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Interesting Subnets

Directory of active subnets observed by Syndu. Each row is the latest cached SubnetSnapshot per subnet and includes: density, traffic, geo/ASN representatives, and risk distribution.
Active filter: Fastmos Co Limited · Clear
Snapshot 2026-01-20 Results 3 Page 1 / 1

154.89.148.0/24

Risk Max 18 LOW Footprint 0.391% Hits 94
Prefix / IP version
/24 · IPv4
Network
154.89.148.0
Broadcast
154.89.148.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
22.319299999999995 , 114.16900000000001
Hits / Errors
94 hits · 88 errors
First / Last seen
2025-05-20 22:41 · 2025-05-20 22:41
Top ASN
AS55933 · Cloudie Limited
Top organization / ISP
Fastmos Co Limited · Fastmos Co Limited
Top geo
Hong Kong · Kowloon · Hong Kong
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2
Open report →

154.217.243.0/24

Risk Max 4 LOW Footprint 0.391% Hits 5
Prefix / IP version
/24 · IPv4
Network
154.217.243.0
Broadcast
154.217.243.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
34.0549 , -118.24299999999998
Hits / Errors
5 hits · 3 errors
First / Last seen
2025-08-23 04:05 · 2025-08-23 04:06
Top ASN
AS400619 · AROSSCLOUD INC.
Top organization / ISP
Fastmos Co Limited · Arosscloud Inc.
Top geo
United States · California · Los Angeles
Window / Updated
2025-08-18 → 2025-08-25 · Updated 2026-01-14 · v2
Open report →

156.239.43.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
156.239.43.0
Broadcast
156.239.43.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
34.0549 , -118.243
Hits / Errors
1 hits · 0 errors
First / Last seen
2023-08-10 11:22 · 2023-08-10 11:22
Top ASN
AS400619 · AROSSCLOUD INC.
Top organization / ISP
Fastmos Co Limited · Sprious
Top geo
United States · California · Los Angeles
Window / Updated
2023-08-07 → 2023-08-14 · Updated 2026-01-14 · v2
Open report →