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ASN REPORT — AS1103 · SURF B.V.

First sighted: July 24, 2023, 3 a.m. · Last sighted: Feb. 18, 2026, 2 a.m.

Risk
0 (low)
Total hits
175
Total errors
14
Observed IPs
18
Top country
The Netherlands
Top city
Wageningen
Top region
Utrecht

Risk

Model: v1 Computed: 2026-02-27 17:09:49
Risk score
Low
Risk gradient
Key drivers are enriched against the published annotator catalog when available; otherwise sensible defaults are used.
Key drivers
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 16
Points 1.92
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 26
Points

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
161
3xx
0
4xx
14
5xx
0
Unique URLs
0
Total hits
175
First seen
July 24, 2023, 3 a.m.
Last seen
Feb. 18, 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
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 16 pts 1.92
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 16 10 1.92 July 25, 2023, 4:28 a.m. Oct. 7, 2025, 11:58 a.m. —
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 26 pts 0.00
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
0 26 6 0.00 Jan. 6, 2025, 1:47 p.m. Oct. 7, 2025, 11:36 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).

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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
Loading subnets…

Interesting IPs

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

145.89.224.245 low
Open report
0 /100
Last seen 2025-09-18 03:00
Hits
36
Errors
0
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.103.114.140 low
Open report
0 /100
Last seen 2025-01-15 02:00
Hits
23
Errors
3
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.102.242.189 low
Open report
0 /100
Last seen 2025-10-08 03:00
Hits
16
Errors
0
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.107.80.107 low
Open report
0 /100
Last seen 2024-01-03 02:00
Hits
16
Errors
2
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
194.171.198.38 low
Open report
0 /100
Last seen 2025-02-08 02:00
Hits
16
Errors
0
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.102.172.39 low
Open report
0 /100
Last seen 2025-01-07 02:00
Hits
15
Errors
0
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.118.198.128 low
Open report
0 /100
Last seen 2025-04-08 03:00
Hits
15
Errors
0
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.52.152.212 low
Open report
0 /100
Last seen 2024-12-10 02:00
Hits
11
Errors
0
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.90.8.11 low
Open report
0 /100
Last seen 2025-11-16 02:00
Hits
10
Errors
1
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
130.37.198.74 low
Open report
0 /100
Last seen 2023-07-26 03:00
Hits
4
Errors
1
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.103.246.237 low
Open report
0 /100
Last seen 2024-11-28 02:00
Hits
3
Errors
2
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
137.224.252.37 low
Open report
0 /100
Last seen 2024-12-07 02:00
Hits
2
Errors
1
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.97.190.9 low
Open report
0 /100
Last seen 2024-05-15 03:00
Hits
2
Errors
1
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.103.60.111 low
Open report
0 /100
Last seen 2024-06-04 03:00
Hits
2
Errors
1
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
129.125.165.35 low
Open report
0 /100
Last seen 2026-02-13 02:00
Hits
1
Errors
0
Country
Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.33.154.16 low
Open report
0 /100
Last seen 2026-02-18 02:00
Hits
1
Errors
0
Country
Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.118.230.196 low
Open report
0 /100
Last seen 2026-02-07 02:00
Hits
1
Errors
1
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.
145.144.148.97 low
Open report
0 /100
Last seen 2026-02-05 02:00
Hits
1
Errors
1
Country
The Netherlands
ASN
AS1103
AS Org
SURF B.V.