Archipelago (Ark): CAIDA's active measurement infrastructure serving the network research community since 2007.

|   Ark Home Page    The Ark Platform    Topology Datasets    Have you received an Ark probe?   |

|   Ark Monitors:    Hosting an Ark Monitor    Locations    Data Coverage    Statistics   |

---

Prev monitor: gva-ch

Prev in Europe: gva-ch

Next monitor: hkg-cn

Next in Europe: iev-ua

To main statistics page

hel-fi

TKK

Espoo, FI

IPv6 data used (switch to IPv4)

Time range	2019-10-01 19:43 to 2019-10-02 08:42 UTC (13 hours) (581 days ago)
Total traces	167950
Traces with responding destinations	18517 (11.025%)
ASes with responding destinations	6403 (36.096% out of 17739)
Prefixes with responding destinations	16143 (22.185% out of 72767)
Protocol version	v6 (switch to v4)

Generated for cycle 298 on 2019-10-02 09:11 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	9	10	13	16	19	30

  
• CCDF of AS path lengths for responding destinations

  percentile	10th	25th	50th	75th	90th	Max
  AS path length	4	5	6	6	7	17

  
• CCDF of IP path lengths for non-responding destinations

  percentile	10th	25th	50th	75th	90th	Max
  IP path length	8	10	13	16	19	36

  
• CCDF of AS path lengths for non-responding destinations

  percentile	10th	25th	50th	75th	90th	Max
  AS path length	4	4	5	6	7	15

  

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)	28.171	44.581	143.386	231.511	304.060

  
• 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.

• RTT density versus geographical distance
  
• RTT quartiles versus geographical distance