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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: UPM · Clear
Snapshot 2026-01-23 Results 2 Page 1 / 1

138.4.252.0/24

Risk Max — LOW Footprint 0.391% Hits 11
Prefix / IP version
/24 · IPv4
Network
138.4.252.0
Broadcast
138.4.252.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.4409 , -3.7033
Hits / Errors
11 hits · 0 errors
First / Last seen
2025-03-25 10:26 · 2025-03-25 10:32
Top ASN
AS766 · RedIRIS Autonomous System
Top organization / ISP
UPM · Entidad Publica Empresarial Red.es
Top geo
Spain · Madrid · Madrid
Window / Updated
2025-03-24 → 2025-03-31 · Updated 2026-01-14 · v2
Open report →

151.228.89.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
151.228.89.0
Broadcast
151.228.89.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
51.5491 , 0.2612
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-07-23 21:11 · 2025-07-23 21:11
Top ASN
AS5607 · Sky UK Limited
Top organization / ISP
Sky Broadband · Sky UK Limited
Top geo
United Kingdom · England · Upminster
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2
Open report →