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

First sighted: Oct. 28, 2024, 2 a.m. · Last sighted: Feb. 23, 2026, 2 a.m.

Risk
88 (high)
Total hits
12178
Total errors
2880
Observed IPs
36
Top country
Czechia
Top city
Praha 10
Top region
Prague

Risk

Model: v1 Computed: 2026-02-27 17:09:49
Risk score
88
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 10236
Points 5118.00
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 1932
Points 231.84

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
9298
3xx
0
4xx
2880
5xx
0
Unique URLs
0
Total hits
12178
First seen
Oct. 28, 2024, 2 a.m.
Last seen
Feb. 23, 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
Automated client behavior bot
Traffic patterns strongly suggest automation rather than a human-operated browser.
hits 10236 pts 5118.00
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 10236 612 5118.00 Oct. 28, 2024, 1:14 p.m. Feb. 22, 2026, 11:44 p.m. —
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 1932 pts 231.84
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 1932 141 231.84 Oct. 29, 2024, 3:36 p.m. Feb. 24, 2025, 12:02 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.

77.75.76.163 high
Open report
100 /100
Last seen 2026-02-12 02:00
Hits
2430
Errors
211
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.54 high
Open report
98 /100
Last seen 2026-02-08 02:00
Hits
2122
Errors
893
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.77.101 med
Open report
58 /100
Last seen 2024-11-14 02:00
Hits
1517
Errors
166
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.168 low
Open report
30 /100
Last seen 2026-02-22 02:00
Hits
1924
Errors
269
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.77.54 low
Open report
28 /100
Last seen 2026-02-23 02:00
Hits
2251
Errors
928
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.77.17 low
Open report
8 /100
Last seen 2026-02-21 02:00
Hits
411
Errors
169
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.162 low
Open report
6 /100
Last seen 2025-08-29 03:00
Hits
168
Errors
130
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.171 low
Open report
6 /100
Last seen 2024-12-10 02:00
Hits
156
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.167 low
Open report
5 /100
Last seen 2026-02-17 02:00
Hits
271
Errors
5
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.166 low
Open report
5 /100
Last seen 2025-08-19 03:00
Hits
79
Errors
38
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.72 low
Open report
5 /100
Last seen 2026-02-06 02:00
Hits
42
Errors
8
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.77.32 low
Open report
3 /100
Last seen 2026-02-21 02:00
Hits
161
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.165 low
Open report
3 /100
Last seen 2026-02-23 02:00
Hits
153
Errors
10
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.171 low
Open report
3 /100
Last seen 2026-02-22 02:00
Hits
138
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.170 low
Open report
3 /100
Last seen 2025-11-27 02:00
Hits
35
Errors
4
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.165 low
Open report
2 /100
Last seen 2026-02-19 02:00
Hits
122
Errors
25
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.164 low
Open report
1 /100
Last seen 2026-02-23 02:00
Hits
33
Errors
6
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.77.95 low
Open report
1 /100
Last seen 2025-10-08 03:00
Hits
15
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.160 low
Open report
1 /100
Last seen 2024-11-28 02:00
Hits
10
Errors
2
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.109 low
Open report
0 /100
Last seen 2026-02-20 02:00
Hits
18
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.17 low
Open report
0 /100
Last seen 2026-02-23 02:00
Hits
17
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.77.109 low
Open report
0 /100
Last seen 2026-02-20 02:00
Hits
13
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.162 low
Open report
0 /100
Last seen 2026-02-22 02:00
Hits
13
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.166 low
Open report
0 /100
Last seen 2026-02-21 02:00
Hits
13
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.36 low
Open report
0 /100
Last seen 2026-02-23 02:00
Hits
12
Errors
3
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.62 low
Open report
0 /100
Last seen 2026-02-23 02:00
Hits
10
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.32 low
Open report
0 /100
Last seen 2026-02-23 02:00
Hits
8
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.170 low
Open report
0 /100
Last seen 2026-02-23 02:00
Hits
7
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.79.95 low
Open report
0 /100
Last seen 2024-11-14 02:00
Hits
7
Errors
2
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.160 low
Open report
0 /100
Last seen 2024-11-20 02:00
Hits
5
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.172 low
Open report
0 /100
Last seen 2026-02-23 02:00
Hits
5
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.77.36 low
Open report
0 /100
Last seen 2026-02-10 02:00
Hits
4
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.167 low
Open report
0 /100
Last seen 2026-02-23 02:00
Hits
3
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.172 low
Open report
0 /100
Last seen 2025-08-04 03:00
Hits
2
Errors
1
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.78.161 low
Open report
0 /100
Last seen 2025-11-07 02:00
Hits
2
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.
77.75.76.161 low
Open report
0 /100
Last seen 2024-12-10 02:00
Hits
1
Errors
0
Country
Czechia
ASN
AS43037
AS Org
Seznam.cz, a.s.