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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.

75.201.221.0/24

Risk Max LOW Footprint 0.391% Hits 17
Prefix / IP version
/24 · IPv4
Network
75.201.221.0
Broadcast
75.201.221.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.16 , -89.7768
Hits / Errors
17 hits · 1 errors
First / Last seen
2025-01-01 05:39 · 2025-01-01 05:40
Top ASN
AS6167 · Verizon Business
Top organization / ISP
Window / Updated
2024-12-30 → 2025-01-06 · Updated 2026-01-14 · v2

98.251.250.0/24

Risk Max LOW Footprint 0.391% Hits 15
Prefix / IP version
/24 · IPv4
Network
98.251.250.0
Broadcast
98.251.250.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.164 , -89.7826
Hits / Errors
15 hits · 0 errors
First / Last seen
2025-08-24 22:37 · 2025-08-24 22:37
Window / Updated
2025-08-18 → 2025-08-25 · Updated 2026-01-14 · v2

99.118.74.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
99.118.74.0
Broadcast
99.118.74.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.16 , -89.7768
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-07-20 01:52 · 2025-07-20 01:52
Top ASN
Top organization / ISP
Window / Updated
2025-07-14 → 2025-07-21 · Updated 2026-01-14 · v2

99.72.233.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
99.72.233.0
Broadcast
99.72.233.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
38.596 , -121.2127
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-23 18:52 · 2025-05-23 18:52
Top ASN
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

98.50.155.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
98.50.155.0
Broadcast
98.50.155.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.164 , -89.7826
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-06 09:43 · 2025-05-06 09:43
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

108.216.170.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
108.216.170.0
Broadcast
108.216.170.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.164 , -89.7826
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-28 04:19 · 2025-08-28 04:19
Top ASN
Top organization / ISP
Window / Updated
2025-08-25 → 2025-09-01 · Updated 2026-01-14 · v2

172.56.15.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.15.0
Broadcast
172.56.15.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
38.5891 , -121.303
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-12 08:10 · 2025-08-12 08:10
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-08-11 → 2025-08-18 · Updated 2026-01-14 · v2

75.44.127.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
75.44.127.0
Broadcast
75.44.127.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.16 , -89.7768
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-09 23:53 · 2025-08-09 23:53
Top ASN
Top organization / ISP
Window / Updated
2025-08-04 → 2025-08-11 · Updated 2026-01-14 · v2

174.161.191.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
174.161.191.0
Broadcast
174.161.191.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.16 , -89.7768
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-05 16:23 · 2025-08-05 16:23
Window / Updated
2025-08-04 → 2025-08-11 · Updated 2026-01-14 · v2

70.240.156.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
70.240.156.0
Broadcast
70.240.156.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.164 , -89.7826
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-07-23 12:55 · 2025-07-23 12:55
Top ASN
Top organization / ISP
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

73.127.123.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
73.127.123.0
Broadcast
73.127.123.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.164 , -89.7826
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-07-22 05:22 · 2025-07-22 05:22
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

104.251.168.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.251.168.0
Broadcast
104.251.168.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.16 , -89.7768
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-07-22 03:44 · 2025-07-22 03:44
Top ASN
AS393950 · Xiber
Top organization / ISP
— · Xiber
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

23.121.104.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
23.121.104.0
Broadcast
23.121.104.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.16 , -89.7768
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-07-22 01:28 · 2025-07-22 01:28
Top ASN
Top organization / ISP
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

23.115.153.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
23.115.153.0
Broadcast
23.115.153.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
38.6106 , -121.2789
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-05 21:09 · 2025-05-05 21:09
Top ASN
Top organization / ISP
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

24.2.54.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
24.2.54.0
Broadcast
24.2.54.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
38.6106 , -121.2789
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-04 23:26 · 2025-05-04 23:26
Window / Updated
2025-04-28 → 2025-05-05 · Updated 2026-01-14 · v2