academy.vnnic.vn

Issued by R3

About this certificate

This digital certificate with serial number 04:00:af:01:26:1b:f1:ce:bb:66:db:b6:02:94:0d:7c:94:19 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=academy.vnnic.vn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:00:af:01:26:1b:f1:ce:bb:66:db:b6:02:94:0d:7c:94:19
Serial Number (int): 348681764591545766536795722812886936753177
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 0f:85:35:6b:54:90:0b:47:25:ed:7a:4e:5a:e0:c3:91:66:5a:7e:51
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 9d:27:b3:38:da:2f:0e:bd:9b:38:8e:4b:cc:08:ec:dd:0f:e6:da:dd
Fingerprint (sha256): 9f:8d:cf:16:f2:01:68:aa:3b:9c:fb:17:0f:a4:8c:c6:5f:5f:f9:58:3c:94:ce:ee:59:e7:89:55:b1:4d:d8:b1

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

Revocation information

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

Check the revocation status for certificate academy.vnnic.vn

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for academy.vnnic.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

academy.vnnic.vn

Other certificates including the domain name vnnic.vn

(limited to 100 certificates)
helpdesk.vnnic.vn
helpdesk.vnnic.vn
www.vnnic.vn
*.vnnic.vn
www.vnnic.vn
www.vnnic.vn
sc.vnnic.vn
www.vnnic.vn
www.vnnic.vn
www.vnnic.vn
academy.vnnic.vn
*.vnnic.vn
www.vnnic.vn
*.vnnic.vn
academy.vnnic.vn
*.vnnic.vn
www.vnnic.vn
www.vnnic.vn
www.vnnic.vn
helpdesk.vnnic.vn
*.vnnic.vn
www.vnnic.vn
www.vnnic.vn
*.vnnic.vn
*.vnnic.vn
www.vnnic.vn

Certificate

The complete raw certificate details for academy.vnnic.vn in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArrh22BZOq0gNhkgg6vmq
53eHhD+h7S1W9RJJdAKpuBl9Bz7hPugAM2SqTVtd3ShB4J8nDi7jaF2hZbP4EhwM
Dxm6reFb1QW5k54p5N/R0GyxFFzRdtYKS/SXDHeFp84HyZ/8R5QGA2PbXjionV/7
fJK7oyUewb9QD/p5GdYaKv3d0C8he0f3EMCKA7WbuYdyYsduppTIkL8FFg/InhQT
3jg9fvJ5I6BjW48yaBNfTsCDggi4d4pmLSA/wZ2GEeMNgOl+daqjQ8jT92SRX2yM
UD0Jl9rW0CCZVwhPXVnATN2kW/6DFmS9ENSTTRJB67U/rQ54jQtxlDO68dMGxK7E
KQIDAQAB
-----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 348681764591545766536795722812886936753177
 . . . . . . . . [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 2023-08-03 18:02:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-01 18:02:33 +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 'academy.vnnic.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 22056427768465024443793949428564214918855833712982416795190430742187041927669159855636766114635962780885314979537710560752834914262625230454878004092851555885219956260376857910997211911850344623683581440139197149490151490066358557003106369082205578875175785605694237225225049521866844394459040425308180809376913771919064654398489569366902296849664551180081898911573359148680740516845125820891807253848211000249766574304431388379548912904890508242678927462417967577864304740855017659854208567992755069549634168950902716487631282320322916504299390388994750189394292806188991147297408560440082394367384095971041768031273
 . . . . . . . . . . . . . . . . . . . . [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)
							0f85356b54900b4725ed7a4e5ae0c391665a7e51
 . . . . . . . . . . . . . . . . [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 (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'academy.vnnic.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000189bcc7c180000004030046304402203ba185f09d81d821f92e0d1de91b39510bee4cd701c5f637c3fd55ee232d397502203253e98ddfd37589c907b41060d39369ddf782d5032859754376be534fe982bc007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e00000189bcc7c1870000040300473045022100fd8894ae89985e21ab4e9e14337a52b69c222685b88d291af4559d768578690e022076902f11718228d7f9cec951b651d2eecdc3532550b51cf9ac98172258d50a23
 . . . . [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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