Expert IP Address Basics Guides

Published Sep 27, 2026

WHOIS vs RDAP: What Changed, What Did Not, and Whether the Command Still Works

WHOIS vs RDAP explained. ICANN did not switch WHOIS off in 2025. The obligation expired, .com is an exception, and port 43 still answers....

Expert Analyst Sarah Thompson

Published Sep 27, 2026

How to get your own ASN in 2026. ARIN asks for no justification, APNIC gives non-members two free, RIPE still wants multihoming. Real per-re...

Expert Analyst Sarah Thompson

Published Sep 27, 2026

What is CGNAT? Your carrier translating your traffic twice. Why the usual 100.64 test misses the common case, what it really breaks, & what ...

Expert Analyst Sarah Thompson

Published Feb 17, 2026

Learn what an IPv6 address is, how to read its format, types explained, and how to find your IPv6 address on any device. Complete 2026 begin...

Expert Analyst Robert Harrison

Published Dec 25, 2025

Detailed IPv4 vs IPv6 header comparison. Learn why IPv6 headers are more efficient, the difference in packet formats, and how RFC 8200 impro...

Expert Analyst Sarah Thompson

Published Dec 21, 2025

Not a hack. The database is describing your ISP's equipment, not you, and its own city-level accuracy figure is 66%. Here is why, & what act...

Expert Analyst Sarah Thompson

Published Dec 20, 2025

Confused why ipconfig shows 192.168.1.x but TrustMyIP shows something different? Learn exactly what public and private IP addresses are and ...

Expert Analyst Sarah Thompson