Why doesn't the Cisco router get an IP address for a host beyond the first DNS?

Question

Domain Name System

The Cisco 2901 router does not obtain an IP address for a host beyond the first DNS. The configuration specifies 3 name-servers:
ip name-server 8.8.8.8
ip name-server DNS provider
ip name-server 10.0.0.1 (main office DNS server connected via VPN)
The main office has a web server with the page example.ru . An attempt to ping him produces the following:

Router#ping example.ru
Translating "example.ru"...domain server (8.8.8.8)
% Unrecognized host or address, or protocol not running.

if 8.8.8.8 and 10.0.0.1 are swapped (i.e. so that the main office DNS server becomes the first), then the web server is pinged and opened.
What should be added so that the router goes through all the name-server, and not just the first one?
Actually, the entire router setting related to DNS:

ip domain retry 5
ip name-server 8.8.8.8
ip name-server DNS провайдера
ip name-server 10.0.0.1

ip dns server
ip domain lookup

Answer 1

I could be wrong, but should DNS be traversed in principle? If the answer is negative, the request is considered completed, I think so. But when the response timeout goes to the next DNS.

Answer 2

Check if incoming DNS traffic from Google DNS and ISP is blocked in the access-list