Singapore, Singapore to Ashburn, USA: ICMP RTT measurements with latency, jitter, packet loss, and fiber-efficiency metrics for this long-haul route.

🇸🇬 Singapore (SIN) → 🇺🇸 Ashburn, USA (IAD)

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

For measurement round 2026-08-15T04:03:13Z, ICMP echo RTT from Singapore to Ashburn, USA averaged 210.9 ms, with a minimum of 198.55 ms and a maximum of 237.21 ms across 50 samples. Jitter reached 8.25 ms, the standard deviation was 8.2 ms, and no packets were lost.

Over a geodesic distance of 15,535.9 km, the average is 1.39 times the 152.14 ms fiber-floor estimate, equal to 72.1 percent fiber-floor efficiency. The route ranks 16th out of 19 routes recorded for the same source, and its variability-to-average ratio of about 3.9 percent sits slightly above the 3.08 percent median variability for that route set.

The Fair latency tier and 210.9 ms average align with the long distance, while zero packet loss and a full 50-sample count indicate stable reachability during this round.

Latency Summary

Metric	Value
RTT	210.9 ms
Jitter	8.25 ms
Packet Loss	0%
Standard Fiber Floor	152.14 ms
Fiber Efficiency	72.1%
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: SIN → IAD

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 210.9 ± 1.16 ms (SE)

Sample distribution: box = interquartile range (204.9–214.6 ms), median 209.3 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 (152.1 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	216.78
2	100	221.03
3	200	213.85
4	300	206.35
5	400	214.64
6	500	203.24
7	600	198.55
8	700	211.91
9	800	210.33
10	900	207.24
11	1000	202.61
12	1100	200.90
13	1200	214.49
14	1300	212.44
15	1400	215.65
16	1500	205.44
17	1600	208.66
18	1700	230.75
19	1800	208.47
20	1900	204.66
21	2000	203.93
22	2100	206.19
23	2200	200.43
24	2300	201.04
25	2400	204.70
26	2500	213.82
27	2600	232.54
28	2700	212.11
29	2800	204.64
30	2900	207.82
31	3000	219.01
32	3100	209.92
33	3200	218.47
34	3300	219.45
35	3400	222.79
36	3500	205.49
37	3600	211.17
38	3700	210.25
39	3800	237.21
40	3900	214.07
41	4000	205.79
42	4100	203.55
43	4200	219.51
44	4300	206.84
45	4400	201.33
46	4500	208.06
47	4600	215.44
48	4700	204.10
49	4800	206.17
50	4900	211.17

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 Singapore (1.28967, 103.85007) and Ashburn (39.04372, -77.48749). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	15,535.9 km
Vacuum RTT floor	103.64 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	152.14 ms
Low-latency fiber material floor	151.53 ms
Engineering floor (5% path allowance)	159.77 ms
Research 1.33× mapped-fiber reference	202.35 ms
Estimated unamplified path loss	3262.5 dB
Transparent optical spans / inline amplifiers	204 / 203
Published RTT inflation over fiber floor	1.39×

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	198.55 ms
Average RTT	210.9 ms
Maximum RTT	237.21 ms
Standard deviation	8.2 ms
Stdev / average	3.9%

RTT trend

Estimated route stability across the selected time window.

Average: 210.6 ms
Minimum: 208.8 ms
Maximum: 212.6 ms
Average loss: 0.01%

Route Context

Departure PoP: Singapore (SIN)
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 Singapore latency and RTT — 211 ms

Fastest routes departing Singapore (SIN)

Singapore to Hong Kong latency and RTT — 30.9 ms
Singapore to Taipei latency and RTT — 44.3 ms
Singapore to Tokyo latency and RTT — 69.6 ms
Singapore to Melbourne latency and RTT — 87.8 ms
Singapore to Sydney latency and RTT — 95.3 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
Taipei to Seattle latency and RTT — 115.7 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/sin-iad.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Singapore → 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.

Singapore → Ashburn, USA RTT