Donate
Donate

IP Address, VPN & Network Security Blog

Free guides on IP addresses, VPNs, DNS, hosting, CGNAT, WiFi, and online privacy - 109 articles

New to IP Trackers?

Start with the core guides, then use the free tools to run live checks on your own connection.

What is an IP address?How VPNs workCheck my IP now

How to get the most from this blog

Every article is paired with a live tool so the theory turns into real diagnostics immediately. Troubleshooting a VPN? Read the leak guide first, then run DNS and WebRTC checks. Investigating an unfamiliar IP? Pair the ASN and WHOIS articles with the lookup tools. Start with a concept, finish with a verified result.

Understand the basics

Plain-English explainers on IPs, DNS, ASN, CGNAT, VPNs, WiFi, and networking - no jargon assumed.

Verify with live tools

Each article links to the diagnostic tool that proves the point, so you move from reading to real data in one session.

Fix real problems

Troubleshooting guides walk through port forwarding, CGNAT, wrong IP location, VPN leaks, and more with step-by-step checks.

Search articlesAuto-filters after 3+ characters
Quick filters
AllVPNDNSIP AddressASNCGNATHostingRouterPrivacyWHOISWiFiBlacklist
Sort by

How to Protect Your IP Address from Tracking

Discover effective methods to protect your IP address and maintain online privacy using VPNs, Tor, and more.

12 min readApril 26, 2026560 views
Read Article

What is an IP Address and How Does it Work?

Learn the fundamentals of IP addresses, how they are assigned, and their role in internet communication.

8 min readApril 26, 20261,150 views
Read Article

Surfshark vs NordVPN 2026: Cheap vs Premium Compared

Surfshark vs NordVPN for 2026. Pricing, unlimited device connections, streaming, audits, and whether the cheaper plan beats NordVPN for your use case.

9 min readUpdated Oct 22, 2026301 views
Read Article

Proton VPN vs Mullvad: Privacy, Price, Streaming

Proton VPN has a free tier, streaming, and port forwarding; Mullvad has email-free numbered accounts and flat EUR 5 pricing. See who should pick each.

10 min readUpdated Oct 24, 2026195 views
Read Article

NordVPN vs ExpressVPN 2026: Pricing, Speed, Privacy Compared

Head-to-head NordVPN vs ExpressVPN for 2026: pricing, NordLynx vs Lightway speed, audits, streaming, apps, and which to pick by use case.

10 min readUpdated Oct 22, 2026206 views
Read Article

AI VPN Detection 2026: How It Finds VPNs

AI VPN detection combines IP reputation, ASN, TLS fingerprints, behavior, and location mismatch to catch VPNs old blocklists miss.

10 min readUpdated May 5, 2026176 views
Read Article

How AI Knows Your Location from IP and Photos

AI does not see your IP inside the chat model, but vendors log IPs and AI can infer location from photos, text, browsing, and local tools.

9 min readUpdated Sep 4, 2026847 views
Read Article

AI Company IP Ranges 2026: GPTBot, ClaudeBot, CCBot Verified

Published IP ranges and ASN patterns for OpenAI, Anthropic, Perplexity, Common Crawl, Meta, and Apple. How to verify AI bots with forward-confirmed reverse DNS.

11 min readUpdated Aug 26, 2026442 views
Read Article

How to Block AI Scrapers: GPT, Claude and Perplexity Bots

Block AI crawlers with robots.txt, user-agent rules at Nginx and Cloudflare, and ASN-level rate limiting. Verify the block with reverse DNS.

10 min readUpdated Aug 26, 2026210 views
Read Article
Showing 37-45 of 109 articles

Done reading? Run a live check.

Every diagnostic is free - no account needed. See what websites actually learn about your connection right now.

My IP addressIPv4 + IPv6, ISP, ASNDNS leak test guideUnderstand resolver checksWebRTC leak testBrowser IP exposureBlacklist checkIs my IP blacklisted?

Free diagnostic tools

Most-read articles and reviews