Why do providers provide their own DNS servers?

Question

Domain Name System

What is the economic benefit for the provider from using its own DNS?
About manageability, speed, security, redundancy - and so it is clear. Interested in economic profit.
Why spend money on maintaining your own DNS, and not use the power of, say, Google?

Answer 1

The first response is ping.
The second is traffic ;
the third is spring-type blocking
; 4 parental control, such as Yandex;
5 maintenance of internal services (my.yota.ru, for example
)
;

Answer 2

Take it easy guys. Here is a simple situation for you, the subscriber has run out of balance, how can he show something without dns? That's right, no way! You can’t even enter your personal account to see or replenish this very balance. And to suspend services, the subscriber on the NAS server disables access to the Internet (not to be confused with another NAS that stores files :)), but access to local resources is left, for example, an internal portal, a personal account and, of course, a local DNS, so that all this joy is available without internet.

Answer 3

own DNS maintenance

What kind of service dude? DNS is a modestly resource-consuming program, a request is an answer. There is no maintenance there, it's not a hardware cluster. Vladimir Korotenko
listed all the reasons. Speed ​​of response (ping) - the faster the response with the name comes, the faster the download starts. There are many more #op worlds where a ping of 300 ms is not pipets, but normal work. The volume of traffic to the provider is usually not considered - this is especially true for opsos and their tariffs with per-megabyte accounting (if you yourself have not encountered this, this does not mean that they do not exist)
Blocking - everyone now "agreed" that the blocking is done by replacing the DNS request - the prov checks that the blocked resource is requested and replaces it with a screensaver with the inscription "Nizya!". A mass bypass of the locks will begin - the nuts will be tightened, and so there seem to be locks, but they don’t seem to exist ...
Advertising injection - for those who have not thought about switching to https, they can insert their ads on the site page.

Answer 4

The provider provides the Internet and sites open without VAT will not be provided