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ASN REPORT — AS16135 · Turkcell A.S.

First sighted: Sept. 26, 2023, 3 a.m. · Last sighted: Jan. 26, 2026, 1:59 a.m.

Risk
2 (low)
Total hits
355
Total errors
60
Observed IPs
88
Top country
N/A
Top city
N/A

Risk

Model: v1 Computed: 2026-01-29 10:18:33
Risk score
2
Low
Risk gradient
Key drivers are enriched against the published annotator catalog when available; otherwise sensible defaults are used.
Key drivers
Credential brute forcing
Repeated authentication attempts consistent with password guessing or credential stuffing.
cred
Hits 17
Points 51.92
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 48
Points 4.42
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 13
Points 2.34

Traffic

Rollup

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

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Daily activity (hits per day). Total in window: —.
Traffic rollup
HTTP status classes, URL diversity, and totals.
2xx
177
3xx
53
4xx
52
5xx
8
Unique URLs
202
Total hits
355
First seen
Sept. 26, 2023, 3 a.m.
Last seen
Jan. 26, 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
Credential brute forcing cred
Repeated authentication attempts consistent with password guessing or credential stuffing.
hits 17 pts 51.92
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 7 1 27.17 Dec. 20, 2023, 3:20 p.m. Oct. 14, 2024, 10:33 p.m.
cred 7
12 5 1 24.75 Dec. 20, 2023, 3:20 p.m. Oct. 14, 2024, 10:33 p.m.
cred 5
0 5 1 0.00 Dec. 20, 2023, 3:20 p.m. Oct. 14, 2024, 10:33 p.m.
cred 5
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 48 pts 4.42
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
8 18 1 1.87 March 12, 2025, 7:04 a.m. Oct. 4, 2025, 1:15 p.m.
ua 18
6 26 1 1.87 Dec. 17, 2024, 9:50 p.m. Sept. 19, 2025, 5:13 a.m.
ua 26
12 4 1 0.67 Nov. 23, 2024, 1:25 p.m. Nov. 23, 2024, 1:26 p.m.
ua 4
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 13 pts 2.34
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 5 1 2.34 April 1, 2025, 10:31 a.m. Aug. 1, 2025, 7:47 p.m.
request_size 5
0 8 1 0.00 Jan. 4, 2025, 8:38 p.m. Oct. 11, 2025, 8:49 a.m.
request_size 8

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.