@lesbianhacker Well, a forward lookup simply asks the owner of the domain what the IP address is. You are the owner of the domain, so it will ask whichever DNS server you have told the registrar to use (i.e. yours).
Reverse lookups are the opposite. The DNS will ask the owner of the IP address range (i.e. your ISP) which DNS is responsible for providing the answer. Therefore you need to make sure the ISP returns the correct DNS.
If not, they'll respond themselves, which might be OK.
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