The 74.125 address is one of Google's. The 1e100.net domain is Google's. I may have fat-fingered the address, but the point was that they are using DNS load balancing. So, you'll get different IP's for the same name, depending on when you ask.
There are no "rogue A records" involved in this scenario or anything like that. The DNS servers at pairnic.com do not have data about google.com. They aren't caching, and they are not recursive.
Maybe the pairnic.com servers should return no answer, instead of the IP for their "parked domain" page. Their explanation is that this is how they handle parking newly registered domains by default. And, their DNS servers should not receive queries for domains for which they are not authoritative - since they aren't recursive/caching.
I don't think the DNS Report should assume that the pairnic.com DNS servers are caching or recursive. The pairnic.com nameservers will correctly answer queries for domains for which they are authoritative.
I think the report would be more useful if it queried a nameserver that it knows to be recursive, instead of "assuming" that a domain's nameservers will provide answers for other domains. When I suggested this out to SolarWinds support, they directed me here.
It would be interesting to know how the DNS Report behaves when the nameservers for the subject domain aren't recursive/caching and provide no answer at all.