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ASN REPORT — AS22616 · ZSCALER, INC.

First sighted: Oct. 18, 2023, 3 a.m. · Last sighted: Feb. 15, 2026, 2 a.m.

Risk
2 (low)
Total hits
1255
Total errors
189
Observed IPs
55
Top country
United States
Top city
Toronto
Top region
Washington

Risk

Model: v1 Computed: 2026-02-27 17:09:49
Risk score
2
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 6
Points 19.80
Scan velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
scan_velocity
Hits 20
Points 18.00
User-Agent anomaly
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
ua
Hits 96
Points 11.60
Request size anomaly
Requests are unusually large or shaped in a way that suggests abuse or automation.
request_size
Hits 70
Points 5.28
Protocol anomaly
Request structure or protocol-level signals deviate from typical browser HTTP traffic.
proto
Hits 6
Points 4.32
Referrer abuse
Referrer patterns look manipulated, irrelevant, or inconsistent with normal navigation.
ref
Hits 2
Points 0.36

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
1066
3xx
0
4xx
189
5xx
0
Unique URLs
0
Total hits
1255
First seen
Oct. 18, 2023, 3 a.m.
Last seen
Feb. 15, 2026, 2 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 6 pts 19.80
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 2 1 11.00 March 28, 2025, 10:47 p.m. March 28, 2025, 10:47 p.m. —
8 2 1 8.80 March 28, 2025, 10:47 p.m. March 28, 2025, 10:47 p.m. —
0 2 1 0.00 March 28, 2025, 10:47 p.m. March 28, 2025, 10:47 p.m. —
Scan velocity scan_velocity
High request rate and broad endpoint coverage suggest scanning or automated enumeration.
hits 20 pts 18.00
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
10 10 5 18.00 Feb. 22, 2024, 12:01 a.m. May 20, 2025, 6:51 p.m. —
0 10 5 0.00 Feb. 22, 2024, 12:01 a.m. May 20, 2025, 6:51 p.m. —
User-Agent anomaly ua
User-Agent signals look missing, inconsistent, or indicative of non-browser tooling.
hits 96 pts 11.60
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 94 13 11.28 Feb. 22, 2024, midnight Aug. 4, 2025, 11:58 p.m. —
8 2 1 0.32 May 22, 2025, 4:04 p.m. May 22, 2025, 4:04 p.m. —
Request size anomaly request_size
Requests are unusually large or shaped in a way that suggests abuse or automation.
hits 70 pts 5.28
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 5 3 3.60 Feb. 26, 2025, 5:47 p.m. March 28, 2025, 10:47 p.m. —
14 2 2 1.68 Jan. 22, 2026, 9:45 p.m. Jan. 23, 2026, 6:10 p.m. —
0 63 16 0.00 Jan. 10, 2025, 9:51 p.m. Aug. 4, 2025, 7:58 p.m. —
Protocol anomaly proto
Request structure or protocol-level signals deviate from typical browser HTTP traffic.
hits 6 pts 4.32
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
12 4 1 3.84 May 22, 2025, 4:04 p.m. May 22, 2025, 4:04 p.m. —
3 2 1 0.48 May 22, 2025, 4:04 p.m. May 22, 2025, 4:04 p.m. —
Referrer abuse ref
Referrer patterns look manipulated, irrelevant, or inconsistent with normal navigation.
hits 2 pts 0.36
Breakdown by severity band (all-time). “Weighted” reflects your weight configuration.
Severity Total Labels Weighted First seen Last seen Top labels
6 2 1 0.36 March 28, 2025, 10:47 p.m. March 28, 2025, 10:47 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 ASN snapshot (peer IPs with coordinates).

Loading map…

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.

170.85.20.199 low
Open report
1 /100
Last seen 2025-03-30 03:00
Hits
203
Errors
21
Country
Brazil
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.82.175 low
Open report
0 /100
Last seen 2025-03-14 02:00
Hits
127
Errors
104
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
104.129.198.110 low
Open report
0 /100
Last seen 2024-02-22 02:00
Hits
107
Errors
44
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.18.204 low
Open report
0 /100
Last seen 2025-03-27 02:00
Hits
72
Errors
3
Country
Brazil
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.77.100 low
Open report
0 /100
Last seen 2025-04-23 03:00
Hits
65
Errors
0
Country
Canada
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.10.94 low
Open report
0 /100
Last seen 2025-05-21 03:00
Hits
56
Errors
2
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.59.14 low
Open report
0 /100
Last seen 2025-05-29 03:00
Hits
44
Errors
6
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.82.107 low
Open report
0 /100
Last seen 2025-08-05 03:00
Hits
42
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.131.15 low
Open report
0 /100
Last seen 2025-05-23 03:00
Hits
36
Errors
2
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.77.33 low
Open report
0 /100
Last seen 2025-04-20 03:00
Hits
35
Errors
0
Country
Canada
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.63.33 low
Open report
0 /100
Last seen 2025-04-01 03:00
Hits
33
Errors
0
Country
Brazil
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.9.32 low
Open report
0 /100
Last seen 2025-05-24 03:00
Hits
30
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.10.104 low
Open report
0 /100
Last seen 2025-02-27 02:00
Hits
29
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.2.249 low
Open report
0 /100
Last seen 2024-10-15 03:00
Hits
23
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
104.129.199.18 low
Open report
0 /100
Last seen 2024-11-28 02:00
Hits
22
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.6.187 low
Open report
0 /100
Last seen 2024-06-13 03:00
Hits
20
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.10.82 low
Open report
0 /100
Last seen 2025-01-15 02:00
Hits
20
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.32.178 low
Open report
0 /100
Last seen 2025-01-24 02:00
Hits
17
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.54.112 low
Open report
0 /100
Last seen 2025-02-05 02:00
Hits
16
Errors
1
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.7.82 low
Open report
0 /100
Last seen 2025-02-19 02:00
Hits
15
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.68.186 low
Open report
0 /100
Last seen 2025-04-26 03:00
Hits
15
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.73.86 low
Open report
0 /100
Last seen 2025-01-11 02:00
Hits
15
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.85.72 low
Open report
0 /100
Last seen 2025-04-08 03:00
Hits
15
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
147.161.128.93 low
Open report
0 /100
Last seen 2023-10-19 03:00
Hits
15
Errors
0
Country
Brazil
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.11.35 low
Open report
0 /100
Last seen 2025-05-09 03:00
Hits
15
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.86.244 low
Open report
0 /100
Last seen 2024-09-06 03:00
Hits
14
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.109.7 low
Open report
0 /100
Last seen 2024-09-24 03:00
Hits
14
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
104.129.199.28 low
Open report
0 /100
Last seen 2025-03-26 02:00
Hits
11
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.38.207 low
Open report
0 /100
Last seen 2024-11-20 02:00
Hits
11
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.53.97 low
Open report
0 /100
Last seen 2024-10-02 03:00
Hits
11
Errors
1
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.85.29 low
Open report
0 /100
Last seen 2025-03-26 02:00
Hits
11
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.102.99 low
Open report
0 /100
Last seen 2024-04-22 03:00
Hits
11
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.213.30 low
Open report
0 /100
Last seen 2024-02-01 02:00
Hits
11
Errors
0
Country
Canada
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.220.185 low
Open report
0 /100
Last seen 2024-10-15 03:00
Hits
11
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.70.84 low
Open report
0 /100
Last seen 2025-03-26 02:00
Hits
10
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.10.247 low
Open report
0 /100
Last seen 2024-09-06 03:00
Hits
8
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.130.172 low
Open report
0 /100
Last seen 2026-01-24 02:00
Hits
7
Errors
0
Country
Canada
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.18.193 low
Open report
0 /100
Last seen 2025-04-01 03:00
Hits
6
Errors
0
Country
Brazil
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.73.83 low
Open report
0 /100
Last seen 2025-04-05 03:00
Hits
5
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.61.42 low
Open report
0 /100
Last seen 2024-09-24 03:00
Hits
4
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.62.90 low
Open report
0 /100
Last seen 2025-03-28 03:00
Hits
3
Errors
0
Country
Brazil
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.84.209 low
Open report
0 /100
Last seen 2026-01-23 02:00
Hits
3
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.51.88 low
Open report
0 /100
Last seen 2025-01-14 02:00
Hits
2
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.109.83 low
Open report
0 /100
Last seen 2025-01-25 02:00
Hits
2
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.61.59 low
Open report
0 /100
Last seen 2024-09-10 03:00
Hits
2
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.18.200 low
Open report
0 /100
Last seen 2025-04-02 03:00
Hits
2
Errors
0
Country
Brazil
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.32.205 low
Open report
0 /100
Last seen 2025-05-07 03:00
Hits
1
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.57.1 low
Open report
0 /100
Last seen 2025-08-01 03:00
Hits
1
Errors
1
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.60.110 low
Open report
0 /100
Last seen 2024-11-19 02:00
Hits
1
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.66.193 low
Open report
0 /100
Last seen 2024-02-22 02:00
Hits
1
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.80.169 low
Open report
0 /100
Last seen 2026-02-12 02:00
Hits
1
Errors
1
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.84.167 low
Open report
0 /100
Last seen 2023-12-28 02:00
Hits
1
Errors
0
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
136.226.101.101 low
Open report
0 /100
Last seen 2025-05-06 03:00
Hits
1
Errors
1
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
165.225.57.79 low
Open report
0 /100
Last seen 2026-01-28 02:00
Hits
1
Errors
1
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.
170.85.56.255 low
Open report
0 /100
Last seen 2026-02-15 02:00
Hits
1
Errors
1
Country
United States
ASN
AS22616
AS Org
ZSCALER, INC.