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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| Time range | 2026-08-18 05:08 to 2026-08-19 04:13 UTC (23 hours) |
| Total traces | 509358 |
| Traces with responding destinations | 4522 (0.888%) |
| ASes with responding destinations | 1545 (4.192% out of 36853) |
| Prefixes with responding destinations | 3981 (1.612% out of 246946) |
| Protocol version | v6 (switch to v4) |
Generated for cycle 20260818 on 2026-08-19 10:22 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.
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AS Path Dispersion (by AS Hop)
AS connectivity near monitor
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AS Path Dispersion (by IP Hop)
AS connectivity near monitor (with IP hop distances preserved)
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IP Path Dispersion (by IP Hop)
IP connectivity near monitor
Path Length Distributions
Path length distributions show, on aggregate, how well-connected a monitor is to the rest of the Internet.
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CCDF of IP path lengths for responding destinations
percentile 10th 25th 50th 75th 90th Max IP path length 4 5 6 6 6 8 
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CCDF of AS path lengths for responding destinations
percentile 10th 25th 50th 75th 90th Max AS path length 3 3 3 3 3 3 
RTT Distribution
An RTT distribution shows the general latency between a monitor and the rest of the Internet.
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CCDF of destination RTTs
percentile 10th 25th 50th 75th 90th RTT (ms) 6.083 8.579 12.602 46.113 165.316 
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RTT quartiles vs hop distance
RTTs vs. Distance
Comparing RTT with geographical distance helps show if latency is primarily due to distance or other factors.
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RTT density versus geographical distance
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RTT quartiles versus geographical distance
