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ASN REPORT — AS53813 · ZSCALER, INC.

First sighted: Dec. 16, 2023, 2 a.m. · Last sighted: Feb. 27, 2026, 2 a.m.

Risk
4 (low)
Total hits
853
Total errors
109
Observed IPs
48
Top country
Singapore
Top city
Whampoa
Top region
Victoria

Risk

Model: v1 Computed: 2026-03-03 19:54:56
Risk score
4
Low
Risk gradient
Key drivers are enriched against the published annotator catalog when available; otherwise sensible defaults are used.
Key drivers
Sensitive file probing
Requests target commonly sensitive files, configs, backups, or administrative resources.
sfp
Hits 12
Points 63.36
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 93
Points 11.16
Scan velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
scan_velocity
Hits 10
Points 9.00
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 40
Points 5.76

Traffic

Rollup

Daily activity (hits per day) and basic HTTP rollup counters for this ASN.

Loading activity…
Daily activity (hits per day). Total in window: —.
Traffic rollup
HTTP status classes, URL diversity, and totals.
2xx
744
3xx
0
4xx
109
5xx
0
Unique URLs
0
Total hits
853
First seen
Dec. 16, 2023, 2 a.m.
Last seen
Feb. 27, 2026, 2 a.m.

Annotators (All-time)

Heatmap of annotator × severity. Darker cells mean more volume in that band. Tip: switch to Weighted points to see what drives impact (not just noise).

Severity →
Low High
Sensitive file probing sfp
Requests target commonly sensitive files, configs, backups, or administrative resources.
hits 12 pts 63.36
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
24 12 2 63.36 March 25, 2025, 8:17 p.m. March 26, 2025, 5:51 a.m. —
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 93 pts 11.16
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 93 7 11.16 Nov. 13, 2024, midnight Aug. 28, 2025, 1:43 a.m. —
Scan velocity scan_velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
hits 10 pts 9.00
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 5 2 9.00 March 26, 2025, midnight Aug. 28, 2025, 1:40 a.m. —
0 5 2 0.00 March 26, 2025, midnight Aug. 28, 2025, 1:40 a.m. —
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 40 pts 5.76
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
14 6 4 5.04 July 30, 2025, 5:40 a.m. Feb. 26, 2026, 11:35 a.m. —
12 1 1 0.72 March 26, 2025, 9:46 a.m. March 26, 2025, 9:46 a.m. —
0 33 10 0.00 Jan. 6, 2025, 10:21 a.m. Aug. 28, 2025, 1:40 a.m. —

HTTP Status Breakdown

Response mix grouped by status class (2xx/3xx/4xx/5xx). Auto-loads a single aggregation and renders a donut.

Loading status mix…
Running one aggregation and rendering the chart.

Geolocation

Live geolocation and map tiles auto-load for this ASN snapshot (peer IPs with coordinates).

Loading map…

SUBNETS HELD BY THIS ISP

Derived from ISP snapshot peers (Option A). Grouped into IPv4 /24 and IPv6 /48 by default.
IPv4
IPv6
Limit
Loading subnets…

Interesting IPs

Top risky peers inside this ASN (latest snapshot). Sorted by risk score, then hits.

147.161.217.93 low
Open report
3 /100
Last seen 2025-03-27 02:00
Hits
163
Errors
75
Country
New Zealand
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.218.245 low
Open report
0 /100
Last seen 2025-08-28 03:00
Hits
70
Errors
1
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.218.176 low
Open report
0 /100
Last seen 2025-03-27 02:00
Hits
45
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.234.196 low
Open report
0 /100
Last seen 2024-11-08 02:00
Hits
44
Errors
0
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.233.33 low
Open report
0 /100
Last seen 2024-11-13 02:00
Hits
43
Errors
18
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.238.122 low
Open report
0 /100
Last seen 2025-05-16 03:00
Hits
30
Errors
1
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.252.252 low
Open report
0 /100
Last seen 2025-03-26 02:00
Hits
29
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.97.33 low
Open report
0 /100
Last seen 2025-04-15 03:00
Hits
29
Errors
0
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.63.98 low
Open report
0 /100
Last seen 2025-08-02 03:00
Hits
26
Errors
0
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.88.100 low
Open report
0 /100
Last seen 2025-03-27 02:00
Hits
25
Errors
3
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.20.83 low
Open report
0 /100
Last seen 2025-03-18 02:00
Hits
24
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.237.105 low
Open report
0 /100
Last seen 2025-03-07 02:00
Hits
21
Errors
0
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.234.119 low
Open report
0 /100
Last seen 2024-02-24 02:00
Hits
19
Errors
3
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.242.245 low
Open report
0 /100
Last seen 2025-02-18 02:00
Hits
18
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.212.80 low
Open report
0 /100
Last seen 2024-02-23 02:00
Hits
18
Errors
2
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.237.83 low
Open report
0 /100
Last seen 2025-03-27 02:00
Hits
17
Errors
2
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.234.84 low
Open report
0 /100
Last seen 2025-01-07 02:00
Hits
15
Errors
0
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.234.171 low
Open report
0 /100
Last seen 2024-11-13 02:00
Hits
15
Errors
0
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.2.173 low
Open report
0 /100
Last seen 2025-07-17 03:00
Hits
15
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.230.184 low
Open report
0 /100
Last seen 2025-04-11 03:00
Hits
14
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.215.27 low
Open report
0 /100
Last seen 2024-11-13 02:00
Hits
14
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.7.0 low
Open report
0 /100
Last seen 2024-11-05 02:00
Hits
13
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.7.28 low
Open report
0 /100
Last seen 2024-10-15 03:00
Hits
13
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.229.35 low
Open report
0 /100
Last seen 2024-05-03 03:00
Hits
12
Errors
1
Country
Hong Kong
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.235.7 low
Open report
0 /100
Last seen 2024-12-17 02:00
Hits
12
Errors
0
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.239.83 low
Open report
0 /100
Last seen 2025-07-31 03:00
Hits
12
Errors
0
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.232.196 low
Open report
0 /100
Last seen 2025-03-28 03:00
Hits
11
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.252.126 low
Open report
0 /100
Last seen 2024-02-08 02:00
Hits
11
Errors
1
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.96.177 low
Open report
0 /100
Last seen 2024-12-05 02:00
Hits
11
Errors
0
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.218.82 low
Open report
0 /100
Last seen 2024-09-06 03:00
Hits
10
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.218.201 low
Open report
0 /100
Last seen 2025-03-27 02:00
Hits
10
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.44.90 low
Open report
0 /100
Last seen 2024-04-16 03:00
Hits
10
Errors
0
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.110.173 low
Open report
0 /100
Last seen 2025-07-31 03:00
Hits
8
Errors
0
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.255.78 low
Open report
0 /100
Last seen 2026-02-27 02:00
Hits
7
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.218.179 low
Open report
0 /100
Last seen 2025-03-27 02:00
Hits
3
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.253.72 low
Open report
0 /100
Last seen 2026-01-23 02:00
Hits
2
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.199.99 low
Open report
0 /100
Last seen 2025-07-31 03:00
Hits
2
Errors
0
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.135.51 low
Open report
0 /100
Last seen 2026-01-21 02:00
Hits
2
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
136.226.231.105 low
Open report
0 /100
Last seen 2026-01-23 02:00
Hits
1
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
147.161.214.123 low
Open report
0 /100
Last seen 2023-12-17 02:00
Hits
1
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.114.72 low
Open report
0 /100
Last seen 2024-05-18 03:00
Hits
1
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.231.91 low
Open report
0 /100
Last seen 2024-10-29 02:00
Hits
1
Errors
0
Country
Singapore
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.233.16 low
Open report
0 /100
Last seen 2024-11-14 02:00
Hits
1
Errors
1
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
165.225.233.27 low
Open report
0 /100
Last seen 2024-11-14 02:00
Hits
1
Errors
0
Country
Australia
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.43.18 low
Open report
0 /100
Last seen 2025-07-31 03:00
Hits
1
Errors
0
Country
Japan
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.88.98 low
Open report
0 /100
Last seen 2025-10-01 03:00
Hits
1
Errors
1
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.120.170 low
Open report
0 /100
Last seen 2026-02-05 02:00
Hits
1
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.
167.103.120.188 low
Open report
0 /100
Last seen 2026-02-18 02:00
Hits
1
Errors
0
Country
India
ASN
AS53813
AS Org
ZSCALER, INC.