How to solve DNS problem in ISPManagerLite?

Question

Domain Name System

Digitalocean's vps has ISPManagerLite installed.

There is a domain name terradv.ru (the domain is parked at Yandex at pdd.yandex.ru)
The site works and all that.

I made a subdomain severdv.terradv.ru in the control panel and it opened for a couple of days, then stopped.

Now he doesn't want to.
I ping severdv.terradv.ru - it gives me ip
(64 bytes from aha.ru ( 195.2.72.155 ): icmp_req=19 ttl=117 time=62.3 ms)
generally left (the site severdv.terradv.ru does not open at all), although "native" ip for both of them - 37.139.11.92

How did it happen that my domain is generally given a left ip that is not registered anywhere???

Now I added an A record for the severdv subdomain with an ip address of 37.139.11.92 - it seems to work.
But the main question still remained - why was an extraneous ip issued to the domain name?

PS I'm not strong in terminology, I could describe some things incorrectly
PSS Added type A for subdomain *

Answer 1

I made a subdomain severdv.terradv.ru in the control panel and it opened for a couple of days, then stopped.

In what panel did you do it in ISP or pdd. I still don't understand

Answer 2

Do not bother, rather your pdd.yandex.ru gave something wrong, and most likely because you did not correctly register the A record on the server.

Answer 3

I will advertise the fmonsy.com DNS service , maybe it will suit you better.