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ASN REPORT — AS18881 · TELEFÔNICA BRASIL S.A

First sighted: July 12, 2023, 3 a.m. · Last sighted: Jan. 26, 2026, 1:59 a.m.

Risk
7 (low)
Total hits
12156
Total errors
1960
Observed IPs
8813
Top country
N/A
Top city
N/A

Risk

Model: v1 Computed: 2026-01-29 10:18:33
Risk score
7
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 44
Points 134.20
Sensitive file probing
Requests target commonly sensitive files, configs, backups, or administrative resources.
sfp
Hits 3
Points 24.29
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 94
Points 8.66
Protocol anomaly
Request structure or protocol-level signals deviate from typical browser HTTP traffic.
proto
Hits 4
Points 2.76
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 25
Points 2.46

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
4971
3xx
5104
4xx
1687
5xx
273
Unique URLs
11113
Total hits
12156
First seen
July 12, 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 44 pts 134.20
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 18 1 69.85 Dec. 20, 2023, 3:16 p.m. April 30, 2024, 4:57 p.m.
cred 18
12 13 1 64.35 Dec. 20, 2023, 3:16 p.m. April 30, 2024, 4:57 p.m.
cred 13
0 13 1 0.00 Dec. 20, 2023, 3:16 p.m. April 30, 2024, 4:57 p.m.
cred 13
Sensitive file probing sfp
Requests target commonly sensitive files, configs, backups, or administrative resources.
hits 3 pts 24.29
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
40 3 1 24.29 Jan. 21, 2026, 2:12 p.m. Jan. 23, 2026, 10:23 a.m.
sensitive_file 3
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 94 pts 8.66
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
8 53 1 5.51 July 12, 2023, 5:26 a.m. Nov. 6, 2025, 11:52 p.m.
ua 53
6 39 1 2.81 Sept. 18, 2024, 3:37 p.m. Nov. 28, 2025, 6:36 a.m.
ua 39
12 2 1 0.34 Jan. 28, 2025, 3:09 p.m. Jan. 28, 2025, 3:09 p.m.
ua 2
Protocol anomaly proto
Request structure or protocol-level signals deviate from typical browser HTTP traffic.
hits 4 pts 2.76
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 4 1 2.76 June 20, 2025, 7:25 p.m. June 21, 2025, 9:10 a.m.
proto 4
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 25 pts 2.46
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 4 1 1.87 Jan. 11, 2025, 9:49 p.m. July 31, 2025, 7:39 p.m.
request_size 4
14 1 1 0.59 Nov. 25, 2025, 3:38 p.m. Nov. 25, 2025, 3:38 p.m.
request_size 1
0 20 1 0.00 Jan. 11, 2025, 9:49 p.m. Oct. 11, 2025, 6:48 p.m.
request_size 20

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.