DNS issue while accessing sigmajs.org website

[paulgirard]

Someone reported access issue to the website.
I confirm I can't access it neither.

I've checked github pages actions results and configurations.
Everything looks good to me, good meaning as the documentation says.

sigmajs.org domain DNS entry is as expected

dig SIGMAJS.ORG +noall +answer -t A
SIGMAJS.ORG.		1036	IN	A	185.199.110.153
SIGMAJS.ORG.		1036	IN	A	185.199.108.153
SIGMAJS.ORG.		1036	IN	A	185.199.109.153
SIGMAJS.ORG.		1036	IN	A	185.199.111.153

www.sigmajs.org too

dig WWW.SIGMAJS.ORG +noall +answer -t A
WWW.SIGMAJS.ORG.	376	IN	CNAME	jacomyal.github.com.

But :

nslookup www.sigmajs.org
Server:		127.0.0.53
Address:	127.0.0.53#53

** server can't find www.sigmajs.org: NXDOMAIN

And if I edit my local /etc/hosts file with

185.199.108.153 www.sigmajs.org

I can access the website locally.

It looks like something goes wrong when github deals with the www. apex

 dig WWW.SIGMAJS.ORG  +nostats +nocomments +nocmd
;WWW.SIGMAJS.ORG.		IN	A
WWW.SIGMAJS.ORG.	202	IN	CNAME	jacomyal.github.com.
github.com.		202	IN	SOA	dns1.p08.nsone.net. hostmaster.nsone.net. 1656468023 43200 7200 1209600 3600
github.com.		879	IN	SOA	ns-1707.awsdns-21.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

And the sigmajs.org is automatically redirected by github to www. version.

I have no better idea than wait and see for now.
But I am far from being a network expert...

If you need to access the website the only workaround for now is to custom DNS resolve entry in your local configuration as I did with the /etc/hosts (linux only).