Archipelago Monitor Locations
Archipelago (Ark): CAIDA's active measurement infrastructure serving the network research community since 2007.
Help researchers understand how the Internet connects. Ark is CAIDA's network of Internet measurement computers, hosted by organizations and volunteers around the world, and this page shows where each one is and what it measures. Measurement statistics for each node, and summary graphs for all of them, are on the Ark node statistics page. For other CAIDA active and passive data monitors, see the CAIDA Data Monitors page.
Locations
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Filters
Pick values to narrow the map.
What the filter values mean
- IPv6 probing: each monitor traces a path to every announced IPv6 prefix once a day.
- IPv4 team probing: monitors share the work of tracing a path to a random address in every routed IPv4 /24 network, covering all of them about once a day.
- IPv4 prefix probing: each monitor in this group traces a path to every announced IPv4 BGP prefix once a day.
- Spoofer: tests whether the host's network lets out packets with forged source addresses.
- ITDK: the Internet Topology Data Kit, router-level maps of the Internet that CAIDA builds from Ark traceroutes.
All nodes
A star after a node name marks hardware provided by the host. Activities with an arrow link to that node's statistics or to the activity's page. Organization is the AS's organization, from AS Rank.
No nodes match these filters.





