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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.

104.28.104.0/24

Risk Max LOW Footprint 0.781% Hits 6
Prefix / IP version
/24 · IPv4
Network
104.28.104.0
Broadcast
104.28.104.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
42.6533 , -87.81683333333332
Hits / Errors
6 hits · 1 errors
First / Last seen
2024-12-23 21:04 · 2024-12-29 21:03
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2024-12-23 → 2024-12-30 · Updated 2026-01-14 · v2

66.21.242.0/24

Risk Max LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
66.21.242.0
Broadcast
66.21.242.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
43.03889999999999 , -87.9065
Hits / Errors
3 hits · 1 errors
First / Last seen
2025-08-02 22:56 · 2025-08-03 16:01
Top ASN
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

172.59.107.0/24

Risk Max LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.59.107.0
Broadcast
172.59.107.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
43.1193 , -87.95049999999999
Hits / Errors
3 hits · 0 errors
First / Last seen
2025-05-22 21:30 · 2025-05-23 18:39
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

172.59.104.0/24

Risk Max LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.59.104.0
Broadcast
172.59.104.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
43.1193 , -87.9505
Hits / Errors
3 hits · 1 errors
First / Last seen
2025-05-05 10:31 · 2025-05-05 23:31
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

166.181.81.0/24

Risk Max LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
166.181.81.0
Broadcast
166.181.81.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
43.0125 , -87.9726
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-05 08:25 · 2025-05-06 07:06
Top ASN
AS6614 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

172.59.98.0/24

Risk Max LOW Footprint 0.391% Hits 48
Prefix / IP version
/24 · IPv4
Network
172.59.98.0
Broadcast
172.59.98.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1601 , -87.9944
Hits / Errors
48 hits · 0 errors
First / Last seen
2025-05-23 07:19 · 2025-05-23 07:49
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

216.56.9.0/24

Risk Max LOW Footprint 0.391% Hits 40
Prefix / IP version
/24 · IPv4
Network
216.56.9.0
Broadcast
216.56.9.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1154 , -88.0346
Hits / Errors
40 hits · 0 errors
First / Last seen
2025-05-23 20:25 · 2025-05-23 20:42
Top ASN
AS2381 · WiscNet
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

216.56.105.0/24

Risk Max LOW Footprint 0.391% Hits 28
Prefix / IP version
/24 · IPv4
Network
216.56.105.0
Broadcast
216.56.105.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.067 , -87.9682
Hits / Errors
28 hits · 0 errors
First / Last seen
2025-03-19 22:27 · 2025-03-19 22:27
Top ASN
AS2381 · WiscNet
Top organization / ISP
Window / Updated
2025-03-17 → 2025-03-24 · Updated 2026-01-14 · v2

216.56.4.0/24

Risk Max LOW Footprint 0.391% Hits 25
Prefix / IP version
/24 · IPv4
Network
216.56.4.0
Broadcast
216.56.4.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0818 , -87.892
Hits / Errors
25 hits · 0 errors
First / Last seen
2025-01-23 20:13 · 2025-01-23 21:42
Top ASN
AS2381 · WiscNet
Top organization / ISP
Window / Updated
2025-01-20 → 2025-01-27 · Updated 2026-01-14 · v2

75.9.109.0/24

Risk Max LOW Footprint 0.391% Hits 25
Prefix / IP version
/24 · IPv4
Network
75.9.109.0
Broadcast
75.9.109.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1601 , -87.9944
Hits / Errors
25 hits · 1 errors
First / Last seen
2024-12-25 03:26 · 2024-12-25 05:24
Top ASN
Top organization / ISP
Window / Updated
2024-12-23 → 2024-12-30 · Updated 2026-01-14 · v2

65.29.225.0/24

Risk Max LOW Footprint 0.391% Hits 21
Prefix / IP version
/24 · IPv4
Network
65.29.225.0
Broadcast
65.29.225.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1475 , -87.905
Hits / Errors
21 hits · 2 errors
First / Last seen
2024-05-25 22:24 · 2024-05-25 22:35
Top ASN
Top organization / ISP
Window / Updated
2024-05-20 → 2024-05-27 · Updated 2026-01-14 · v2

216.56.74.0/24

Risk Max LOW Footprint 0.391% Hits 20
Prefix / IP version
/24 · IPv4
Network
216.56.74.0
Broadcast
216.56.74.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0742 , -87.9149
Hits / Errors
20 hits · 0 errors
First / Last seen
2025-04-08 15:58 · 2025-04-08 16:11
Top ASN
AS2381 · WiscNet
Top organization / ISP
Window / Updated
2025-04-07 → 2025-04-14 · Updated 2026-01-14 · v2

172.59.99.0/24

Risk Max LOW Footprint 0.391% Hits 13
Prefix / IP version
/24 · IPv4
Network
172.59.99.0
Broadcast
172.59.99.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.16010000000001 , -87.99440000000001
Hits / Errors
13 hits · 0 errors
First / Last seen
2025-08-02 02:18 · 2025-08-02 02:18
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

23.113.137.0/24

Risk Max LOW Footprint 0.391% Hits 13
Prefix / IP version
/24 · IPv4
Network
23.113.137.0
Broadcast
23.113.137.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0475 , -87.8964
Hits / Errors
13 hits · 2 errors
First / Last seen
2024-05-09 21:57 · 2024-05-09 21:58
Top ASN
Top organization / ISP
Window / Updated
2024-05-06 → 2024-05-13 · Updated 2026-01-14 · v2

172.59.109.0/24

Risk Max LOW Footprint 0.391% Hits 6
Prefix / IP version
/24 · IPv4
Network
172.59.109.0
Broadcast
172.59.109.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1193 , -87.95049999999999
Hits / Errors
6 hits · 2 errors
First / Last seen
2025-10-11 08:15 · 2025-10-11 08:16
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-10-06 → 2025-10-13 · Updated 2026-01-14 · v2

174.97.140.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
174.97.140.0
Broadcast
174.97.140.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0026 , -87.9417
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-08-07 09:23 · 2025-08-07 09:23
Top ASN
Top organization / ISP
Window / Updated
2025-08-04 → 2025-08-11 · Updated 2026-01-14 · v2

76.229.125.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
76.229.125.0
Broadcast
76.229.125.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0829 , -87.9777
Hits / Errors
2 hits · 1 errors
First / Last seen
2025-08-06 09:16 · 2025-08-06 09:16
Top ASN
Window / Updated
2025-08-04 → 2025-08-11 · Updated 2026-01-14 · v2

75.11.24.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
75.11.24.0
Broadcast
75.11.24.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.9778 , -87.891
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-08-06 00:58 · 2025-08-06 00:58
Top ASN
Top organization / ISP
Window / Updated
2025-08-04 → 2025-08-11 · Updated 2026-01-14 · v2

99.2.200.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
99.2.200.0
Broadcast
99.2.200.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1564 , -88.0339
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-08-03 02:12 · 2025-08-03 02:12
Top ASN
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

76.39.93.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
76.39.93.0
Broadcast
76.39.93.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1601 , -87.9944
Hits / Errors
2 hits · 1 errors
First / Last seen
2025-08-02 21:00 · 2025-08-02 21:00
Top ASN
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

98.144.59.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
98.144.59.0
Broadcast
98.144.59.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1601 , -87.9944
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-07-31 22:03 · 2025-07-31 22:03
Top ASN
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

76.39.92.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
76.39.92.0
Broadcast
76.39.92.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1601 , -87.9944
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-07-24 06:40 · 2025-07-24 06:40
Top ASN
Top organization / ISP
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

104.231.197.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
104.231.197.0
Broadcast
104.231.197.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1166 , -87.9904
Hits / Errors
2 hits · 1 errors
First / Last seen
2025-07-22 15:28 · 2025-07-24 01:15
Top ASN
Top organization / ISP
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

162.225.55.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
162.225.55.0
Broadcast
162.225.55.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1166 , -87.9904
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-07-22 18:12 · 2025-07-22 18:12
Top ASN
Top organization / ISP
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

107.216.203.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
107.216.203.0
Broadcast
107.216.203.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0829 , -87.9777
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-23 16:57 · 2025-05-23 16:57
Top ASN
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

75.196.159.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
75.196.159.0
Broadcast
75.196.159.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0753 , -87.9332
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-23 16:34 · 2025-05-23 16:34
Top ASN
AS6167 · Verizon Business
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

69.218.32.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
69.218.32.0
Broadcast
69.218.32.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0829 , -87.9777
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-23 12:43 · 2025-05-23 12:43
Top ASN
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

75.9.85.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
75.9.85.0
Broadcast
75.9.85.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.067 , -87.9682
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-23 07:10 · 2025-05-23 07:10
Top ASN
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

174.192.138.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
174.192.138.0
Broadcast
174.192.138.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0132 , -87.9287
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-23 06:59 · 2025-05-23 06:59
Top ASN
AS6167 · Verizon Business
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

65.29.172.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
65.29.172.0
Broadcast
65.29.172.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.7009 , -88.5462
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-22 21:34 · 2025-05-22 21:34
Top ASN
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

172.59.97.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
172.59.97.0
Broadcast
172.59.97.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1601 , -87.9944
Hits / Errors
2 hits · 1 errors
First / Last seen
2025-05-06 17:43 · 2025-05-06 17:43
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

140.248.31.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
140.248.31.0
Broadcast
140.248.31.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0382 , -87.91
Hits / Errors
2 hits · 0 errors
First / Last seen
2024-12-23 20:54 · 2024-12-23 20:54
Top ASN
AS54113 · Fastly, Inc.
Top organization / ISP
Window / Updated
2024-12-23 → 2024-12-30 · Updated 2026-01-14 · v2

107.210.122.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
107.210.122.0
Broadcast
107.210.122.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.9778 , -87.891
Hits / Errors
2 hits · 1 errors
First / Last seen
2024-11-03 21:33 · 2024-11-03 21:33
Top ASN
Top organization / ISP
Window / Updated
2024-10-28 → 2024-11-04 · Updated 2026-01-14 · v2

23.226.211.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
23.226.211.0
Broadcast
23.226.211.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0382 , -87.91
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-12-17 05:25 · 2025-12-17 05:25
Top ASN
AS396319 · Oxylabs
Top organization / ISP
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2

107.204.250.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
107.204.250.0
Broadcast
107.204.250.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1166 , -87.9904
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-29 14:10 · 2025-11-29 14:10
Top ASN
Top organization / ISP
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2

172.59.105.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.105.0
Broadcast
172.59.105.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1193 , -87.9505
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-10-08 21:03 · 2025-10-08 21:03
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-10-06 → 2025-10-13 · Updated 2026-01-14 · v2

172.59.108.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.108.0
Broadcast
172.59.108.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1193 , -87.9505
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-09-15 06:49 · 2025-09-15 06:49
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2025-09-15 → 2025-09-22 · Updated 2026-01-14 · v2

174.103.230.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
174.103.230.0
Broadcast
174.103.230.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1601 , -87.9944
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-07 08:05 · 2025-08-07 08:05
Top ASN
Top organization / ISP
Window / Updated
2025-08-04 → 2025-08-11 · Updated 2026-01-14 · v2

99.36.10.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
99.36.10.0
Broadcast
99.36.10.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1166 , -87.9904
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-05 19:44 · 2025-08-05 19:44
Top ASN
Top organization / ISP
Window / Updated
2025-08-04 → 2025-08-11 · Updated 2026-01-14 · v2

72.135.144.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
72.135.144.0
Broadcast
72.135.144.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.7009 , -88.5462
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-03 22:46 · 2025-08-03 22:46
Top ASN
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2
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