From the stupid DNS tricks department: ipasn.net
A trick that lets you map an IP address to an ASN without preprocessing any data.
IP address to organization name map
Mapping Internet number resources from IP addresses to organizations is straightforward using whois or RDAP, but listing all resources held by a given organization is far more challenging. This post explores a simpler, data-driven approach using RIR extended statistics and reg-id identifiers.
IP addresses through 2025
What IPv4 and IPv6 addressing in 2025 tells us about the changing nature of the network.
BGP updates in 2025
Geoff Huston explores changes to the stability of the routing system in 2025.
BGP in 2025
Geoff Huston’s annual analysis of BGP routing table growth for 2025 and some projections.
Where are you? A look at GeoIP
Are IP addresses the right tool for determining location? Examining location from the perspectives of geolocation providers, CDNs, content intermediaries, RIRs, satellite operators, and other stakeholders.
Hot takes on 13 talks from NANOG 95
Geoff Huston attended NANOG 95, and shares his take on the presentations that caught his attention.
A second look at geolocation and Starlink
The initial analysis of the anomalous data for Starlink users in 20 economies led APNIC Labs to override the Starlink geolocation data that refers to those 20 economies. This second look at the situation in Yemen has given us a lot more confidence in the fidelity of the Starlink geolocation data.
How we measure: IPv6
Breaking down APNIC Labs IPv6 measurement and its caveats.
Where the evolution of the Internet may be heading
The Internet is not a centrally planned global enterprise. We’ve transitioned from an era of network scarcity to an era of abundance. Where is this all heading?