Macroscopic Internet Topology Data Kit (ITDK)
ITDK 2021-03
This page describes ITDK release 2021-03, which consists of
- an IPv4 router-level topology,
- router-to-AS assignments,
- geographic location of each router, and
- DNS lookups of all observed IP addresses.
This ITDK was produced from traceroutes conducted on the Archipelago (Ark) measurement infrastructure. We used a subset of the IPv4 Routed /24 Topology Dataset, which contains traceroutes to randomly-chosen destinations in each routed /24 BGP prefix.
We used traces collected Feb 16 to Mar 2, 2021 on 111 Ark monitors located in 43 countries.

