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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: University of Pennsylvania · Clear
Snapshot 2026-02-01 Results 6 Page 1 / 1

165.123.239.0/24

Risk Max — LOW Footprint 0.781% Hits 7
Prefix / IP version
/24 · IPv4
Network
165.123.239.0
Broadcast
165.123.239.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
39.9597 , -75.19950000000001
Hits / Errors
7 hits · 3 errors
First / Last seen
2024-11-16 05:10 · 2024-11-16 07:02
Top ASN
AS55 · University of Pennsylvania
Top organization / ISP
University of Pennsylvania · University of Pennsylvania
Top geo
United States · Pennsylvania · Philadelphia
Window / Updated
2024-11-11 → 2024-11-18 · Updated 2026-01-14 · v2
Open report →

148.137.196.0/24

Risk Max — LOW Footprint 0.391% Hits 35
Prefix / IP version
/24 · IPv4
Network
148.137.196.0
Broadcast
148.137.196.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.0106 , -76.4442
Hits / Errors
35 hits · 13 errors
First / Last seen
2024-10-08 23:49 · 2024-10-09 00:01
Top ASN
AS7150 · Commonwealth University of Pennsylvania
Top organization / ISP
Commonwealth University of Pennsylvania · Commonwealth University of Pennsylvania
Top geo
United States · Pennsylvania · Bloomsburg
Window / Updated
2024-10-07 → 2024-10-14 · Updated 2026-01-14 · v2
Open report →

104.201.131.0/24

Risk Max — LOW Footprint 0.391% Hits 27
Prefix / IP version
/24 · IPv4
Network
104.201.131.0
Broadcast
104.201.131.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.1768 , -75.5477
Hits / Errors
27 hits · 0 errors
First / Last seen
2025-02-22 19:53 · 2025-02-22 19:55
Top ASN
AS29848 · West Chester University of Pennsylvania
Top organization / ISP
West Chester University of Pennsylvania · West Chester University of Pennsylvania
Top geo
United States · Pennsylvania · Spring City
Window / Updated
2025-02-17 → 2025-02-24 · Updated 2026-01-14 · v2
Open report →

104.201.168.0/24

Risk Max — LOW Footprint 0.391% Hits 23
Prefix / IP version
/24 · IPv4
Network
104.201.168.0
Broadcast
104.201.168.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.9656 , -75.6043
Hits / Errors
23 hits · 0 errors
First / Last seen
2025-02-22 17:55 · 2025-02-22 18:50
Top ASN
AS29848 · West Chester University of Pennsylvania
Top organization / ISP
West Chester University of Pennsylvania · West Chester University of Pennsylvania
Top geo
United States · Pennsylvania · West Chester
Window / Updated
2025-02-17 → 2025-02-24 · Updated 2026-01-14 · v2
Open report →

144.80.146.0/24

Risk Max — LOW Footprint 0.391% Hits 14
Prefix / IP version
/24 · IPv4
Network
144.80.146.0
Broadcast
144.80.146.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.6189 , -79.159
Hits / Errors
14 hits · 0 errors
First / Last seen
2025-03-06 22:01 · 2025-03-06 22:01
Top ASN
AS62989 · Indiana University of Pennsylvania
Top organization / ISP
Indiana University of Pennsylvania · Indiana University of Pennsylvania
Top geo
United States · Pennsylvania · Indiana
Window / Updated
2025-03-03 → 2025-03-10 · Updated 2026-01-14 · v2
Open report →

165.123.229.0/24

Risk Max — LOW Footprint 0.391% Hits 14
Prefix / IP version
/24 · IPv4
Network
165.123.229.0
Broadcast
165.123.229.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.9597 , -75.19950000000001
Hits / Errors
14 hits · 0 errors
First / Last seen
2025-03-05 19:41 · 2025-03-05 19:41
Top ASN
AS55 · University of Pennsylvania
Top organization / ISP
University of Pennsylvania · University of Pennsylvania
Top geo
United States · Pennsylvania · Philadelphia
Window / Updated
2025-03-03 → 2025-03-10 · Updated 2026-01-14 · v2
Open report →