DV SSL/TLS Certificate for cpcontacts.dthtech.vn

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the cpcontacts.dthtech.vn DV SSL/TLS Certificate

This certificate with serial number 06:21:0d:06:46:a8:37:3a:a4:04:91:73:77:99:69:8e:07:63 for cpcontacts.dthtech.vn was issued on by Let's Encrypt.

With 8 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for cpcontacts.dthtech.vn provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:21:0d:06:46:a8:37:3a:a4:04:91:73:77:99:69:8e:07:63
Serial Number (int): 533920346249774900415151700773676172314467
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 8b:d3:b5:11:96:82:f1:2f:a5:05:be:b9:cc:57:c0:16:8e:e5:2a:85
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): 22:3c:0b:56:53:78:63:7a:08:1f:86:92:a2:71:0a:10:9c:57:b3:82
Fingerprint (SHA-256): b3:e6:3d:96:c6:24:f6:2c:8b:bc:96:90:c5:d0:ff:78:1d:df:60:36:7f:77:17:dc:92:42:82:38:32:eb:71:eb

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/100.crl

Check the revocation status for certificate cpcontacts.dthtech.vn
8
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for cpcontacts.dthtech.vn

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

autodiscover.dthtech.vn
cpanel.dthtech.vn
cpcalendars.dthtech.vn
cpcontacts.dthtech.vn
dthtech.vn
webdisk.dthtech.vn
webmail.dthtech.vn
www.dthtech.vn

X.509 Certificate

The complete raw X.509 certificate details for cpcontacts.dthtech.vn in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyFbNWFzmp8wHKae0/9zM
+ORoaEzatHm2k3J2Vs8O1vZjoLo+PzNSsy5iqSJT6Jm+qJc8inER+ILHIMpaukIz
Sjg35suzWM1r/+YgzQMmTIVrk4+CMn0RDXOmFgndEqwQCdhY0MDGOJGJ0J9w3EaO
wAV82Lo/ZUt+Kv9PgOQwGBeXSbzFGM8sYuv+mQm0tOudTTqpQpjxRuoSiLgczEeJ
a68BVtxRfhTK/TdQrDK3VzGhn5clTv/D2IDTeUpWlooLRa4uOA1t7ltfMA01hLC8
50+08rSz19j0W3KsWJ+lrPo3XD5YZf8neVbYXmcQxNIY7nHjPduGl+NiFrd2dYDN
gwIDAQAB
-----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 533920346249774900415151700773676172314467
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-22 12:44:06 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-20 12:44:05 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'cpcontacts.dthtech.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
 . . . . . . . . . . . . . . . . [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 25290464718614832357094411615388096485126493735302410585353140545435446555318700367977109627898635164784758587055006284234881892501083866781275541048171930627170182406104615614287537212995403436380714227894730223906944461347708597419365607458524570381689330468716927432253816459442623780310992381022892150129169207554431067653725114563629436305563329194002663880274954917044002138283695048174080088545884296022556020149913796774608891771026678997551517145276773039117976056866716182799572224922805007062116318390687238411078259811730523957688712070170957372747345154606120279207327163882715054451154631634461095153027
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							8bd3b5119682f12fa505beb9cc57c0168ee52a85
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (162 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.dthtech.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.dthtech.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpcalendars.dthtech.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpcontacts.dthtech.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'dthtech.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.dthtech.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.dthtech.vn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.dthtech.vn'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.c.lencr.org/100.crl'
 . . . . . . . . . . . . . . . . [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)
							00f0007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db00000019797e069700000040300473045022100f2045cde7e03fd1596d02df600eb86d859f05374fcf756021fc4a12075f05a35022034ea0079a8836b1534c528a9a4fba272cda5ef9cca6355c99b384fd8d56aacbb007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a0000019797e0696f0000040300473045022100c929f298daaa98b5c5f962ee1413293c74b6c9d91bd8c4b4c86333b68b63462902207e94a44c920548634cb5fe52f94b0fcee8b511115e5c5ac2241f8806c2500245
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		0035124cda795b7aa1ba8c029cf4be41362c569dfb7e2a6a8b337b57a12cdb1c7e1b362ff09ab881257fe7de5275ac1657dea3000386147f2689aaba929835af47aa99bccd508f5ed5c2845fb5f7a760c582c9782d7a9b981f0e433ab668b6fae65b815c5ebbdc415688d3c00ae7c9f44dfe0932d52c4991ca575d0a22a47c7e1b937ab496621f40af86b41f8db86538cbd1e1b3bad60211f170fd481296710a12ef480757df3439deae5ad3f7c8e33a543dd7f2e65637065168e6333ddb9f115dde1da6dd3e52d3982d13da4b322cba13c92bfa1974242fd777bede447b748e5a05be0698e473ff2da2f477f3744949b6a763d5c8c70d02142991d1dcc830635f