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IP Address, VPN & Network Security Blog

Free guides on IP addresses, VPNs, DNS, hosting, CGNAT, WiFi, and online privacy - 99 articles

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

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.

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iTopVPN Review (2026): Free Tier, Pricing, and Real-World Fit

iTopVPN review for 2026 covering free-plan limits, low promo pricing, split tunneling, privacy claims, and what to verify before you pay.

9 min read·Updated Apr 21, 2026·826 views
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Mullvad VPN Review (2026): Maximum Privacy, Minimum Data

Mullvad VPN review for 2026 covering numbered accounts, cash payments, WireGuard, DAITA, and who this privacy-first VPN actually fits.

9 min read·Updated Aug 26, 2026·151 views
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Private Internet Access Review (2026): Privacy and Value

Private Internet Access review for 2026 covering open-source apps, MACE, split tunneling, pricing, and whether PIA still fits power users.

9 min read·Updated Apr 21, 2026·369 views
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PrivateVPN Review (2026): Simplicity and Streaming

PrivateVPN review for 2026 covering ease of use, privacy basics, network tradeoffs, pricing, and who should consider it.

8 min read·Updated Apr 21, 2026·324 views
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Proton VPN Free Plan (2026): Limits Before You Install

Proton VPN Free has unlimited data and servers in 10 countries, but only one device and no P2P, streaming servers or Secure Core. See every limit.

9 min read·Updated Aug 26, 2026·783 views
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PureVPN Review (2026): Features, Value, and Who It Fits

Practical PureVPN review for 2026 with feature highlights, tradeoffs, and a technical checklist to validate real-world setup.

9 min read·Updated Aug 26, 2026·88 views
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Surfshark Review (2026): Unlimited Devices, Pros, and Tradeoffs

Detailed Surfshark review for 2026 covering unlimited-device value, feature set, performance checks, and who should choose it.

9 min read·Updated Apr 21, 2026·1,625 views
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TunnelBear Cure53 Audit: 47 + 42 Days (2026 Review)

TunnelBear 5th annual Cure53 audit took 47 days; the 6th took 42 days. Full 2026 review of safety, speed, free tier, and who TunnelBear is right for.

8 min read·Updated May 25, 2026·82 views
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Urban VPN Review (2026): Extension, Chrome, Reddit Feedback, and Safety Checks

Urban VPN review for 2026 with practical checks for Urban VPN extension, Urban VPN Chrome extension behavior, and Reddit-driven concerns.

8 min read·Updated Apr 21, 2026·177 views
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Showing 46-54 of 99 articles