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GTM sub-domain query flow

I would like to know who's DNS Server will have the DNS query to GTM that acting as subdomain.

External DNS: company.com (PUBLIC)
www.company.com IN CNAME www.wip.company.com
delegate wip.company.com
wip IN NS gtm.domain.com
gtm.domain.com IN A

As a client, i'm using 8.8.8.8 as a DNS Server. When I performed nslookup to www.company.com. I want to know who's DNS server is the one sending DNS query to GTM, is it the 8.8.8.8(Client DNS) or the External DNS (company.com)?

Thanks!

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER

The queries will come from the Client DNS server. Once the query reaches the CNAME record on the External DNS server, the Client DNS will attempt to restart the DNS query process but instead it will search for the domain name listed in the CNAME record.

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Comment made 2 months ago by Jason 6

Thank you Rico!

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