As part of our legacy infrastructure, we are using two external DNS forwarders (210.80.58.205, 210.80.58.210) which are owned by Verizon.
Those are located in Singapore, and used by one of our Asian AWS DNS server.
Lately, our DNS operation team noticed that those Verizon DNS forwarders are not answering our DNS requests anymore.
No change has been applied on our side, and we can see the traffic leaving our AWS without any answer from Verizon DNS forwarders.
Our assumption is that our public IPs need to be whitelisted from Verizon side.
escalated to my account team with no luck - who do i contact?
