About IP and connections
Start with IP addresses for the basics. Read ASN to understand an unexpected operator name, or IP geolocation when the displayed area differs from your location. Each explains how to work through the results. Check your connection in IP & connection, or use IP Information Lookup for an IP's registration details.
What is an IP address?
The meaning and limitations of the source IP address visible to a website.
IPv4 and IPv6
Address formats, lengths, and how to read the detected IP version.
What is the IP address source?
Which trusted forwarding header NetKarte used for the displayed IP.
What is a network operator?
The ASN organization associated with an IP and why it is not always an ISP.
What is an ASN? Network operators and how to check
Understand ASNs, IP addresses, and operator names, then learn how to read NetKarte results and their limits.
Why is my IP location wrong? Reading geolocation estimates
Learn why IP location can differ from your location, how to read country and coordinates, and what to check next.
What is RDAP?
The standard JSON protocol for IP address and domain registration data.
What is an RIR?
The regional Internet registries responsible for IP addresses and ASNs.
What is WHOIS?
The traditional registration-data protocol and how it differs from RDAP.