ICMP RTT measurement from Taipei, Taiwan to Ashburn, USA: average latency, packet loss, jitter, and route stability for this trans-Pacific route.

🇹🇼 Taipei, Taiwan (TPE) → 🇺🇸 Ashburn, USA (IAD)

Measurement round: 2026-08-15T04:03:13Z.

The 173.2 ms average ICMP echo RTT recorded in round 2026-08-15T04:03:13Z places Taipei-to-Ashburn in the Fair tier, with all 50 samples completing and no packet loss. The 169.52 ms minimum and 184.08 ms maximum frame a 14.56 ms spread, and the 2.23 ms jitter figure points to a stable trans-Pacific crossing even though the route ranks 13th among the 19 outbound paths measured.

In physical terms, the 12,639.6 km geodesic distance sets a vacuum floor of 84.32 ms and a more realistic fiber floor of 123.78 ms. The observed average sits 1.4 times above that fiber floor, a fiber efficiency of 71.5 percent; the route therefore carries a meaningful amount of additional latency beyond the geographic minimum but does so without loss or erratic variation.

Compared with the network's median standard-deviation-to-average ratio of 3.08 percent, the route's 3.78 ms standard deviation is about 2.18 percent of the average, so timing is more consistent than the network-wide median suggests. With 19 outbound routes in the set and this one ranked 13th, the headline insight is reliability over rank: users are likely to see predictable round-trip times rather than outliers, despite the Fair-tier average.

Latency Summary

Metric	Value
RTT	173.2 ms
Jitter	2.23 ms
Packet Loss	0%
Standard Fiber Floor	123.78 ms
Fiber Efficiency	71.5%
Latency Tier	Fair
Source Region	Asia Pacific
Destination Region	North America

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: TPE → IAD

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 173.2 ± 0.53 ms (SE)

Sample distribution: box = interquartile range (170.5–174.7 ms), median 171.4 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 (123.8 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	183.25
2	100	175.36
3	200	171.37
4	300	171.19
5	400	170.59
6	500	170.50
7	600	173.87
8	700	171.16
9	800	169.88
10	900	170.31
11	1000	169.52
12	1100	170.65
13	1200	169.97
14	1300	170.61
15	1400	171.88
16	1500	179.13
17	1600	174.63
18	1700	175.05
19	1800	171.18
20	1900	170.64
21	2000	175.04
22	2100	172.19
23	2200	170.19
24	2300	174.67
25	2400	172.88
26	2500	170.49
27	2600	170.39
28	2700	170.81
29	2800	171.41
30	2900	170.66
31	3000	170.38
32	3100	170.48
33	3200	169.92
34	3300	171.91
35	3400	170.11
36	3500	172.35
37	3600	171.30
38	3700	172.15
39	3800	170.31
40	3900	171.18
41	4000	175.60
42	4100	180.47
43	4200	174.18
44	4300	174.68
45	4400	172.72
46	4500	177.59
47	4600	181.95
48	4700	184.08
49	4800	182.10
50	4900	177.07

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 Taipei (25.05306, 121.52639) and Ashburn (39.04372, -77.48749). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	12,639.6 km
Vacuum RTT floor	84.32 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	123.78 ms
Low-latency fiber material floor	123.28 ms
Engineering floor (5% path allowance)	129.98 ms
Research 1.33× mapped-fiber reference	164.62 ms
Estimated unamplified path loss	2654.3 dB
Transparent optical spans / inline amplifiers	166 / 165
Published RTT inflation over fiber floor	1.4×

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 (2026-08-15T04:03:13Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	169.52 ms
Average RTT	173.2 ms
Maximum RTT	184.08 ms
Standard deviation	3.78 ms
Stdev / average	2.2%

RTT trend

Estimated route stability across the selected time window.

Average: 173.4 ms
Minimum: 171.9 ms
Maximum: 174.7 ms
Average loss: 0.02%

Route Context

Departure PoP: Taipei (TPE)
Destination PoP: Ashburn (IAD)
Region overview: Asia Pacific → North America
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Ashburn to Taipei latency and RTT — 172 ms

Fastest routes departing Taipei (TPE)

Taipei to Hong Kong latency and RTT — 15.4 ms
Taipei to Tokyo latency and RTT — 31.6 ms
Taipei to Singapore latency and RTT — 44.2 ms
Taipei to Seattle latency and RTT — 115.7 ms
Taipei to Moscow latency and RTT — 131.7 ms

Fastest routes arriving at Ashburn (IAD)

New York to Ashburn latency and RTT — 6 ms
Miami to Ashburn latency and RTT — 27.3 ms
Los Angeles to Ashburn latency and RTT — 59.9 ms
Seattle to Ashburn latency and RTT — 62 ms
London to Ashburn latency and RTT — 71.3 ms

Same corridor (Asia Pacific → North America)

Tokyo to Seattle latency and RTT — 84.6 ms
Tokyo to Los Angeles latency and RTT — 101.5 ms
Hong Kong to Seattle latency and RTT — 129.9 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/tpe-iad.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Taipei → Ashburn round 2026-08-15T04:03:13Z, CC BY 4.0".

Data auto-generated on August 15, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Taipei, Taiwan → Ashburn, USA RTT