My websites are not available from some places

2 domains from 12 are not accessible:
serw.su
dragonserw.ru

That domains are not visible from Krasnodar krai, Russia. From Moscow they are visible! That’s strange!

$ nslookup serw.su
Server: 192.168.1.1
Address: 192.168.1.1#53

Non-authoritative answer:
Name: serw.su
Address: 104.27.164.121
Name: serw.su
Address: 104.27.165.121

https://community.cloudflare.com/search?q=russia