id.ou.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:a1:b4:f8:0a:f0:60:2a:f2:82:47:19:a7:80:01:e6:c1:af 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:a1:b4:f8:0a:f0:60:2a:f2:82:47:19:a7:80:01:e6:c1:afSerial Number (int): 316362867820282651572832878235254478258607
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 29:e3:5c:1f:af:c0:5d:40:4a:4f:d8:cc:ca:4f:20:13:d9:61:3e:9f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b3:fb:6e:3e:c1:bd:38:e5:07:99:8f:4f:73:2e:db:af:5a:9e:18:ae
Fingerprint (sha256): 74:8f:15:1c:b7:16:18:59:2e:d9:a4:85:df:67:e4:5b:56:1c:f8:8a:39:5a:36:a6:72:43:e4:53:f1:7f:5d:c9
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)
3b2.ou.edu.vn
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support.alephys.com
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help.webspecia.in
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support.okra.ng
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id.ou.edu.vn
journalofscience.ou.edu.vn
help.webspecia.in
id.ou.edu.vn
support.okra.ng
id.ou.edu.vn
www.patolo.jp
support.zea-iot.com
id.ou.edu.vn
kqtkden.ou.edu.vn
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id.ou.edu.vn
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id.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
elosupport.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
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devlms.ou.edu.vn
id.ou.edu.vn
kqtkden.ou.edu.vn
id.ou.edu.vn
kqtkden.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
pm.ou.edu.vn
id.ou.edu.vn
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
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lms.ou.edu.vn
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pm.ou.edu.vn
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support.zea-iot.com
zoa.ou.edu.vn
help.webspecia.in
devlms.ou.edu.vn
id.ou.edu.vn
support.alephys.com
support.okra.ng
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elosupport.ou.edu.vn
devlms.ou.edu.vn
kqtkden.ou.edu.vn
kqtkden.ou.edu.vn
id.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----- MIIFUDCCBDigAwIBAgISA6G0+ArwYCrygkcZp4AB5sGvMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MTUwNTA4NTFaFw0x OTExMTMwNTA4NTFaMBcxFTATBgNVBAMTDGlkLm91LmVkdS52bjCCASIwDQYJKoZI hvcNAQEBBQADggEPADCCAQoCggEBAIORnuuJUEGHBbNwlKeazLFVSY7kbDsWwrCd JtOgsDOz4VliiM12cEEIBmzP3XJexF2dVCaI42mvVBOveKylyS3UjsSCvWJ0R4gL VCNkTQNLNV+AsHxAFsRooqQemf+Z7NifA71mygllBObx+Hw0BGtT0A63NPa31yKO qSNEWNuAadGpXdmwZbouDpXOghTHPVCFS6iCCbP/LD7rKKValfYu/geG2Sx2FR2k AjcxXNHwkCXlsv7euFCLYfXjHxRB5ZjcsYH1I5BW7VBd5vmlB2I+w0f3hP4iyX7v UpHa6Wb3ZmTOzdfHdXzce9auRru7Ko6t7uK7IJumejXPI3681xECAwEAAaOCAmEw ggJdMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUH AwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUKeNcH6/AXUBKT9jMyk8gE9lhPp8w HwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUHAQEEYzBh MC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5cHQub3Jn MC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5cHQub3Jn LzAXBgNVHREEEDAOggxpZC5vdS5lZHUudm4wTAYDVR0gBEUwQzAIBgZngQwBAgEw NwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5j cnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHyAPAAdgB0ftqDMa0zEJEhnM4l T0Jwwr/9XkIgCMY3NXnmEHvMVgAAAWyT5KfjAAAEAwBHMEUCIQD0MGaYqGUeW/89 JpSixpsHJQ/CmNKcqtJkFq88/NMp3gIgdPxfwX0bGZv9y7V4x1PvNhSeE/aj9+Gt ASe2PNKuscsAdgApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0eAAAAWyT 5Km4AAAEAwBHMEUCIQDy8lMN/rMxqm6rXoUmRiFc8NOgCt3jiYbzdRLwiyWtvgIg Bd1tNLNo/BIWaLjrm9i459eNPP1SMzEDKItfgO5coDIwDQYJKoZIhvcNAQELBQAD ggEBAAkDDLvwVGbjgfCGSsyKvjfFpxqXoUymz+uiHXGzCQQCXEMks8FHotSW2let 1Zsz0/4WE1qCCgwPo+KLgyn9nnrQ0yuzIxsFR2HH5cqZFAlBeDJhDE7dEpF689DH P2rfBAqW13Gxdv2Zi2qf9NLa+kQyORuNojpt6tQ9MPzRnlUgZ97rlI+7aK/Mvpdp LovT8P5s/CuG5FQbBqdEZ/eUlOdE/3e3cOGweJOOaKtc2SKaLXQPRBa0UMqcHqHj jIs38Uje74mtxfWlVLrwidGC9IOuxWjinZlLhtTfNnaUc9UtFiPm4vbOn6X5z2QZ v+2U24A1LKeaT6l79J5AHv+MvEg= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAg5Ge64lQQYcFs3CUp5rM sVVJjuRsOxbCsJ0m06CwM7PhWWKIzXZwQQgGbM/dcl7EXZ1UJojjaa9UE694rKXJ LdSOxIK9YnRHiAtUI2RNA0s1X4CwfEAWxGiipB6Z/5ns2J8DvWbKCWUE5vH4fDQE a1PQDrc09rfXIo6pI0RY24Bp0ald2bBlui4Olc6CFMc9UIVLqIIJs/8sPusopVqV 9i7+B4bZLHYVHaQCNzFc0fCQJeWy/t64UIth9eMfFEHlmNyxgfUjkFbtUF3m+aUH Yj7DR/eE/iLJfu9SkdrpZvdmZM7N18d1fNx71q5Gu7sqjq3u4rsgm6Z6Nc8jfrzX EQIDAQAB -----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 316362867820282651572832878235254478258607 . . . . . . . . [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 2019-08-15 05:08:51 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-13 05:08:51 +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 16609026234242690208399644732169986131594000995993763491661358341401684966550008420077391814635927580867638370508331438589672584194376003693862853722867137967900656134074239767241680089040050009494056569409040546427953086392422750731293841032666406739600051570151753441822223635773670035975908540105909383086852056058576668600304849970484309743757894919607669759609323662577635382864972914807644783830063287324856629019316232683890708620356355571708763619399600422515284227719746223261709478720868524185258850357300779021085269525991003080235369803554896347375586279503335432601808956293539180973253119393506623543057 . . . . . . . . . . . . . . . . . . . . [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) 29e35c1fafc05d404a4fd8ccca4f2013d9613e9f . . . . . . . . . . . . . . . . [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) 00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016c93e4a7e30000040300473045022100f4306698a8651e5bff3d2694a2c69b07250fc298d29caad26416af3cfcd329de022074fc5fc17d1b199bfdcbb578c753ef36149e13f6a3f7e1ad0127b63cd2aeb1cb007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c93e4a9b80000040300473045022100f2f2530dfeb331aa6eab5e852646215cf0d3a00adde38986f37512f08b25adbe022005dd6d34b368fc121668b8eb9bd8b8e7d78d3cfd52333103288b5f80ee5ca032 . . . . [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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