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ASN REPORT — AS53813 · ZSCALER, INC.

First sighted: Dec. 16, 2023, 2 a.m. · Last sighted: Oct. 1, 2025, 2:59 a.m.

Risk
3 (low)
Total hits
992
Total errors
128
Observed IPs
45
Top country
N/A
Top city
N/A

Risk

Model: v1 Computed: 2026-01-18 11:54:45
Risk score
3
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 51.96
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 93
Points 6.70
Scan velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
scan_velocity
Hits 10
Points 6.30
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 38
Points 2.82

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
558
3xx
7
4xx
30
5xx
98
Unique URLs
414
Total hits
992
First seen
Dec. 16, 2023, 2 a.m.
Last seen
Oct. 1, 2025, 2:59 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 51.96
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
24 12 1 51.96 March 25, 2025, 8:17 p.m. March 26, 2025, 5:51 a.m.
sensitive_file 12
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 93 pts 6.70
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 93 1 6.70 Nov. 13, 2024, midnight Aug. 28, 2025, 1:43 a.m.
ua 93
Scan velocity scan_velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
hits 10 pts 6.30
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 5 1 6.30 March 26, 2025, midnight Aug. 28, 2025, 1:40 a.m.
scan_velocity 5
0 5 1 0.00 March 26, 2025, midnight Aug. 28, 2025, 1:40 a.m.
scan_velocity 5
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 38 pts 2.82
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
14 4 1 2.35 July 30, 2025, 5:40 a.m. Aug. 28, 2025, 1:41 a.m.
request_size 4
12 1 1 0.47 March 26, 2025, 9:46 a.m. March 26, 2025, 9:46 a.m.
request_size 1
0 33 1 0.00 Jan. 6, 2025, 10:21 a.m. Aug. 28, 2025, 1:40 a.m.
request_size 33

HTTP Status Breakdown

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

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Running one aggregation and rendering the chart.

Geolocation

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

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SUBNETS HELD BY THIS ISP

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

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

No peer rows available for this ASN snapshot.