Just renew domain and website get error

My domain is: tradinghieuqua.com
My web server is I don’t know. Because I have been using the Blogger platform of Google.
My domain provider is: Namecheap

The problem is that i just renew the domain. This year Namecheap don’t provide an SSL (last year, Namecheap offer 1 year free).
So after that, my site got this error " ERR_CERT_COMMON_NAME_INVALID" error. And get this message " This server could not prove that it is www.tradinghieuqua.com ; its security certificate is from *.ssl.hwcdn.net . This may be caused by a misconfiguration or an attacker intercepting your connection."

And if I tried to open via HTTP, I got 502 error appeared.

Can anyone help me with this problem.
Thanks every much.

1 Like

Hi @hieult

checking your domain there are completely different results - https://check-your-website.server-daten.de/?q=tradinghieuqua.com

Your ip addresses:

Host T IP-Address is auth. ∑ Queries ∑ Timeout
tradinghieuqua.com A 151.139.128.10 Ashburn/Virginia/United States (US) - Highwinds Network Group, Inc. No Hostname found yes 1 0
AAAA yes
www.tradinghieuqua.com A 151.139.128.10 Ashburn/Virginia/United States (US) - Highwinds Network Group, Inc. No Hostname found yes 1 0
AAAA yes

There is nothing from Google visible.

Your name servers:

Domain	Nameserver	NS-IP
www.tradinghieuqua.com
	•  dns1.registrar-servers.com
		•
tradinghieuqua.com
	•  dns1.registrar-servers.com
	156.154.132.200
Chicago/Illinois/United States (US) - NeuStar, Inc.	•

	• 
	2610:a1:1024::200
Sterling/Virginia/United States (US) - Cogent Communications	•

There is NeuStar, not Namecheap. I don’t know if NeuStar uses Namecheap.

There are two valid Letsencrypt certificates:

Issuer not before not after Domain names LE-Duplicate next LE
GTS CA 1D2 2019-12-06 2020-03-05 www.tradinghieuqua.com - 1 entries
Let’s Encrypt Authority X3 2019-10-23 2020-01-21 tradinghieuqua.com - 1 entries
Let’s Encrypt Authority X3 2019-10-23 2020-01-21 tradinghieuqua.com - 1 entries
Let’s Encrypt Authority X3 2019-10-09 2020-01-07 www.tradinghieuqua.com - 1 entries

2020-01-07 and 2020-01-21.

But there is a completely different certificate used:

CN=*.ssl.hwcdn.net, OU=Domain Control Validated
	03.01.2019
	21.01.2020
expires in 30 days	*.ssl.hwcdn.net, ssl.hwcdn.net - 2 entries

Looks like a CDN, so that CDN must have a valid certificate with your domain name. And there is a http status 502 - Bad Gateway.

Looks like your informations are wrong. What’s hwcdn?

2 Likes

thanks @JuergenAuer
Actually I dont know either.
Now I am trying to restart my domain in Blogger setting again.

It’s Namecheap. They outsource some of their DNS infrastructure to Neustar. (Previously to Verisign, which sold that business to Neustar.) See e.g.:

https://www.namecheap.com/support/knowledgebase/article.aspx/766/10/what-is-dns-server-name-server

3 Likes

Ah, thanks, good to know.

well till now I only have 502 bad gateway error only. The ERR_CERT_COMMON_NAME_INVALID error is no longer shown

1 Like

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