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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: Boulder · Clear
Snapshot 2026-01-22 Results 4 Page 1 / 1

108.166.190.0/24

Risk Max 1 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
108.166.190.0
Broadcast
108.166.190.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.0187 , -105.256
Hits / Errors
4 hits · 2 errors
First / Last seen
2024-01-27 23:39 · 2024-01-27 23:39
Top ASN
AS13354 · zColo
Top organization / ISP
zColo · zColo
Top geo
United States · Colorado · Boulder
Window / Updated
2024-01-22 → 2024-01-29 · Updated 2026-01-14 · v2
Open report →

161.97.25.0/24

Risk Max — LOW Footprint 0.391% Hits 17
Prefix / IP version
/24 · IPv4
Network
161.97.25.0
Broadcast
161.97.25.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.05 , -105.217
Hits / Errors
17 hits · 0 errors
First / Last seen
2025-02-20 19:55 · 2025-02-20 19:56
Top ASN
AS17025 · Zayo Bandwidth
Top organization / ISP
Boulder Valley School District · Zayo Bandwidth
Top geo
United States · Colorado · Boulder
Window / Updated
2025-02-17 → 2025-02-24 · Updated 2026-01-14 · v2
Open report →

192.12.240.0/24

Risk Max — LOW Footprint 0.391% Hits 5
Prefix / IP version
/24 · IPv4
Network
192.12.240.0
Broadcast
192.12.240.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.0141 , -105.247
Hits / Errors
5 hits · 0 errors
First / Last seen
2024-06-12 19:36 · 2024-06-13 14:43
Top ASN
AS104 · University of Colorado at Boulder
Top organization / ISP
University of Colorado · University of Colorado at Boulder
Top geo
United States · Colorado · Boulder
Window / Updated
2024-06-10 → 2024-06-17 · Updated 2026-01-14 · v2
Open report →

67.202.80.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
67.202.80.0
Broadcast
67.202.80.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.0177 , -105.277
Hits / Errors
2 hits · 1 errors
First / Last seen
2024-02-17 04:51 · 2024-02-17 04:51
Top ASN
AS47869 · ColoHouse LLC
Top organization / ISP
SendGrid · Steadfast Networks
Top geo
United States · Colorado · Boulder
Window / Updated
2024-02-12 → 2024-02-19 · Updated 2026-01-14 · v2
Open report →