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IP Address Overview

Model: v1 Updated: Jan. 14, 2026, 9:58 a.m.
Report for 216.73.216.121 • 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
216.73.216.121
Total Hits
8193
Organization
Anthropic, PBC
ASN
AS16509 Amazon.com, Inc.
ISP
16509 Amazon.com
Region
Ohio
City
Columbus
Country
United States
Subnet
—
Risk Level
high
First Seen
May 13, 2025, 3 a.m.
Last Seen
July 28, 2025, 3 a.m.
Total Errors
1431
Risk Score
82

Risk

Model: v1 Computed: Jan. 14, 2026, 9:58 a.m.
Risk score
82
High
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 7645 hits 0.00 pts Scan velocity scan_velocity 326 hits 0.00 pts User-Agent anomaly ua 548 hits 0.00 pts Request size anomaly request_size 70 hits 0.00 pts
All contributing signals
Automated client behavior bot 7645 hits 3822.50 pts
Traffic patterns strongly suggest automation rather than a human-operated browser.
Severity Hits Labels Weighted Top labels
10 7645 1 3822.50 n/a
Scan velocity scan_velocity 326 hits 371.52 pts
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
Severity Hits Labels Weighted Top labels
10 152 1 273.60 n/a
12 7 1 15.12 n/a
32 2 1 11.52 n/a
30 2 1 10.80 n/a
28 2 1 10.08 n/a
26 2 1 9.36 n/a
24 2 1 8.64 n/a
22 2 1 7.92 n/a
20 2 1 7.20 n/a
18 2 1 6.48 n/a
16 2 1 5.76 n/a
14 2 1 5.04 n/a
0 147 1 0.00 n/a
User-Agent anomaly ua 548 hits 65.76 pts
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
Severity Hits Labels Weighted Top labels
6 548 1 65.76 n/a
Request size anomaly request_size 70 hits 49.56 pts
Requests are unusually large or shaped in a way that suggests abuse or automation.
Severity Hits Labels Weighted Top labels
14 59 1 49.56 n/a
0 11 1 0.00 n/a
Technical summary
Computed at
Jan. 14, 2026, 9:58 a.m.
Raw total
4309.34
Total hits
8193
Errors
1431

Traffic

Rollup

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

Daily activity (hits per day).
2xx
3425
3xx
2204
4xx
1427
5xx
4
Unique URLs
3976
Total Hits
8193
First Seen
May 13, 2025, 3 a.m.
Last Seen
July 28, 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 7645 pts 3822.50
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 7645 1 3822.50 May 13, 2025, 6:59 a.m. July 27, 2025, 3:02 p.m. —
Scan velocity scan_velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
hits 326 pts 371.52
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
10 152 1 273.60 May 13, 2025, 9:24 a.m. June 24, 2025, 12:33 a.m. —
12 7 1 15.12 May 20, 2025, 2:08 p.m. June 23, 2025, 8:51 p.m. —
32 2 1 11.52 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
30 2 1 10.80 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
28 2 1 10.08 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
26 2 1 9.36 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
24 2 1 8.64 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
22 2 1 7.92 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
20 2 1 7.20 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
18 2 1 6.48 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
16 2 1 5.76 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
14 2 1 5.04 May 20, 2025, 2:08 p.m. May 20, 2025, 2:08 p.m. —
0 147 1 0.00 May 13, 2025, 9:24 a.m. June 24, 2025, 12:33 a.m. —
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 548 pts 65.76
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
6 548 1 65.76 May 25, 2025, midnight July 27, 2025, 1:36 p.m. —
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 70 pts 49.56
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
14 59 1 49.56 June 23, 2025, 7:18 p.m. June 24, 2025, 12:32 a.m. —
0 11 1 0.00 June 23, 2025, 5:54 p.m. July 27, 2025, 12:21 p.m. —

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 IP.

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Subnet footprint

Loading subnet peers…
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