IPv4 vs IPv6 — what's the difference?
IPv4 vs IPv6 — What's the Difference?
Compare IPv4 and IPv6: address format, NAT, speed, security, and adoption. Check which protocol your connection uses with our free IPv6 test. Read More
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Comparison guides for networking, DNS, privacy, and web security — with links to free tools on VSPIC.
DNS lookup vs WHOIS
DNS Lookup vs WHOIS — What's the Difference?
DNS tells you where a domain points; WHOIS shows who registered it. Learn when to use each lookup and how to read the results. Read More
VPN vs proxy — which fits your need?
VPN vs Proxy — Which Should You Use?
VPNs encrypt all traffic; proxies usually only reroute one app or browser. Compare privacy, speed, and when each makes sense. Read More
Public IP vs private IP
Public IP vs Private IP — What's the Difference?
Your router has a public IP; your laptop has a private one. Learn how NAT works, why ipconfig is not your public IP, and when each number matters. Read More
SSL vs TLS in plain language
SSL vs TLS — What's the Difference?
People still say SSL, but HTTPS runs on TLS today. Learn the history, how the handshake works, and how to check your certificate expiry. Read More