IP Address, VPN & Network Security Blog

Free guides on IP addresses, VPNs, DNS, hosting, CGNAT, WiFi, and online privacy - 88 articles

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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.

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

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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.

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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 read·April 18, 2026·166 views

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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 read·Updated May 5, 2026·76 views

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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 read·Updated May 25, 2026·141 views

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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 read·Updated May 25, 2026·48 views

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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 read·April 18, 2026·30 views

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Best VPN Comparison 2026: 9 VPNs Tested (Premium + Budget)

Head-to-head comparison of 9 VPNs in 2026: NordVPN, ExpressVPN, Surfshark, Proton, Mullvad, PrivadoVPN, hide.me, FastVPN, iTop VPN. Pricing, privacy, speed, streaming, and free plans.

22 min read·April 18, 2026·90 views

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Best Next.js Hosting 2026: 10 Providers Compared

Compare the best Next.js hosting options for 2026 with honest tradeoffs on pricing, SSR support, edge deployment, Docker setup, and post-deploy verification.

12 min read·April 17, 2026·62 views

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