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

lgw2-uk

Clouvider
London, UK (8)

Time range	2025-02-03 06:00 to 11:03 UTC (5 hours) (1 day ago)
Total traces	57000
Traces with responding destinations	6587 (11.556%)
ASes with responding destinations	1168 (17.524% out of 6665)
Prefixes with responding destinations	4440 (15.218% out of 29176)
Protocol version	v4

Generated for cycle 12418 on 2025-02-04 10:59 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.

Median RTT per country and US state

Path Dispersion

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

AS Path Dispersion (by AS Hop)

AS connectivity near monitor

AS Path Dispersion (by IP Hop)

AS connectivity near monitor (with IP hop distances preserved)

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.

CCDF of IP path lengths for responding destinations


percentile	10th	25th	50th	75th	90th	Max
IP path length	8	10	12	14	17	26

CCDF of AS path lengths for responding destinations


percentile	10th	25th	50th	75th	90th	Max
AS path length	4	4	5	5	6	11

CCDF of IP path lengths for non-responding destinations

percentile 10th 25th 50th 75th 90th Max

IP path length 3 5 8 11 13 32
CCDF of AS path lengths for non-responding destinations

percentile 10th 25th 50th 75th 90th Max

AS path length 3 3 4 4 5 11

RTT Distribution

An RTT distribution shows the general latency between a monitor and the rest of the Internet.

CCDF of destination RTTs

percentile 10th 25th 50th 75th 90th

RTT (ms) 21.737 53.829 122.834 227.048 261.939
RTT quartiles vs hop distance


percentile	10th	25th	50th	75th	90th
RTT (ms)	21.737	53.829	122.834	227.048	261.939

RTTs vs. Distance

Comparing RTT with geographical distance helps show if latency is primarily due to distance or other factors.

RTT density versus geographical distance
RTT quartiles versus geographical distance