www.sydneygroup.duy6.name.vn

Issued by R3

About this certificate

This digital certificate with serial number 03:e4:62:0e:79:a2:90:bc:3a:a3:f7:4e:e0:41:48:c6:62:b9 was issued on by Let's Encrypt.

With 8 subject alternative names this certificate can be used to secure multiple fqdn's. 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:
  • 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=www.sydneygroup.duy6.name.vn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:e4:62:0e:79:a2:90:bc:3a:a3:f7:4e:e0:41:48:c6:62:b9
Serial Number (int): 339051576956048968618205682466650589651641
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: e4:fa:38:ca:98:a6:fa:83:0c:e0:b2:4c:9f:92:1c:b1:c2:80:fa:d0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 5e:3c:23:1f:b5:4c:c8:aa:60:14:94:a0:ee:03:75:4c:ff:ac:32:cf
Fingerprint (sha256): 02:32:c7:6f:f2:05:ff:7a:cd:d6:df:7f:ad:61:94:9b:ef:2b:83:21:08:e9:3f:f3:1f:c4:c8:0d:1c:4c:96:50

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

Revocation information

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

Check the revocation status for certificate www.sydneygroup.duy6.name.vn

8

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.sydneygroup.duy6.name.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

hvn.duy6.name.vn
masterisevietnam.duy6.name.vn
sydneygroup.duy6.name.vn
sydneygroup.edu.vn
www.hvn.duy6.name.vn
www.masterisevietnam.duy6.name.vn
www.sydneygroup.duy6.name.vn
www.sydneygroup.edu.vn

Other certificates including the domain name duy6.name.vn

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.sydneygroup.duy6.name.vn in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFuTCCBKGgAwIBAgISA+RiDnmikLw6o/dO4EFIxmK5MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yNDAxMjQxMzQ0MTdaFw0yNDA0MjMxMzQ0MTZaMCcxJTAjBgNVBAMT
HHd3dy5zeWRuZXlncm91cC5kdXk2Lm5hbWUudm4wggEiMA0GCSqGSIb3DQEBAQUA
A4IBDwAwggEKAoIBAQDEcX8UpwHpVmLJefzSr+f7a9gKm+VNChFUytPWwdyRqv7W
EotdN/x1xrabATaMBiKWYyRAfCEzqzuKPSPDLk5Ph90McmI5Bc8sBIIloUHoz36n
JveJggpWNiHQca6MlKl9HAmBIGGBH0/jznp8AO0YwAhcM3Jijhx7+tTchmub1ZjC
TVQrlhcRjshsIfJXkXhskryFrCUAzNxHXa5PH0Ywy9fQq2Y4zwGzoG6zIHX/Yt75
5kKrzTtNHP47+J+U3DhYzmG9o+toCSbxJ3eT2EPziMO0SE1qNyN/OCaEN55YUVLS
wFrJGwaU6JgSW+hQsY6/UTPmUzskQzl3hh5hW9p9AgMBAAGjggLSMIICzjAOBgNV
HQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1Ud
EwEB/wQCMAAwHQYDVR0OBBYEFOT6OMqYpvqDDOCyTJ+SHLHCgPrQMB8GA1UdIwQY
MBaAFBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEF
BQcwAYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8v
cjMuaS5sZW5jci5vcmcvMIHZBgNVHREEgdEwgc6CEGh2bi5kdXk2Lm5hbWUudm6C
HW1hc3RlcmlzZXZpZXRuYW0uZHV5Ni5uYW1lLnZughhzeWRuZXlncm91cC5kdXk2
Lm5hbWUudm6CEnN5ZG5leWdyb3VwLmVkdS52boIUd3d3Lmh2bi5kdXk2Lm5hbWUu
dm6CIXd3dy5tYXN0ZXJpc2V2aWV0bmFtLmR1eTYubmFtZS52boIcd3d3LnN5ZG5l
eWdyb3VwLmR1eTYubmFtZS52boIWd3d3LnN5ZG5leWdyb3VwLmVkdS52bjATBgNV
HSAEDDAKMAgGBmeBDAECATCCAQUGCisGAQQB1nkCBAIEgfYEgfMA8QB2AEiw42va
pkc0D+VqAvqdMOscUgHLVt0sgdm7v6s52IRzAAABjTvtzmgAAAQDAEcwRQIhAN0W
Wjqq+oukZEtMQ6Q65k3ZeO5HcmtyGLZ1w9uJ54t+AiAzBhP9hplbMyT2072q6hE0
H1zWzVu+jmvZ9i/0feGtNQB3ADtTd3U+LbmAToswWwb+QDtn2E/D9Me9AA0tcm/h
+tQXAAABjTvtzmgAAAQDAEgwRgIhAPKLsvhPYkkt2/p0PlCiVCZeB+kFThU4SKPM
VpC6CFS6AiEAyvYcHBWKe8KfrWDpB/zcrDKVaH4wYUqpSAcma1PszawwDQYJKoZI
hvcNAQELBQADggEBACHXfGkoDlh46TB2o0av7YqpPC1kL02RnV1rI/HF2TQeGrJE
h05+0VB1Z3kBUw9pWkuOsdeks7ufKbfxmTPLl6FVzUt5478vMFOFJMgxetSE29wB
snxkrWQQgVRiMQVH7Kurf3yRGM1rAUpOd920iuB0fQ4ucU3qM9GEGb/Dihr0F+Fr
bWURxaELfpZ6o7M5n6qjJVUfns/kLCs+FCa4K4ECm7zypVrhTVoHj99dyOPNse6S
1SFJZ77CTG6RpjTav48W1ilaUjTe9AHSDyiuC4OU1wfHiS9ZbEPabw9BAXBroysn
V5KOB0hs/o5a34ax89xzLwGF/c+PmRsoVI+wpMw=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxHF/FKcB6VZiyXn80q/n
+2vYCpvlTQoRVMrT1sHckar+1hKLXTf8dca2mwE2jAYilmMkQHwhM6s7ij0jwy5O
T4fdDHJiOQXPLASCJaFB6M9+pyb3iYIKVjYh0HGujJSpfRwJgSBhgR9P4856fADt
GMAIXDNyYo4ce/rU3IZrm9WYwk1UK5YXEY7IbCHyV5F4bJK8hawlAMzcR12uTx9G
MMvX0KtmOM8Bs6BusyB1/2Le+eZCq807TRz+O/iflNw4WM5hvaPraAkm8Sd3k9hD
84jDtEhNajcjfzgmhDeeWFFS0sBayRsGlOiYElvoULGOv1Ez5lM7JEM5d4YeYVva
fQIDAQAB
-----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 339051576956048968618205682466650589651641
 . . . . . . . . [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 2024-01-24 13:44:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-23 13:44:16 +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 'www.sydneygroup.duy6.name.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 24798674938491128328623457888008967166781628968836568451255803843170992873082968819680371083824944975051725458886533351021595665827836711739524090914806445386169698056948240972814008491072051630429963787588548077625234494213444586372574563561397720565653318464182559172964405020733463820333614403907345771560563856571735379228961387906411917052167276204242122768794418717443453931097358350689283695458278816336993086843396078982872004826893203056586345308208307454022857760854510756840769148286330263766913238728462337413935853414256891592903548589235840048384420764111627950046209790039840589102668102095489212340861
 . . . . . . . . . . . . . . . . . . . . [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)
							e4fa38ca98a6fa830ce0b24c9f921cb1c280fad0
 . . . . . . . . . . . . . . . . [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 (209 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hvn.duy6.name.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'masterisevietnam.duy6.name.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sydneygroup.duy6.name.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sydneygroup.edu.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.hvn.duy6.name.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.masterisevietnam.duy6.name.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.sydneygroup.duy6.name.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.sydneygroup.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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018d3bedce680000040300473045022100dd165a3aaafa8ba4644b4c43a43ae64dd978ee47726b7218b675c3db89e78b7e0220330613fd86995b3324f6d3bdaaea11341f5cd6cd5bbe8e6bd9f62ff47de1ad350077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d3bedce680000040300483046022100f28bb2f84f62492ddbfa743e50a254265e07e9054e153848a3cc5690ba0854ba022100caf61c1c158a7bc29fad60e907fcdcac3295687e30614aa94807266b53eccdac
 . . . . [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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