Explore Taipei, Taiwan to London, UK ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network. View route data.

🇹🇼 Taipei, Taiwan (TPE) → 🇬🇧 London, UK (LON)

Measurement round: 2026-08-16T04:07:28Z.

Taipei to London averaged 173 ms across 50 replies. The observed range was 165.18 to 197.84 ms; these figures describe one probe round, not a long-term service target.

Standard deviation was 6.02 ms, or 3.5% of the average. This describes variation within the sample without identifying its cause.

Latency Summary

Metric	Value
RTT	173 ms
Jitter	4.56 ms
Packet Loss	0%
Standard Fiber Floor	95.97 ms
Fiber Efficiency	55.5%
Latency Tier	Fair
Source Region	Asia Pacific
Destination Region	Europe

Ping Measurement Series

50 ICMP echo probes were recorded in this round. Individual replies and their distribution are shown below.

Ping series: TPE → LON

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 173.0 ± 0.85 ms (SE)

Sample distribution: box = interquartile range (168.5–176.1 ms), median 171.8 ms · whiskers = min–max · diamond = round average · each dot is one measured sample.

How to read this chart

The shaded band spans the measured minimum to maximum RTT of all samples collected up to that point, and the thin line traces the running average. The final position therefore matches the round statistics exactly. The band only widens when a new extreme sample arrives.

The dashed line is the round average, and the shaded band at the bottom is the theoretical fiber-optic floor (96.0 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	176.46
2	100	173.39
3	200	174.30
4	300	174.82
5	400	170.33
6	500	171.76
7	600	171.22
8	700	185.05
9	800	175.39
10	900	179.05
11	1000	179.97
12	1100	174.19
13	1200	170.69
14	1300	171.07
15	1400	167.87
16	1500	170.84
17	1600	173.56
18	1700	176.06
19	1800	171.26
20	1900	171.52
21	2000	178.24
22	2100	176.64
23	2200	168.21
24	2300	169.61
25	2400	181.06
26	2500	176.31
27	2600	173.70
28	2700	167.15
29	2800	166.80
30	2900	165.47
31	3000	197.84
32	3100	187.27
33	3200	176.03
34	3300	176.68
35	3400	171.82
36	3500	166.52
37	3600	173.21
38	3700	176.12
39	3800	169.21
40	3900	169.03
41	4000	173.10
42	4100	167.11
43	4200	168.01
44	4300	165.94
45	4400	171.19
46	4500	167.63
47	4600	165.18
48	4700	165.52
49	4800	168.37
50	4900	172.23

Download This Route's Data

Download the probe round as CSV, JSON or YAML under CC BY 4.0. Citation details include the route and round timestamp.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The propagation model uses public city-centre coordinates from GeoNames: Taipei (25.05306, 121.52639) and London (51.50853, -0.12574). These are not facility coordinates or a surveyed cable path.

Physical Reference	Value
WGS-84 geodesic distance	9,799.7 km
Vacuum RTT floor	65.38 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	95.97 ms
Low-latency fiber material floor	95.58 ms
Engineering floor (5% path allowance)	100.78 ms
Research 1.33× mapped-fiber reference	127.63 ms
Estimated unamplified path loss	2057.9 dB
Transparent optical spans / inline amplifiers	129 / 128
Published RTT inflation over fiber floor	1.8×

The span count assumes 80 km optical spans. Attenuation is a power-loss term, not a propagation delay. See the model assumptions and equations.

Stability & Trend

Statistics from the same 50 replies. They describe this probe round, not continuous historical monitoring.

Round Statistic	Value
Minimum RTT	165.18 ms
Average RTT	173 ms
Maximum RTT	197.84 ms
Standard deviation	6.02 ms
Stdev / average	3.5%

Estimated RTT trend

Modeled comparison, not historical probe measurements.

Average: 173.0 ms
Minimum: 171.3 ms
Maximum: 174.6 ms
Average loss: 0.03%

Route Context

Departure PoP: Taipei (TPE)
Destination PoP: London (LON)
Region overview: Asia Pacific → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

London to Taipei latency and RTT: 173.8 ms

Fastest routes departing Taipei (TPE)

Taipei to Hong Kong latency and RTT: 15.5 ms
Taipei to Tokyo latency and RTT: 31.9 ms
Taipei to Singapore latency and RTT: 44.3 ms
Taipei to Seattle latency and RTT: 115.8 ms
Taipei to Los Angeles latency and RTT: 132 ms

Fastest routes arriving at London (LON)

Amsterdam to London latency and RTT: 5.2 ms
Paris to London latency and RTT: 6.4 ms
Frankfurt to London latency and RTT: 12.9 ms
Berlin to London latency and RTT: 15.2 ms
Marseille to London latency and RTT: 18.9 ms

Same corridor (Asia Pacific → Europe)

Hong Kong to Moscow latency and RTT: 118.2 ms
Taipei to Moscow latency and RTT: 132.7 ms
Singapore to Marseille latency and RTT: 140.6 ms

About This Measurement

These ICMP measurements cover the two backbone endpoints. Access networks, routing policy and load can change an end user's result. A probe round is not an SLA.

The underlying replies are available under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/tpe-lon.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, Taipei → London round 2026-08-16T04:07:28Z, CC BY 4.0".

Round published August 16, 2026. See the full interactive latency matrix or browse more city-pair routes.

Taipei, Taiwan → London, UK RTT