nslookup -debug 142.251.39.46

Server:      192.168.0.1
Address:    192.168.0.1#53

------------
    QUESTIONS:
    46.39.251.142.in-addr.arpa, type = PTR, class = IN
    ANSWERS:
    ->  46.39.251.142.in-addr.arpa
    name = bud02s38-in-f14.1e100.net.
    ttl = 28040
    AUTHORITY RECORDS:
    ADDITIONAL RECORDS:
------------
Non-authoritative answer:
46.39.251.142.in-addr.arpa  name = bud02s38-in-f14.1e100.net.

Authoritative answers can be found from: