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IP Address Overview

Model: v1 Updated: Jan. 14, 2026, 9:58 a.m.
Report for 216.73.216.21 • United States • Anthropic, PBC

High-level context about this IP: ownership, geography, and traffic profile.

Traffic ready Risk ready Report ready Model v1
IP Address
216.73.216.21
Total Hits
2579
Organization
Anthropic, PBC
ASN
AS16509 Amazon.com, Inc.
ISP
16509 Amazon.com
Region
Ohio
City
Columbus
Country
United States
Subnet
—
Risk Level
med
First Seen
May 13, 2025, 3 a.m.
Last Seen
Aug. 15, 2025, 3 a.m.
Total Errors
96
Risk Score
42

Risk

Model: v1 Computed: Jan. 14, 2026, 9:58 a.m.
Risk score
42
Medium
Risk gradient
Contributor codes are normalized (e.g. sqli, cmdi, trav, sfp). Totals and breakdowns are derived from rollups and explainability tables only.
Top contributing annotators
Automated client behavior bot 2567 hits 0.00 pts Scan velocity scan_velocity 66 hits 0.00 pts User-Agent anomaly ua 12 hits 0.00 pts Request size anomaly request_size 1 hits 0.00 pts
All contributing signals
Automated client behavior bot 2567 hits 1283.50 pts
Traffic patterns strongly suggest automation rather than a human-operated browser.
Severity Hits Labels Weighted Top labels
10 2567 1 1283.50 n/a
Scan velocity scan_velocity 66 hits 70.56 pts
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
Severity Hits Labels Weighted Top labels
10 34 1 61.20 n/a
14 2 1 5.04 n/a
12 2 1 4.32 n/a
0 28 1 0.00 n/a
User-Agent anomaly ua 12 hits 1.44 pts
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
Severity Hits Labels Weighted Top labels
6 12 1 1.44 n/a
Request size anomaly request_size 1 hits 0.84 pts
Requests are unusually large or shaped in a way that suggests abuse or automation.
Severity Hits Labels Weighted Top labels
14 1 1 0.84 n/a
Technical summary
Computed at
Jan. 14, 2026, 9:58 a.m.
Raw total
1356.34
Total hits
2579
Errors
96

Traffic

Rollup

Daily activity (hits per day) plus HTTP response mix and basic counters from the traffic rollup.

Daily activity (hits per day).
2xx
1320
3xx
1135
4xx
96
5xx
0
Unique URLs
1606
Total Hits
2579
First Seen
May 13, 2025, 3 a.m.
Last Seen
Aug. 15, 2025, 3 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 2567 pts 1283.50
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration. Hover labels for quick scans; expand for the full table.
Severity Total Labels Weighted First seen Last seen Top labels
10 2567 1 1283.50 May 13, 2025, 7:50 p.m. Aug. 15, 2025, 1:06 a.m. —
Scan velocity scan_velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
hits 66 pts 70.56
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration. Hover labels for quick scans; expand for the full table.
Severity Total Labels Weighted First seen Last seen Top labels
10 34 1 61.20 May 16, 2025, 1:50 a.m. May 25, 2025, 10:23 p.m. —
14 2 1 5.04 May 19, 2025, 1:52 a.m. May 19, 2025, 1:52 a.m. —
12 2 1 4.32 May 19, 2025, 1:52 a.m. May 19, 2025, 1:52 a.m. —
0 28 1 0.00 May 16, 2025, 1:50 a.m. May 25, 2025, 10:23 p.m. —
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 12 pts 1.44
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration. Hover labels for quick scans; expand for the full table.
Severity Total Labels Weighted First seen Last seen Top labels
6 12 1 1.44 Aug. 14, 2025, 9:02 p.m. Aug. 14, 2025, 9:50 p.m. —
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 1 pts 0.84
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration. Hover labels for quick scans; expand for the full table.
Severity Total Labels Weighted First seen Last seen Top labels
14 1 1 0.84 Aug. 14, 2025, 9:50 p.m. Aug. 14, 2025, 9:50 p.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 IP.

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Subnet footprint

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Next step

Explore the annotated logs

Open the Log Explorer to review individual access events, annotator decisions, labels, and supporting details (UA / referer / rule ids) in a paginated, filterable view.

Open Log Explorer → Last 7 Days