The ASN is an ISP — why a datacenter IP?
Network ownership vs range usage vs per-IP signals, the "double ISP means residential" and "high human traffic" myths, and CleanIP's IP type classification order.
Native IP vs broadcast IP: differences and detection
A native IP's registration country matches where it is used; a broadcast IP is a block announced by a multinational IDC in another country. How to tell, why risk systems care, and how to check.
Why AI tools ban your IP
What signals Claude / ChatGPT / Gemini risk systems look at, why two IPs from the same country behave differently, and how to check your own.
Why Can't Some IPs Be Traced to an ASN?
An IP responds to ping and whois shows a company name, yet no ASN turns up? That's because an ASN is only announced through BGP — IPs that never enter the global routing table (private ranges, unpublished blocks, aggregated prefixes) have no origin ASN. Verified with real RIPEstat / Team Cymru lookups, with a clear explanation of the difference between an ASN and the whois registrant name.
How to Find Your Public IP / Egress IP / Gateway IP — A Cross-Platform Guide
What does each of these three IP types actually mean? A full walkthrough with commands and screenshots for Windows, macOS, Linux, iOS, Android, and your router's admin panel — including VPN, CGNAT, and IPv6 edge cases.
The Complete IPv6 Guide — How It Differs from IPv4, and How to Enable or Disable It
IPv6 adoption has passed 45% in 2026, and China Telecom home broadband now ships dual-stack by default. How do you check whether you have IPv6? Step-by-step instructions for disabling IPv6 on Windows, macOS, and Linux, plus hands-on coverage of VPN IPv6 leaks and CGNAT.
The Full DNS Resolution Journey — How Many Hops from Browser to Root Server?
From typing google.com to getting back an IP address, DNS resolution passes through 5 layers of caching and 4 round trips across the network (root, TLD, and authoritative servers). Covers TTL, recursive vs. iterative resolution, DoH optimizations, and a live dig +trace walkthrough.
AS / ASN / BGP Routing — Understanding the Internet's Backbone
The internet is 75,000+ Autonomous Systems stitched together by BGP. Covers AS-PATH route selection, the Tier 1/2/3 ISP hierarchy, real route-hijacking incidents, RPKI defenses, and an mtr trace of the AS path from home to Google.
What Is VPN Tracing? How Do You Avoid Being Tracked?
A VPN is not the same as anonymity. This piece breaks down 8 dimensions — IP, DNS, TLS, browser fingerprinting, TCP-layer signals, behavior, provider logs, and cross-account correlation — explaining exactly how you can be traced back, with practical defenses for each dimension and links to our own self-check tools.
What Is 192.168.1.1? A Complete Guide to Private IPs, Gateways, and RFC 1918
How do you log in to your home router at 192.168.1.1 or 192.168.0.1? And what are 10.x.x.x, 172.16.x.x, 100.64.x.x (CGNAT), 169.254.x.x, and 127.0.0.1 actually for? Includes a reference table of default IPs for major router brands.
The Global Public DNS Directory — Comparing 15+ Major Resolvers
Cloudflare 1.1.1.1, Google 8.8.8.8, Quad9, AliDNS, DNSPod, 114DNS, OpenDNS, AdGuard, and more — which one is fastest, which filters malicious domains, which keeps no logs, and which is most stable inside mainland China.
Why Are There Only 13 Root Nameserver Groups Worldwide?
The 512-byte hard limit of DNS over UDP set a mathematical ceiling of 13 groups, locked in back in 1995 — and today over 1,400 anycast mirrors carry the load of resolving the entire internet. A deep dive into how it all works.