Find yourself in the Internet

See where your network's Autonomous System (AS) sits in the k-core decomposition of the whole Internet AS topology.

What is this?

The Internet is a network of networks: tens of thousands of Autonomous Systems (ASes), each run by a provider, university, company or organization. Your IP address belongs to one of them.

This page finds that AS and marks it on a LaNet-vi picture of the whole AS topology, built from the latest CAIDA AS-relationship snapshot.

How to read the numbers

  • k-core: every AS in the k-core has at least k neighbors that are also in it. Deeper cores are drawn closer to the center.
  • Deeper than X%: the share of all ASes in shallower shells. Most ASes are in the outermost shells, so a modest k-core is already deeper than most of the Internet.
  • Direct neighbors: ASes with a customer, provider or peer relationship with yours in the snapshot.

Data source

AS-relationship data from CAIDA (Center for Applied Internet Data Analysis), a monthly snapshot of the customer-provider and peer relationships inferred from BGP.

Your AS is the origin of the most specific BGP prefix that covers your public IP address, looked up on this server in CAIDA's daily RouteViews prefix-to-AS snapshot with originet. AS names come from Team Cymru, asked by AS number. Only when the snapshot has no answer is your address sent to a whois service (Team Cymru, then ipinfo). The address is not stored.