www.seduacademy.edu.vn.duy5.name.vn

Issued by R3

About this certificate

This digital certificate with serial number 04:7e:7f:25:71:a9:24:f0:21:25:69:77:fc:3a:46:8f:b5:99 was issued on by Let's Encrypt.

With 4 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.seduacademy.edu.vn.duy5.name.vn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:7e:7f:25:71:a9:24:f0:21:25:69:77:fc:3a:46:8f:b5:99
Serial Number (int): 391493728334840959523989767850026551195033
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: de:27:c0:d5:c5:22:ee:e4:80:30:d6:00:ee:35:03:e0:67:7d:b6:96
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 69:f9:b1:70:54:88:5c:ed:93:6d:52:2e:17:9b:a0:38:24:6f:82:30
Fingerprint (sha256): 35:27:9d:c0:5b:78:8a:d9:9d:38:d0:e6:d6:18:52:66:fb:68:74:f9:a4:85:0d:4b:16:62:e1:0a:ea:cc:a4:f9

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

Revocation information

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

Check the revocation status for certificate www.seduacademy.edu.vn.duy5.name.vn

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.seduacademy.edu.vn.duy5.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

seduacademy.edu.vn
seduacademy.edu.vn.duy5.name.vn
www.seduacademy.edu.vn
www.seduacademy.edu.vn.duy5.name.vn

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thienlongcnc.com.duy5.name.vn
ojidesign-vn.com.duy5.name.vn
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cpcalendars.amz.com.vn
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cpcontacts.phuonglammedia.vn
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vinhomeoceanpark.duy5.name.vn
www.hoathuyetduongnaonibifa.vn
www.nordvn.duy5.name.vn
www.lagianglogistics.com
trihemofa.vn
xaydungcic.vn.duy5.name.vn
hetianvietnam.duy5.name.vn
seduacademy.edu.vn.duy5.name.vn
hanwel-ind.com
www.gammavietnam.com.vn.duy5.name.vn
nhahanghoaphuong.com.duy5.name.vn
removacid.com.duy5.name.vn
qilila.com
www.ojidesign-vn.com.duy5.name.vn
bacsongcam.com.vn.duy5.name.vn
www.thienlongcnc.com.duy5.name.vn
bidvquavangnhuy.duy5.name.vn
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www.9t9perfume.com.duy5.name.vn
www.eduwinschool.edu.vn.duy5.name.vn

Certificate

The complete raw certificate details for www.seduacademy.edu.vn.duy5.name.vn in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzboImXiV5O7YkgfbwIo0
bxJzbC305/zLkgFirxZ9+EewvRqbzVVhM/eu868qwYBaNQKE9XHP8iSW5VztgJgl
cjo6TuY5u8QWqjE4GfChswZCPVNKqjjbsmH5T+NwQuUpj6s4ZUy1fIAMcUrMfJ5Y
BwtaE+Vduccy94AAI94WKIcn+XTPVgL4pI1yXks5z4U89ZSBSc/yjrbwk/1ehj/o
JPKeWyVfuAgQG7qgUSmMS9pYdL8ZNFFh1A9m+EPx8m/c8tCAbXVf84HZRC353wWZ
Qnz2IPMQg2He07qrUc97ae10PspwgrjydsGEUYM8js0ma51vmIPtce2uDL/fU38r
kwIDAQAB
-----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 391493728334840959523989767850026551195033
 . . . . . . . . [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 2023-11-28 11:07:23 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-26 11:07:22 +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.seduacademy.edu.vn.duy5.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 25970589101219090182965048443107422254960686229685559216938716819206605265554880657440252714495941425615224211827472977150588557257010700972137489198328248918589002147647079475394469805647507223672167782885590636414384896037671905288245592038702866913504188004800792014043771648807358251678585216150034460038466330211212617891839624835597327246183193764081812951809613443469158554057736548615554792104696992457035007113765013501798749487015624237584668976089087877725318933694265968088678183281642840172925476135805259881283014549049099782841644258496110371581724795055487322379003986533504848772714155313859162745747
 . . . . . . . . . . . . . . . . . . . . [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)
							de27c0d5c522eee48030d600ee3503e0677db696
 . . . . . . . . . . . . . . . . [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 (116 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'seduacademy.edu.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'seduacademy.edu.vn.duy5.name.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.seduacademy.edu.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.seduacademy.edu.vn.duy5.name.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c15d3af7d0000040300463044022028a8e284d80eecb534cc40ee24b67efb7cbc6c139f095eb2b9ec1bb9cc23488302206351663e95e4ce32e4b08b898d4799037ce540b90da47bdace2fdb56c8450ac700770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c15d3af820000040300483046022100f8d1a69f64a37cd4f86dde9b6a3e4731a4c08dd2d52c5b4de3cfe2b6380a1b3b022100fcb724b54b9d0ab465f558251487dd9447540a282fd46ed808baea2c6d4c9e93
 . . . . [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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