How change cloudflare nameservers

Hello
im talking about 3 different website in 3 different accounts:
check pings for website 1 which load perfect :

ping gail.ns.cloudflare.com

Pinging gail.ns.cloudflare.com [173.245.58.116] with 32 bytes of data:
Reply from 173.245.58.116: bytes=32 time=134ms TTL=49
Reply from 173.245.58.116: bytes=32 time=133ms TTL=49
Reply from 173.245.58.116: bytes=32 time=133ms TTL=49
Reply from 173.245.58.116: bytes=32 time=131ms TTL=49

website 2 which load good:
ping mark.ns.cloudflare.com

Pinging mark.ns.cloudflare.com [173.245.59.130] with 32 bytes of data:
Reply from 173.245.59.130: bytes=32 time=121ms TTL=49
Reply from 173.245.59.130: bytes=32 time=119ms TTL=49
Reply from 173.245.59.130: bytes=32 time=120ms TTL=49
Reply from 173.245.59.130: bytes=32 time=120ms TTL=49

and my website nameserver which is very bad:

ping chuck.ns.cloudflare.com

Pinging chuck.ns.cloudflare.com [172.64.33.86] with 32 bytes of data:
Reply from 172.64.33.86: bytes=32 time=123ms TTL=49
Request timed out.
Request timed out.
Request timed out.

how can i change my cloudflares nameservers to those ?

The inability to receive IMCP responses is not indicative of a a problem with the nameserver. If your website isn’t loading, what issue are you actually seeing?

2 Likes

mm all of these websites are located in same DC, question is why 3rth nameserver which is my Cloudflare nameserver has lots of timeout other nameservers are response without problem.
how can i change my Cloudflare nameservers to those?

Do you actually run into issues with your site?

yes, our customer from Dubai Iraq and Iran have to refresh website several times and most of them still cant visit our website,. when ive change DNS and remove cloudfare, problem solved. for fist step of troubleshooting i found this ping which indicates the problem,

That does not necessarily mean they have DNS issues.

so why they cant ping cloudflares DNS fom their network but they can ping other Cloudflare nameserver without problem ? it means there is an issue regarding my current Cloudflare nameserver