IP Address, VPN & Network Security Blog

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

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.

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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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Showing results for "DNS" (12)

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

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

Windscribe Free Plan 2026: 10 GB Data Limit + Features

Windscribe free plan 2026: 10 GB/month monthly data limit after email confirmation (2 GB without), 10 countries, R.O.B.E.R.T. DNS blocking, all official limits.

8 min read·Updated May 25, 2026·45 views

What Is Web Hosting? How Hosting Works and What You Actually Buy

Learn what web hosting is, how hosting fits into DNS and website delivery, the main hosting types, and how to choose the right category for your site.

10 min read·April 7, 2026·56 views

Gaming IP Security: Hide IP and Reduce DDoS Risk

Hide your IP while gaming by reducing peer-to-peer exposure, hardening router settings, and verifying VPN, DNS, and WebRTC protection.

10 min read·Updated May 5, 2026·303 views

IP Checker Alternatives: How to Compare "What Is My IP" Tools

Learn how to compare "what is my IP" tools and when you need DNS leak, WebRTC leak, ASN, and blacklist diagnostics beyond a basic IP checker.

7 min read·February 23, 2026·17 views

How to Fix a VPN DNS Leak: Windows, Mac & Browser

Step-by-step DNS leak fix for VPN users on Windows, Mac, and Chrome/Firefox. Check resolvers, disable browser DoH overrides, and stop IPv6 leaks.

9 min read·Updated May 25, 2026·0 views

VPN Connected but IP Not Changing? How to Fix It

Troubleshoot VPN sessions where IP does not change. Learn the common causes (split tunneling, DNS/IPv6 leaks, routing) and fast fixes.

8 min read·Updated May 25, 2026·1,601 views

PTR Record Explained (Reverse DNS in Plain English)

What a PTR record is, where it lives (in-addr.arpa / ip6.arpa), and when it matters for email and security.

6 min read·January 9, 2026·52 views

Showing 1-9 of 12 articles