How to explain broken domains?

Question

Domain Name System

I have about 20 mobi and info domains registered with Godaddy.com. Domains are all paid and renewed.
On April 16, 2015, after 11 am, 5 domains became unavailable in part of the country. I used the ping-admin.ru service to check their availability in different parts of Russia. The audit showed that they are not available in most of the country. An example of such a domain is logist.mobi Godaddy's
technical support said that this had nothing to do with their work and the information in the DNS servers did not change. And all the problems are with local Internet providers in these cities.
I am not very well versed in network technologies, but it seems to me that these statements are complete nonsense. And it is the registrar of names that is to blame, who screwed up something.
Question to the community - what is the cause of the described problem? And who is to blame?
PS The given addresses are not advertising, but are given as an example.

Answer 1

There is already a similar topic with great discussions
. I advise you to use the search and not to produce entities.

Answer 2

The audit showed that they are not available in most of the country.

IP resolving?
Probably yes.
Then present it to the host.

Answer 3

I have a theory. Godaddy misbehaved in Crimea. he was subtly hinted that they could lose our market. There are tons of such services anyway. and the demonstration execution will be a lesson for those who decide to repeat their path. I fully support this approach. switch to other dns servers quickly and score.
www.topnews.ru/news_id_76944.html here is some pretty funny news by the way

Answer 4

100% answer to the question.
1. Do not register with GoDaddy. There are enough articles on Habré explaining why.
2. Do not use the registrar's DNS servers. The same CloudFlare did not please you?
For greater reliability, use DNS servers on different domains and in different data centers.