Archipelago Monitor Statistics

Archipelago (Ark): CAIDA's active measurement infrastructure serving the network research community since 2007.
Statistical information for the topology traces taken by this individual Ark monitor is displayed below. See the main statistics page for the full list of monitors


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hel-fi

Helsinki Univ of Technology
Espoo, FI (2)
IPv4 data used (switch to IPv6)
Time range2025-05-19 02:01 to 06:50 UTC (5 hours) (1 day ago)
Total traces49500
Traces with responding destinations5677 (11.469%)
ASes with responding destinations1080 (17.690% out of 6105)
Prefixes with responding destinations3838 (14.658% out of 26183)
Protocol versionv4 (switch to v6)
Generated for cycle 12929 on 2025-05-20 10:43 UTC

All images can be clicked on for more detailed information.

Median RTT per country and US state

Mapping RTT by political boundaries can reveal where high latency issues are located.

Path Dispersion

The paths taken by different traces show where the majority of a monitor's traffic travels.

Path Length Distributions

Path length distributions show, on aggregate, how well-connected a monitor is to the rest of the Internet.