zoa.ou.edu.vn

Issued by R3

About this certificate

This digital certificate with serial number 03:75:e0:f0:7a:79:3b:96:aa:fd:3c:36:ed:82:dc:1c:1f:95 was issued on by Let's Encrypt.

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=zoa.ou.edu.vn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:75:e0:f0:7a:79:3b:96:aa:fd:3c:36:ed:82:dc:1c:1f:95
Serial Number (int): 301448890431391430750903673056476635340693
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f9:7b:de:e5:fb:9e:2a:94:f9:36:1d:d5:67:ed:f8:ed:a1:c3:d0:81
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): cc:bd:9d:6a:c1:90:c4:91:4c:f6:dc:2d:82:72:10:a7:fb:c2:38:f2
Fingerprint (sha256): 83:0d:e8:85:cf:56:2d:cc:74:23:55:d0:87:2e:22:0f:65:96:8c:c2:b4:b3:a4:6f:a9:1a:6c:f4:f8:3d:0a:5b

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

Revocation information

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

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

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for zoa.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

zoa.ou.edu.vn

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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 zoa.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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0pb29Qz4xf5AaYz18zys
qR78T7TNgOG+1jO0PGdyb3WQgVVZuN1Cq6yZawDdInnp6DoHIMxayWLuiesZhKgO
xTQQCEk41ZlPJJpgMM31FyzhlI8QI47Z+pAs4Y/BIDBbZGfYG+e0EqfSxK5ZGR7p
z55IpKsXvRyJm32jdJ7OUXwifn8hpEfOehg3HyPZuwPtero7Y+0+B1/BsuxnDutO
uxyCe4vb1KVAU49PgMYtdrZVx6SVemCYVgTqtJUxMDnFKWjF9tXbi2JHjRFvIAYg
vjh4SEc11kzQryaUzCwPgo1lnx6aEif4V9PqcJS7S514giQXmSlNtYZHYpV85GyB
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 301448890431391430750903673056476635340693
 . . . . . . . . [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 2024-04-03 11:57:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-02 11:57:06 +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 'zoa.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 26584487499487116173592254365302571914506097850398633983933670357000035628780879575422242595048650437563206184093434292666492650095033576427869133687915990873458620529616830769065922185490696098497233537707392955983837148143221050353197954532614774168565208974379955800427430071833884971451265618196708897393446216936278741642594549128259647990177739462778519690478698653483722037049157470070764326722139929863876571969830589644534274242428285865758290171095310937224495813778760472559370780457048652468173416692253644310121465148528808670801195837636546782793130626314394211791808597337644977217840309094135920099757
 . . . . . . . . . . . . . . . . . . . . [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)
							f97bdee5fb9e2a94f9361dd567edf8eda1c3d081
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'zoa.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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