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ASN REPORT — AS43037 · Seznam.cz, a.s.

First sighted: Oct. 28, 2024, 2 a.m. · Last sighted: Jan. 11, 2026, 1:59 a.m.

Risk
86 (high)
Total hits
23654
Total errors
5724
Observed IPs
441
Top country
N/A
Top city
N/A

Risk

Model: v1 Computed: 2026-01-18 11:53:44
Risk score
86
High
Risk gradient
Key drivers are enriched against the published annotator catalog when available; otherwise sensible defaults are used.
Key drivers
Automated client behavior
Traffic patterns strongly suggest automation rather than a human-operated browser.
bot
Hits 9895
Points 4700.12
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 1932
Points 139.10

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
13822
3xx
244
4xx
5632
5xx
92
Unique URLs
7632
Total hits
23654
First seen
Oct. 28, 2024, 2 a.m.
Last seen
Jan. 11, 2026, 1:59 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
Automated client behavior bot
Traffic patterns strongly suggest automation rather than a human-operated browser.
hits 9895 pts 4700.12
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 9895 1 4700.12 Oct. 28, 2024, 1:14 p.m. Jan. 10, 2026, 4:11 a.m.
bot 9895
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 1932 pts 139.10
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 1932 1 139.10 Oct. 29, 2024, 3:36 p.m. Feb. 24, 2025, 12:02 a.m.
ua 1932

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).

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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.