problems with DNS resolution and

The site is not available, does not open, what to do in this case:

First of all, check the settings of the network card.

As a rule, the settings specified DNS server of the provider, if the settings is OK, check the DNS command:
nslookup -query = a -timeout = 10 aisgzk.kz 212.19.149.53

The correct answer

Server: 212.19.149.53
Address: 212.19.149.53 # 53

Non-authoritative answer:
Name: aisgzk.kz

Address:. Address of our server

If the answer is server can not find aisgzk.kz: NXDOMAIN

This means that the DNS server your ISp is likely not working properly.

Decision

  1. Call the provider and find out.
  2. To register your computer, normal, stable DNS-server.

.KZ area served by the following DNS-servers:

  1. The foreign:
    • ns-kz.ripe.net
    • auth00.ns.uu.net
  2. Russian:
    • ns.ru.net - 193.124.22.65
    • ns.spb.su - 193.124.83.69
  3. Kazakhstan:
    • ns.nursat.net
    • ns.nic.kz
    • ns.ricc.kz