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ASN REPORT — AS16591 · Google Fiber Inc.

First sighted: Oct. 31, 2023, 2 a.m. · Last sighted: Jan. 26, 2026, 1:59 a.m.

Risk
3 (low)
Total hits
3215
Total errors
676
Observed IPs
293
Top country
N/A
Top city
N/A

Risk

Model: v1 Computed: 2026-01-29 10:18:33
Risk score
3
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 420
Points 30.82
Scan velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
scan_velocity
Hits 46
Points 28.98
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 154
Points 14.29
Automated client behavior
Traffic patterns strongly suggest automation rather than a human-operated browser.
bot
Hits 14
Points 6.65

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
1369
3xx
103
4xx
67
5xx
609
Unique URLs
1076
Total hits
3215
First seen
Oct. 31, 2023, 2 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
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 420 pts 30.82
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 412 1 29.66 Jan. 29, 2024, midnight Aug. 6, 2025, 11:15 p.m.
ua 412
10 8 1 1.15 Nov. 7, 2024, 2:25 a.m. Nov. 7, 2024, 2:25 a.m.
ua 8
Scan velocity scan_velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
hits 46 pts 28.98
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 23 1 28.98 Nov. 10, 2024, midnight April 4, 2025, 4:33 p.m.
scan_velocity 23
0 23 1 0.00 Nov. 10, 2024, midnight April 4, 2025, 4:33 p.m.
scan_velocity 23
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 154 pts 14.29
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 23 1 10.76 Jan. 2, 2025, 12:29 a.m. Sept. 28, 2025, 2:41 a.m.
request_size 23
14 6 1 3.53 May 27, 2025, 5:25 p.m. Sept. 30, 2025, 1:58 a.m.
request_size 6
0 125 1 0.00 Jan. 2, 2025, 12:29 a.m. Sept. 30, 2025, 1:57 a.m.
request_size 125
Automated client behavior bot
Traffic patterns strongly suggest automation rather than a human-operated browser.
hits 14 pts 6.65
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 14 1 6.65 Feb. 8, 2025, 10:08 p.m. April 21, 2025, 6:35 a.m.
bot 14

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.