百科
简单易懂的短文，解释 IP 地址实际是如何工作的。
- Troubleshooting · 4 min
Troubleshooting Common IP Lookup Issues
What to check when an IP lookup fails, returns empty data, or shows a clearly wrong location.
- Geolocation · 6 min
How IP Geolocation Works
A short technical overview of how IP addresses are mapped to physical locations, and why it is fundamentally probabilistic.
- IP Intelligence · 5 min
VPN, Proxy, Mobile and Hosting IPs Explained
Modern IP intelligence classifies addresses into residential, mobile, hosting, proxy and VPN buckets. Here is what each means.
- Networking · 4 min
ASN, ISP and Reverse DNS: What Each Field Means
A short reference explaining the network ownership fields you see in any IP lookup: ASN, ISP, organization, and reverse DNS.
- Geolocation · 5 min
Why IP Geolocation Is Sometimes Wrong
IP geolocation is an estimate, not a GPS lock. Here is why the city, region, or even country can occasionally be inaccurate.
- Fundamentals · 4 min
Private vs Public IP Addresses Explained
The difference between private IPs used inside your home or office network and the public IP your ISP assigns you.
- Fundamentals · 5 min
IPv4 vs IPv6: What Is the Difference?
A short, practical comparison of IPv4 and IPv6: address format, why IPv6 exists, and what it means for everyday users and developers.
- Fundamentals · 6 min
What Is My IP Address? A Plain-English Guide
A clear, non-technical explanation of what an IP address is, why websites can see it, and what it does — and does not — reveal about you.