IP Address
IPv4 Addresses Explained Without the Textbook Detour
An IPv4 address is four numbers between 0 and 255, and its limited size — not any flaw in the design — is the reason NAT and IPv6 both exist.
Network Privacy, IP & Security Guides
Practical explanations and diagnostic steps for IP reputation, VPN and proxy risks, DNS, WebRTC, IPv6 and safer internet connections.
Browse by topic
Categories
Fresh, practical answers
136 articlesLatest Guides
IP Reputation
How to Check IP Reputation and Read the Result
Checking IP reputation is straightforward — the harder part is reading the result as one data point rather than a single vendor's verdict.
Proxy
SOCKS5 Proxy Explained
SOCKS5 is a more general-purpose proxy protocol than HTTP proxies — it can forward almost any kind of traffic, but doesn't encrypt payloads by default and leaves DNS handling as a separate configuration choice.
DNS
DNS Leaks Explained
A DNS leak sends your domain lookups outside your VPN's tunnel, usually straight to your ISP's resolver, even while your regular traffic looks protected. Here's what actually happens and why it matters.
WebRTC
How WebRTC Can Reveal IP Addresses
WebRTC's ICE candidate-gathering process learns your public address by design — modern browser protections limit what a page can extract from that process, but don't eliminate the underlying exposure entirely.
IPv6
How to Read an IPv6 Address
Reading an IPv6 address means understanding hextets, zero compression, prefixes and scope — notation that looks intimidating at first but follows a small set of consistent rules.
Privacy
Browser Privacy Is More Than Clearing History
Browser privacy spans far more than clearing history — storage, permissions, fingerprinting exposure, sync settings, extensions and update status all shape what a browser actually reveals.
Network Security
Suspicious IP Detection Without Binary Thinking
Effective suspicious-IP detection combines network intelligence with request velocity, routing anomalies and history — then applies a response proportionate to the actual confidence level, not a binary block-or-allow decision.
AI Access
Why Claude May Not Be Available on Your Connection
"Claude isn't available" has several distinct possible causes — official availability, account status, browser issues, IP-based network signals, and unsupported country messaging — worth working through methodically rather than guessing.
IP Address
How IP Geolocation Works—and Why It Sometimes Gets the City Wrong
IP geolocation is built from network registration records, routing data and commercial observation, not GPS — which is exactly why it's reliable at the country level and much less so for a specific city.
IP Reputation
What Makes an IP Address Look High Risk?
High-risk classification usually comes from a combination of recent abuse, automation signals, network type, and behavioral anomalies — rarely from any single factor alone.
VPN
VPN Detection Explained: Signals, Confidence, and False Positives
VPN detection is a confidence judgment built from multiple observable signals — known exit-node lists, hosting-range registration, and behavioral patterns — not a single definitive flag.