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ASN REPORT — AS4837 · CHINA UNICOM China169 Backbone

First sighted: April 30, 2023, 3 a.m. · Last sighted: Jan. 11, 2026, 1:59 a.m.

Risk
99 (high)
Total hits
51323
Total errors
7589
Observed IPs
8543
Top country
N/A
Top city
N/A

Risk

Model: v1 Computed: 2026-01-18 11:55:27
Risk score
99
High
Risk gradient
Key drivers are enriched against the published annotator catalog when available; otherwise sensible defaults are used.
Key drivers
Command injection attempts
Request content resembles attempts to execute OS commands via an application.
cmdi
Hits 153
Points 3169.05
Path traversal attempts
Request paths/parameters resemble attempts to access files outside intended directories.
trav
Hits 339
Points 2235.68
Credential brute forcing
Repeated authentication attempts consistent with password guessing or credential stuffing.
cred
Hits 844
Points 1616.67
Scan velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
scan_velocity
Hits 1215
Points 1580.69
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 8932
Points 1161.21
Sensitive file probing
Requests target commonly sensitive files, configs, backups, or administrative resources.
sfp
Hits 175
Points 1133.28
Automated client behavior
Traffic patterns strongly suggest automation rather than a human-operated browser.
bot
Hits 2285
Points 1084.73
Protocol anomaly
Request structure or protocol-level signals deviate from typical browser HTTP traffic.
proto
Hits 63
Points 34.22
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 108
Points 20.85
HTTP method anomaly
Unusual or unexpected HTTP methods observed for the target endpoints.
method
Hits 84
Points 13.99

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
36885
3xx
3950
4xx
6998
5xx
591
Unique URLs
9454
Total hits
51323
First seen
April 30, 2023, 3 a.m.
Last seen
Jan. 11, 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
Command injection attempts cmdi
Request content resembles attempts to execute OS commands via an application.
hits 153 pts 3169.05
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
28 95 1 1989.68 June 15, 2023, 6:18 p.m. Nov. 26, 2025, 3:15 a.m.
cmdi 95
30 41 1 940.95 Aug. 2, 2023, 9:59 a.m. Sept. 26, 2025, 12:24 p.m.
cmdi 41
22 17 1 238.43 June 5, 2024, 12:20 a.m. March 19, 2025, 10:29 p.m.
cmdi 17
Path traversal attempts trav
Request paths/parameters resemble attempts to access files outside intended directories.
hits 339 pts 2235.68
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
28 131 1 877.39 June 1, 2024, 2:01 a.m. April 30, 2025, 2:40 a.m.
trav 131
26 131 1 797.00 June 1, 2024, 2:01 a.m. April 30, 2025, 2:40 a.m.
trav 131
30 77 1 561.29 June 5, 2024, 12:18 a.m. April 30, 2025, 2:40 a.m.
trav 77
Credential brute forcing cred
Repeated authentication attempts consistent with password guessing or credential stuffing.
hits 844 pts 1616.67
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 239 1 920.59 Oct. 20, 2023, 4:26 p.m. June 12, 2024, 8:50 a.m.
cred 239
8 152 1 464.42 April 15, 2024, 5:12 p.m. Sept. 27, 2024, 7 a.m.
cred 152
6 107 1 211.86 May 28, 2024, midnight Sept. 27, 2024, 7 a.m.
cred 107
12 4 1 19.80 Oct. 20, 2023, 4:26 p.m. Nov. 5, 2023, 1:59 p.m.
cred 4
0 342 1 0.00 Oct. 20, 2023, 4:26 p.m. Sept. 27, 2024, 7 a.m.
cred 342
Scan velocity scan_velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
hits 1215 pts 1580.69
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 189 1 347.00 April 15, 2024, 5:13 p.m. Oct. 10, 2025, 7:58 a.m.
scan_velocity 189
14 152 1 326.59 April 15, 2024, 5:14 p.m. May 6, 2025, 4:25 a.m.
scan_velocity 152
16 100 1 248.83 April 28, 2024, 9:43 a.m. May 5, 2025, 10 p.m.
scan_velocity 100
18 64 1 182.09 April 28, 2024, 9:43 a.m. May 5, 2025, 10 p.m.
scan_velocity 64
20 48 1 155.16 June 5, 2024, 12:19 a.m. April 30, 2025, 2:40 a.m.
scan_velocity 48
22 40 1 142.16 June 5, 2024, 12:19 a.m. April 30, 2025, 2:40 a.m.
scan_velocity 40
10 110 1 140.22 Oct. 22, 2023, 3:50 p.m. Jan. 10, 2026, 2:53 a.m.
scan_velocity 110
24 8 1 30.67 June 12, 2024, 8:51 a.m. Nov. 27, 2024, 7:24 p.m.
scan_velocity 8
26 2 1 7.96 June 12, 2024, 8:51 a.m. June 12, 2024, 8:51 a.m.
scan_velocity 2
0 502 1 0.00 Oct. 22, 2023, 3:50 p.m. Jan. 10, 2026, 2:53 a.m.
scan_velocity 502
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 8932 pts 1161.21
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 6840 1 984.96 Aug. 2, 2023, 8:17 p.m. Oct. 4, 2025, 6:03 p.m.
ua 6840
6 1354 1 97.49 April 30, 2023, 2:31 p.m. Dec. 17, 2025, 12:24 a.m.
ua 1354
8 726 1 75.86 July 7, 2023, 4:23 p.m. Dec. 17, 2025, 3:59 p.m.
ua 726
14 11 1 2.46 Sept. 28, 2023, 10:54 p.m. Sept. 21, 2025, 8:08 p.m.
ua 11
24 1 1 0.44 Oct. 3, 2023, 2:13 p.m. Oct. 3, 2023, 2:13 p.m.
ua 1
Sensitive file probing sfp
Requests target commonly sensitive files, configs, backups, or administrative resources.
hits 175 pts 1133.28
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
34 131 1 842.70 June 1, 2024, 2:01 a.m. April 30, 2025, 2:40 a.m.
sensitive_file 131
36 41 1 279.26 Aug. 2, 2023, 9:59 a.m. Sept. 26, 2025, 12:24 p.m.
sensitive_file 41
22 3 1 11.33 Feb. 12, 2024, 1:29 a.m. April 30, 2024, 7:34 a.m.
sensitive_file 3
Automated client behavior bot
Traffic patterns strongly suggest automation rather than a human-operated browser.
hits 2285 pts 1084.73
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 2282 1 1083.95 May 30, 2024, 12:04 p.m. Jan. 9, 2026, 5:42 p.m.
bot 2282
8 3 1 0.78 Feb. 14, 2024, 11:12 a.m. Dec. 28, 2024, 9:53 a.m.
bot 3
Protocol anomaly proto
Request structure or protocol-level signals deviate from typical browser HTTP traffic.
hits 63 pts 34.22
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 42 1 29.03 June 5, 2024, 12:18 a.m. April 30, 2025, 2:40 a.m.
proto 42
11 5 1 3.08 Aug. 22, 2023, 2:30 a.m. Aug. 26, 2025, 11:14 p.m.
proto 5
3 16 1 2.11 June 5, 2024, 12:18 a.m. Feb. 17, 2025, 5:04 a.m.
proto 16
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 108 pts 20.85
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
14 30 1 17.57 June 29, 2025, 2:33 a.m. Jan. 10, 2026, 1:34 a.m.
request_size 30
12 7 1 3.28 March 11, 2025, 8:30 a.m. Jan. 10, 2026, 1:33 a.m.
request_size 7
0 71 1 0.00 Feb. 20, 2025, 5:33 a.m. Jan. 10, 2026, 1:33 a.m.
request_size 71
HTTP method anomaly method
Unusual or unexpected HTTP methods observed for the target endpoints.
hits 84 pts 13.99
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
3 75 1 9.45 May 16, 2023, 4:19 a.m. Oct. 2, 2025, 5:50 p.m.
method 75
10 6 1 3.31 Jan. 29, 2024, 5:49 a.m. Feb. 24, 2025, 6:43 p.m.
method 6
8 3 1 1.22 Nov. 27, 2024, 5:56 a.m. Nov. 27, 2024, 5:56 a.m.
method 3
SQL injection attempts sqli
Input patterns resemble attempts to manipulate SQL queries via application parameters.
hits 1 pts 4.40
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
8 1 1 4.40 Nov. 6, 2025, 9:04 p.m. Nov. 6, 2025, 9:04 p.m.
sqli 1
Referrer abuse ref
Referrer patterns look manipulated, irrelevant, or inconsistent with normal navigation.
hits 2 pts 0.25
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 2 1 0.25 Nov. 5, 2023, 1:59 p.m. Nov. 5, 2023, 1:59 p.m.
ref 2

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
Loading subnets…

Interesting IPs

Top risky peers inside this ASN (latest snapshot). Sorted by risk score, then hits.

No peer rows available for this ASN snapshot.