Tool guideDNS & Domains
Nslookup – Complete Guide to DNS Record Lookups
What a DNS lookup really asks, how to query A, AAAA, CNAME, MX, NS, TXT, SOA, CAA and SRV records online, and how to read NXDOMAIN, empty answers and TTLs.
Technical guides for every NetTools.tech tool — what it does, how it works, how to read the results and how to troubleshoot — plus articles for system administrators, DevOps engineers and security professionals.
Tool guideDNS & Domains
What a DNS lookup really asks, how to query A, AAAA, CNAME, MX, NS, TXT, SOA, CAA and SRV records online, and how to read NXDOMAIN, empty answers and TTLs.
Category guideDNS & Domains
An overview of the NetTools.tech DNS and domain tools: what each one checks, which to reach for when a domain does not resolve, a change is not visible or a certificate fails, and how to combine them.