ICMP round-trip time measurements from Johannesburg, South Africa to Taipei, Taiwan: 329.8 ms average, zero loss, jitter and route efficiency context.

🇿🇦 Johannesburg, South Africa (JNB) → 🇹🇼 Taipei, Taiwan (TPE)

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

The 2026-08-16T04:07:28Z ICMP echo RTT measurement from Johannesburg, South Africa to Taipei, Taiwan returned a 329.8 ms average over 50 samples, with the minimum at 316.93 ms and the maximum at 358.31 ms. Packet loss was 0%, and the 9.77 ms standard deviation produced 9.42 ms jitter, putting this high-latency path on the stable side.

The great-circle distance between the two cities is 11,525.4 km, for which the vacuum floor is 76.89 ms and the ideal fiber path is 112.87 ms. The measured 329.8 ms average is 2.92 times that fiber floor, so the route's fiber efficiency is 34.2% - a reminder that intercontinental RTT carries far more than the straight-line distance.

In the current outbound group of 19 routes, this route is ranked 16th. Its standard deviation equals roughly 2.96% of the average, below the group's 3.28% median variability, and the narrow 41.38 ms min-to-max spread reinforces that the latency is consistent even though it is high.

Latency Summary

Metric	Value
RTT	329.8 ms
Jitter	9.42 ms
Packet Loss	0%
Standard Fiber Floor	112.87 ms
Fiber Efficiency	34.2%
Latency Tier	High
Source Region	Africa
Destination Region	Asia Pacific

Ping Measurement Series

The chart below renders the 50-sample ICMP echo measurement round for this route; an accessible table of every sample is included with the chart.

Ping series: JNB → TPE

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 329.8 ± 1.38 ms (SE)

Sample distribution: box = interquartile range (322.2–333.3 ms), median 327.5 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 (112.9 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	326.88
2	100	331.37
3	200	344.85
4	300	330.04
5	400	320.48
6	500	316.93
7	600	320.18
8	700	329.33
9	800	326.33
10	900	333.44
11	1000	338.48
12	1100	330.53
13	1200	322.54
14	1300	328.89
15	1400	323.18
16	1500	338.11
17	1600	347.46
18	1700	328.69
19	1800	326.49
20	1900	322.29
21	2000	323.23
22	2100	357.37
23	2200	332.85
24	2300	324.03
25	2400	322.11
26	2500	328.03
27	2600	324.99
28	2700	321.54
29	2800	327.90
30	2900	326.03
31	3000	319.16
32	3100	322.09
33	3200	327.17
34	3300	337.53
35	3400	329.65
36	3500	321.55
37	3600	319.86
38	3700	319.04
39	3800	358.31
40	3900	337.38
41	4000	338.00
42	4100	332.37
43	4200	321.25
44	4300	336.76
45	4400	330.40
46	4500	321.64
47	4600	355.19
48	4700	341.22
49	4800	325.69
50	4900	321.17

Download This Route's Data

This route's measurement round is published as open data (CC BY 4.0) in CSV, JSON, and YAML. See About This Measurement for citation guidance.

Download this dataset

Per-route ICMP ping series, released under CC BY 4.0. Uncompressed plain text — no decompression step needed.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for Johannesburg (-26.20227, 28.04363) and Taipei (25.05306, 121.52639). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	11,525.4 km
Vacuum RTT floor	76.89 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	112.87 ms
Low-latency fiber material floor	112.41 ms
Engineering floor (5% path allowance)	118.52 ms
Research 1.33× mapped-fiber reference	150.11 ms
Estimated unamplified path loss	2420.3 dB
Transparent optical spans / inline amplifiers	152 / 151
Published RTT inflation over fiber floor	2.92×

Attenuation is used to estimate the number of 80 km optical spans; it does not directly slow light. See the full theoretical fiber latency, GeoNames, attenuation, and amplifier methodology.

Stability & Trend

The current measurement round (2026-08-16T04:07:28Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	316.93 ms
Average RTT	329.8 ms
Maximum RTT	358.31 ms
Standard deviation	9.77 ms
Stdev / average	3.0%

RTT trend

Estimated route stability across the selected time window.

Average: 329.6 ms
Minimum: 326.8 ms
Maximum: 332.6 ms
Average loss: 0.02%

Route Context

Departure PoP: Johannesburg (JNB)
Destination PoP: Taipei (TPE)
Region overview: Africa → Asia Pacific
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Taipei to Johannesburg latency and RTT — 331 ms

Fastest routes departing Johannesburg (JNB)

Johannesburg to London latency and RTT — 158 ms
Johannesburg to Amsterdam latency and RTT — 163.2 ms
Johannesburg to Paris latency and RTT — 164.4 ms
Johannesburg to Frankfurt latency and RTT — 166 ms
Johannesburg to Marseille latency and RTT — 172 ms

Fastest routes arriving at Taipei (TPE)

Hong Kong to Taipei latency and RTT — 14.7 ms
Tokyo to Taipei latency and RTT — 32.3 ms
Singapore to Taipei latency and RTT — 45.8 ms
Seattle to Taipei latency and RTT — 114.7 ms
Sydney to Taipei latency and RTT — 131.7 ms

Same corridor (Africa → Asia Pacific)

Johannesburg to Singapore latency and RTT — 311.6 ms
Johannesburg to Hong Kong latency and RTT — 318 ms
Johannesburg to Tokyo latency and RTT — 360.5 ms

About This Measurement

Published RTT reflects best-case backbone path behavior measured with ICMP echo probes between PoPs. End-user latency also depends on local access networks, congestion, routing policy, and traffic engineering. None of these values is an SLA.

The measurement round behind this page is published as open data under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/jnb-tpe.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Johannesburg → Taipei round 2026-08-16T04:07:28Z, CC BY 4.0".

Data auto-generated on August 16, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Johannesburg, South Africa → Taipei, Taiwan RTT