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NsLookup.io
nslookup | Microsoft Learn
DNS Lookup Tool - DNS Tools - MxToolbox
How to Use the nslookup Command {10 Examples} - phoenixNAP
NS Lookup
NS Lookup - Lookup Nameserver of any Domain - DNS Checker
How to Use Nslookup Windows Command (11 Examples)
What Exactly Is nslookup, and How Does It Work? - Hostinger
nslookup - Wikipedia
A Complete Guide to the nslookup Command | Linode Docs