Why is there no access to the site hosted in America from time to time?

Question

Domain Name System

Please tell me, can anyone come across such a phenomenon - my site is hosted in America (the hoster is not bad and not the cheapest), periodically it stops opening at all, I switch to another provider: let's say from home to an iota and all the way ...
So I sit and sorting through two home providers + 3G + Yota, fun.
Moreover, an error, that is, an irregular failure, is a floating problem.
I pinged it and tested it in every possible way, it gives such an error:

SOA
Delivery over IPv4 to [email protected] could not be done.
Failed to deliver email for SOA RNAME of weblrr.com (root.amypond.asmallorange.com) using [email protected]

DNSCheck failed to deliver email to the email address listed as the one responsible for the zone.

Maybe because of her? Whom to pull: a hoster or a domain registrar? Or maybe dig into the host settings or the registrar panel?

my domain is: weblrr.com
hosting: asmallorange.com
domain name reg: namecheap.com Thanks

in advance for your reply!

Answer 1

Do you have shared hosting or VPS?
If ns-ki are correctly registered in the settings of the registrar, then torment the hoster.

Answer 2

In the end, nothing helped .... I will change the host :(