAR0IMzMkD9JedHWZb3A86iRyHSMw HwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUHAQEEYzBh MC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5cHQub3Jn MC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5cHQub3Jn LzAXBgNVHREEEDAOggxpZC5vdS5lZHUudm4wTAYDVR0gBEUwQzAIBgZngQwBAgEw NwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5j cnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHyAPAAdgDwlaRZ8gDRgkAQLS+T iI6tS/4dR+OZ4dA0prCoqo6ycwAAAW/lm+bnAAAEAwBHMEUCIDelYd1UPQYKD4ut /wQS3N8MJ47smKGKw4qSuobMcw+lAiEAzkZZ3qfG0NS4nbz2tc2UO2Mb5FfqOrH4 /3v8jmZnbA8AdgAHt1wb5X1o//Gwxh0jFce65ld8V5S3au68YToaadOiHAAAAW/l m+cZAAAEAwBHMEUCIQCQgF2GNOjka525/uKCS30vlRsE59EX7kvYgvwKXO+GkAIg T4XvZGKVsQebPNL2COW2erqPUx1Guo4U1B04LvSwrv8wDQYJKoZIhvcNAQELBQAD ggEBAHI71PUHQzfP3B9DM78OsDT6n1fov4chEHEd2SFCSaGEfL8jl2EbaFUsixhN Pz2sXm1zuOANHufYX/OnX+oebDRRJBj8SL69lZfUUAVRUDQrYr1UrGDZ+ADW8dEX IJnGw9jdMvMyJWzzwZiItZjhoatc2l+S1eNdgjTAxYOo1v/14Y9mm8HXHiE/yx8q /xHOSfxm9L/fzkS5JyUSuUyr4ecGgrOWYnG7aY2Uh0J9BveWO8ntFzk+pjxkjfzr bDO90IekibZCyFfLRbm9weBlOF2xwistnHh+NiFyayDClBX5Bcu4Y0Vg/s7V3wa0 R9rcVkd47l0OdXXPl7X6w0kbLBI= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvE1qgWpwpKdnqT9DR3he 46Df0ZBnbXy9VjJj+4Kqwc6+krwMCHsJpIIOwVRS5V7YPjJyCZHQiGq2i1W/17QB Oa9lCWlRxwLAgMN7e1RZdn5+A5BhSRV9fjm/uHqbnsabWGSLZERrvZucyQ3r5sk5 /agPIOFx1JerI1/GW8UyEjJxSTdC7rnyd9Y0BLpCmKUw2nyZXjUZCoI5oSIj84jl 6uJRz48sMokHiXTQqYa0T8QFiAi2wpFYloqs3Umzj0W2nLH2RnNMaXCn2McdMrLD ZyUdzTE6NLi+y4eTqYOPvcdmvgS+4HaSw1m/Y7Q6/UFoQ7nWd4U/IBcxHSFMQJZQ QQIDAQAB -----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 284446443787768857660034684486898184726837 . . . . . . . . [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 2020-01-27 05:06:37 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-26 05:06:37 +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 '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 23770976604388027508474792441345177223020482523401129926606089054215761529543529862875611330708852012075416210887550587700598625897377700941376491492046753060058793353794926047877502928747971460639541163068494626611928670129326737246882273608096563987936022383376522988845840916087293906235614042905858842950799614882957842339833340936768108114183131528104617877082047242525806335586947302887192597132066860910004392607802211704840388143332135369019735215411678599968279954553126548061688773487661660916390328612319962740921909458935656826794554420616093581655626596630372736024272794968852583446649156114687863443521 . . . . . . . . . . . . . . . . . . . . [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) 011d083333240fd25e7475996f703cea24721d23 . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016fe59be6e70000040300473045022037a561dd543d060a0f8badff0412dcdf0c278eec98a18ac38a92ba86cc730fa5022100ce4659dea7c6d0d4b89dbcf6b5cd943b631be457ea3ab1f8ff7bfc8e66676c0f00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016fe59be719000004030047304502210090805d8634e8e46b9db9fee2824b7d2f951b04e7d117ee4bd882fc0a5cef869002204f85ef646295b1079b3cd2f608e5b67aba8f531d46ba8e14d41d382ef4b0aeff . . . . [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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