Check SSL certificate: Dlcourse.net

The entire testing process is very fast and takes place in milliseconds. If you are the owner of the domain in question and the SSL test shows that the website does not use a valid SSL certificate, then consider purchasing a valid SSL certificate.

SSL Certificate Verification Process

The SSL certificate checking process takes place in the following stages:

A request to review the SSL certificate is sent via the online form on this webpage for a specific domain.
Our server first resolves the domain into an IP address (for example, the domain name Dlcourse.net resolves to the IP address 5.182.210.39) and then connects to the website's server to request a digital identification (SSL certificate).
The server of the requested domain sends us a response in the form of a copy of the SSL certificate (if they have one)
Our tool checks whether it is a valid SSL certificate and displays the result of the verification process, including the certificate chain.

Below is a complete overview with all visible details after checking the SSL certificate for the requested domain, along with the final conclusion.

Enter the new domain for which you want to check the SSL connection and find out if it uses a valid SSL certificate or not.

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Website Basic Info

SSL Certificate Test Process
Domain / Website:	Dlcourse.net [ Dlcourse.net Location - Check DNS Record - Blacklist Check - Check Website Authority ]
IP Address:	5.182.210.39
Hostname of Website:	5.182.210.39 (Not set. Same as IP address)
NSLookup (Nameservers):	ns1mwxaz.ams1.phanes.cloud >> 5.182.210.39 ns902.f7-networks.com ns901.f7-networks.com ns2rrcsr.ams1.phanes.cloud >> 5.182.210.135
SSL Certificate Chain
Level : 1
Issuer CN :	R11
Subject CN :	dlcourse.net
Organization :	Let's Encrypt
Valid From :	2025-04-21
Valid To :	2025-07-20
Serial Number :	589211862878309385917520265731595291676823
Signature Algorithm :	sha256WithRSAEncryption
Fingerprint (SHA-1) :	62633264363930376263626235353134326130376538346665353733323533323962303666373736
Fingerprint (MD5) :	3366323564303936653630356566383430333435346436346163323564623537
Download Certificate :	Download Level 1 Certificate
Level : 2
Issuer CN :	ISRG Root X1
Subject CN :	R11
Organization :	Let's Encrypt
Valid From :	2024-03-12
Valid To :	2027-03-12
Serial Number :	184083759606652600789093070426744763640
Signature Algorithm :	sha256WithRSAEncryption
Fingerprint (SHA-1) :	31326131393337653238633964353464336366333963633963373139646664633335306437663161
Fingerprint (MD5) :	6634633430326631326161643134336133356131353932353738623161343265
Download Certificate :	Download Level 2 Certificate
Website Info From Cert ame (All in one): /CN=dlcourse.net CN (Server/Website Name): dlcourse.net SSL Cert Check Version: 2 Issuer Country: US Certificate Name: R11 Issued by Organization: Let's Encrypt Valid From: 2025-Apr-21 Valid To: 2025-Jul-20 Total Valid Days: 89 days Remaining Days: 68 days Serial Number: 589211862878309385917520265731595291676823 Purposes 1: sslclient 2: sslserver 3: nssslserver 4: smimesign 5: smimeencrypt 6: crlsign 7: any 8: ocsphelper 9: timestampsign SSL Cert Extensions Key Usage: Digital Signature, Key Encipherment Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication Basic Constraints: CA:FALSE Subject Key Identifier: D8:CF:49:70:6B:7B:CB:E8:4A:13:10:72:50:07:C5:30:59:DD:D9:5D Authority Key Identifier: keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9 Authority Info Access: OCSP - URI:http://r11.o.lencr.org CA Issuers - URI:http://r11.i.lencr.org/ Subject Alternative Name: DNS:dlcourse.net, DNS:mail.dlcourse.net, DNS:www.dlcourse.net Certificate Policies: Policy: 2.23.140.1.2.1 Crl Distribution Points: Full Name: URI:http://r11.c.lencr.org/24.crl Public Key: -----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqm7LaTzhmjpsKzZ/RbUD YxqRXdSS5+717RFNj96fBPWr2HY+6U0gUprBScKiGbHaTkb+vu+JbYVRKyOrMmog sC3f4zjWBAc3kRHjHMqVqhdnYSvgd0wsplpuzNR6gizILm+RGjOawHg9yoIlWQU+ Qsi4eDKtJ9NDnSXUGYK+ov6QrIlOpcnV776u/ElkSCvnAFQIsDTiDYE5+FQK8tsK Q9OEWEseO6/OkStns+YV8qVE9uliiYiLIlsVUlOwNwc7em4As/OaZDTxnSMeUbgo p5fnOMDamFHJpBJHy3mnbKLS0x9KvWPeoioqqqYQaitzyZDoWYDy1yhWUGgqOjJ4 iwIDAQAB -----END PUBLIC KEY-----
Conclusion
Dlcourse.net has a valid SSL certificate from a certificate authority (CA) Let's Encrypt, purchased op 2025-Apr-21 and which is valid until 2025-Jul-20 with serial number 589211862878309385917520265731595291676823. There are a total of 68 days days left until this certificate expires. Website Dlcourse.net use TLS / SSL / Hypertext Transfer Protocol Secure (HTTPS) https:// - encrypted and secure connection on port 443. Well done!!!