pm.ou.edu.vn

Issued by R3

About this certificate

This digital certificate with serial number 04:fc:93:06:44:70:01:2e:a2:5a:0c:05:3d:b6:eb:c6:71:fa was issued on by Let's Encrypt.

With 4 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=pm.ou.edu.vn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:fc:93:06:44:70:01:2e:a2:5a:0c:05:3d:b6:eb:c6:71:fa
Serial Number (int): 434395729248356786333741791518551766888954
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: a7:ec:5b:c9:9d:9a:98:35:70:cb:40:7e:65:31:67:e5:b8:27:7a:0f
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 45:f5:14:b3:d1:ec:9b:7b:66:ce:b8:19:83:c1:6f:84:9f:bc:09:64
Fingerprint (sha256): 2f:4b:64:7a:d6:36:5a:95:33:60:56:5a:38:75:2c:ca:70:fd:83:42:2c:c7:87:90:6c:59:3c:1c:bf:6b:01:38

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate pm.ou.edu.vn

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for pm.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

api.ou.edu.vn
gsqa.ou.edu.vn
hotro.ou.edu.vn
pm.ou.edu.vn

Other certificates including the domain name ou.edu.vn

(limited to 100 certificates)
3b2.ou.edu.vn
kqtkden.ou.edu.vn
support.alephys.com
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
kqtkden.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
help.epic36.com
support.epigrid.com
id.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
elosupport.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
thi.ou.edu.vn
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
id.ou.edu.vn
support.vicoimaging.com
devlms.ou.edu.vn
devlms.ou.edu.vn
devlms.ou.edu.vn
id.ou.edu.vn
kqtkden.ou.edu.vn
id.ou.edu.vn
kqtkden.ou.edu.vn
id.ou.edu.vn
lms.ou.edu.vn
help.webspecia.in
pm.ou.edu.vn
devlms.ou.edu.vn
id.ou.edu.vn
help.webspecia.in
id.ou.edu.vn
dichvu.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
support.epigrid.com
pm.ou.edu.vn
support.namastepay.com
id.ou.edu.vn
id.ou.edu.vn
id.ou.edu.vn
devlms.ou.edu.vn
support.okra.ng
tienichsv.ou.edu.vn
id.ou.edu.vn
lms.ou.edu.vn
www.patolo.jp
id.ou.edu.vn
kqtkden.ou.edu.vn
id.ou.edu.vn
support.namastepay.com
id.ou.edu.vn
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
id.ou.edu.vn
elosupport.ou.edu.vn
devlms.ou.edu.vn
kqtkden.ou.edu.vn
kqtkden.ou.edu.vn
id.ou.edu.vn
support.epigrid.com

Certificate

The complete raw certificate details for pm.ou.edu.vn in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuuwm/IqZgbg5ZgxiQSr8
wIHYh6ERZi2lorTfcH8QP1896ER/JBLwgfz/pH3ZsJtwu21ymEuR6fbKEE6dTN4S
AkJgDPg9XUbTSxCIcusR9B5S625ZyNs8xnzQ0XfJossxn0iZ24VzNqrUFzLJcEhF
tt3OpBwkGGqlfBsaw0zYg2FyiLhHtjtBwK+nWMXbPhWlEmtpEeXuT76N6veo5jGW
NRYL+jbE3j7yq2Lc4s8BVUV5+mIte8OxshRs1zvQ+NOb5qoLdiZmr+RcmDLpeP9u
dH/uoZmiPkMcjdY4WcF8vvwMmK8lztnCQyVAOkewjxxsnaI7B9Mi0YrGiMdbJXfU
RQIDAQAB
-----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 434395729248356786333741791518551766888954
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-02 11:01:28 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-01 11:01:27 +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 'pm.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 23596775758556688734556608788246208660557767900766262696627566537192978332491655719571746759340420204990440000154229055745681783891832013155699342042309818539046065978300035505719453426356193543853359999915396306593315137225176081382637198617762792858560896094878819778921099602599946600436965521533053908150415798541943471272869138706765015220941671383242453362498386083426172610230175609201733456047826570738156339469452699667069733363460567669053464410035752347604168471394308545474623820155492479188761534948021740323124446728736641674615036559179832769922863386307253452800571652245566727595404125744677298623557
 . . . . . . . . . . . . . . . . . . . . [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)
							a7ec5bc99d9a983570cb407e653167e5b8277a0f
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (64 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'api.ou.edu.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'gsqa.ou.edu.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hotro.ou.edu.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'pm.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 (12 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 1.3.6.1.4.1.11129.2.4.3 (CT Precertificate Poison)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [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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