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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.

57.141.4.0/24

Risk Max 100 HIGH Footprint 26.953% Hits 62391
Prefix / IP version
/24 · IPv4
Network
57.141.4.0
Broadcast
57.141.4.255
Observed IPs / Subnet size
69 observed · 256 total
Centroid
41.88349999999999 , -87.63050000000001
Hits / Errors
62391 hits · 4258 errors
First / Last seen
2025-12-17 00:00 · 2025-12-17 23:59
Top ASN
AS32934 · Facebook, Inc.
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2

20.221.204.0/24

Risk Max 89 HIGH Footprint 0.391% Hits 766
Prefix / IP version
/24 · IPv4
Network
20.221.204.0
Broadcast
20.221.204.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8819 , -87.6278
Hits / Errors
766 hits · 426 errors
First / Last seen
2024-01-26 18:38 · 2024-01-28 01:16
Top ASN
Window / Updated
2024-01-22 → 2024-01-29 · Updated 2026-01-14 · v2

40.116.71.0/24

Risk Max 20 LOW Footprint 0.391% Hits 71
Prefix / IP version
/24 · IPv4
Network
40.116.71.0
Broadcast
40.116.71.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8819 , -87.6278
Hits / Errors
71 hits · 0 errors
First / Last seen
2023-09-03 23:34 · 2023-09-03 23:35
Top ASN
Window / Updated
2023-08-28 → 2023-09-04 · Updated 2026-01-14 · v2

216.225.199.0/24

Risk Max 19 LOW Footprint 0.391% Hits 8
Prefix / IP version
/24 · IPv4
Network
216.225.199.0
Broadcast
216.225.199.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6298
Hits / Errors
8 hits · 0 errors
First / Last seen
2025-02-08 12:24 · 2025-02-08 12:52
Top ASN
AS8560 · IONOS SE
Top organization / ISP
Window / Updated
2025-02-03 → 2025-02-10 · Updated 2026-01-14 · v2

98.159.224.0/24

Risk Max 18 LOW Footprint 0.391% Hits 115
Prefix / IP version
/24 · IPv4
Network
98.159.224.0
Broadcast
98.159.224.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6297
Hits / Errors
115 hits · 18 errors
First / Last seen
2024-01-02 05:15 · 2024-01-02 05:15
Top ASN
Top organization / ISP
Window / Updated
2024-01-01 → 2024-01-08 · Updated 2026-01-14 · v2

149.130.215.0/24

Risk Max 10 LOW Footprint 0.391% Hits 603
Prefix / IP version
/24 · IPv4
Network
149.130.215.0
Broadcast
149.130.215.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8486 , -87.6288
Hits / Errors
603 hits · 132 errors
First / Last seen
2025-02-18 21:03 · 2025-02-18 21:08
Top ASN
AS31898 · Oracle Corporation
Top organization / ISP
Window / Updated
2025-02-17 → 2025-02-24 · Updated 2026-01-14 · v2

43.231.233.0/24

Risk Max 8 LOW Footprint 0.391% Hits 313
Prefix / IP version
/24 · IPv4
Network
43.231.233.0
Broadcast
43.231.233.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6297
Hits / Errors
313 hits · 156 errors
First / Last seen
2023-09-26 14:03 · 2023-09-26 14:04
Top ASN
AS36007 · Kamatera, Inc.
Top organization / ISP
Window / Updated
2023-09-25 → 2023-10-02 · Updated 2026-01-14 · v2

66.55.67.0/24

Risk Max 5 LOW Footprint 0.391% Hits 171
Prefix / IP version
/24 · IPv4
Network
66.55.67.0
Broadcast
66.55.67.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6297
Hits / Errors
171 hits · 0 errors
First / Last seen
2024-01-01 06:16 · 2024-01-01 06:17
Top ASN
AS36007 · Kamatera, Inc.
Top organization / ISP
Window / Updated
2024-01-01 → 2024-01-08 · Updated 2026-01-14 · v2

104.223.120.0/24

Risk Max 4 LOW Footprint 0.391% Hits 12
Prefix / IP version
/24 · IPv4
Network
104.223.120.0
Broadcast
104.223.120.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6298
Hits / Errors
12 hits · 9 errors
First / Last seen
2025-05-31 19:16 · 2025-05-31 19:20
Top ASN
AS36352 · HostPapa
Top organization / ISP
Window / Updated
2025-05-26 → 2025-06-02 · Updated 2026-01-14 · v2

204.188.197.0/24

Risk Max 3 LOW Footprint 2.344% Hits 31
Prefix / IP version
/24 · IPv4
Network
204.188.197.0
Broadcast
204.188.197.255
Observed IPs / Subnet size
6 observed · 256 total
Centroid
41.8835 , -87.63050000000001
Hits / Errors
31 hits · 16 errors
First / Last seen
2025-05-26 23:25 · 2025-05-30 07:06
Top ASN
AS46844 · Sharktech
Top organization / ISP
Window / Updated
2025-05-26 → 2025-06-02 · Updated 2026-01-14 · v2

103.90.163.0/24

Risk Max 3 LOW Footprint 0.391% Hits 171
Prefix / IP version
/24 · IPv4
Network
103.90.163.0
Broadcast
103.90.163.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6297
Hits / Errors
171 hits · 0 errors
First / Last seen
2024-01-14 02:46 · 2024-01-14 02:47
Top ASN
AS36007 · Kamatera, Inc.
Top organization / ISP
Window / Updated
2024-01-08 → 2024-01-15 · Updated 2026-01-14 · v2

52.159.85.0/24

Risk Max 3 LOW Footprint 0.391% Hits 12
Prefix / IP version
/24 · IPv4
Network
52.159.85.0
Broadcast
52.159.85.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8819 , -87.6278
Hits / Errors
12 hits · 0 errors
First / Last seen
2023-07-15 17:31 · 2023-07-15 17:31
Top ASN
Window / Updated
2023-07-10 → 2023-07-17 · Updated 2026-01-14 · v2

73.110.50.0/24

Risk Max 2 LOW Footprint 0.391% Hits 64
Prefix / IP version
/24 · IPv4
Network
73.110.50.0
Broadcast
73.110.50.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8502 , -87.6736
Hits / Errors
64 hits · 6 errors
First / Last seen
2024-12-03 05:51 · 2024-12-03 05:52
Window / Updated
2024-12-02 → 2024-12-09 · Updated 2026-01-14 · v2

207.211.167.0/24

Risk Max 2 LOW Footprint 0.391% Hits 18
Prefix / IP version
/24 · IPv4
Network
207.211.167.0
Broadcast
207.211.167.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8486 , -87.6288
Hits / Errors
18 hits · 5 errors
First / Last seen
2025-04-23 13:14 · 2025-04-23 13:14
Top ASN
AS31898 · Oracle Corporation
Top organization / ISP
Window / Updated
2025-04-21 → 2025-04-28 · Updated 2026-01-14 · v2

185.180.143.0/24

Risk Max 1 LOW Footprint 1.172% Hits 64
Prefix / IP version
/24 · IPv4
Network
185.180.143.0
Broadcast
185.180.143.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
41.8781 , -87.6298
Hits / Errors
64 hits · 15 errors
First / Last seen
2024-06-11 03:10 · 2024-06-12 11:15
Window / Updated
2024-06-10 → 2024-06-17 · Updated 2026-01-14 · v2

108.163.225.0/24

Risk Max 1 LOW Footprint 0.391% Hits 344
Prefix / IP version
/24 · IPv4
Network
108.163.225.0
Broadcast
108.163.225.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6298
Hits / Errors
344 hits · 172 errors
First / Last seen
2025-01-08 09:32 · 2025-01-09 07:21
Top ASN
Top organization / ISP
Window / Updated
2025-01-06 → 2025-01-13 · Updated 2026-01-14 · v2

104.28.103.0/24

Risk Max 1 LOW Footprint 0.391% Hits 93
Prefix / IP version
/24 · IPv4
Network
104.28.103.0
Broadcast
104.28.103.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
93 hits · 1 errors
First / Last seen
2025-07-20 14:42 · 2025-07-20 14:43
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2025-07-14 → 2025-07-21 · Updated 2026-01-14 · v2

154.16.192.0/24

Risk Max 1 LOW Footprint 0.391% Hits 48
Prefix / IP version
/24 · IPv4
Network
154.16.192.0
Broadcast
154.16.192.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
48 hits · 6 errors
First / Last seen
2025-05-24 12:11 · 2025-05-24 12:11
Top ASN
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

76.16.1.0/24

Risk Max 1 LOW Footprint 0.391% Hits 34
Prefix / IP version
/24 · IPv4
Network
76.16.1.0
Broadcast
76.16.1.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.9032 , -87.6383
Hits / Errors
34 hits · 0 errors
First / Last seen
2024-12-03 00:02 · 2024-12-03 00:02
Window / Updated
2024-12-02 → 2024-12-09 · Updated 2026-01-14 · v2

172.81.131.0/24

Risk Max 1 LOW Footprint 0.391% Hits 17
Prefix / IP version
/24 · IPv4
Network
172.81.131.0
Broadcast
172.81.131.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8486 , -87.6288
Hits / Errors
17 hits · 0 errors
First / Last seen
2024-01-28 09:17 · 2024-01-28 09:17
Top ASN
AS27176 · DataWagon LLC
Top organization / ISP
Window / Updated
2024-01-22 → 2024-01-29 · Updated 2026-01-14 · v2

52.162.218.0/24

Risk Max 1 LOW Footprint 0.391% Hits 9
Prefix / IP version
/24 · IPv4
Network
52.162.218.0
Broadcast
52.162.218.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8819 , -87.6278
Hits / Errors
9 hits · 0 errors
First / Last seen
2023-07-31 10:57 · 2023-08-05 20:29
Top ASN
Window / Updated
2023-07-31 → 2023-08-07 · Updated 2026-01-14 · v2

68.235.48.0/24

Risk Max 1 LOW Footprint 0.391% Hits 8
Prefix / IP version
/24 · IPv4
Network
68.235.48.0
Broadcast
68.235.48.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.871 , -87.6289
Hits / Errors
8 hits · 0 errors
First / Last seen
2023-09-26 07:55 · 2023-09-26 14:10
Top ASN
AS11878 · tzulo, inc.
Top organization / ISP
Window / Updated
2023-09-25 → 2023-10-02 · Updated 2026-01-14 · v2

20.241.29.0/24

Risk Max 1 LOW Footprint 0.391% Hits 6
Prefix / IP version
/24 · IPv4
Network
20.241.29.0
Broadcast
20.241.29.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8819 , -87.6278
Hits / Errors
6 hits · 0 errors
First / Last seen
2024-12-17 04:07 · 2024-12-20 10:14
Top ASN
Window / Updated
2024-12-16 → 2024-12-23 · Updated 2026-01-14 · v2

166.1.173.0/24

Risk Max 1 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
166.1.173.0
Broadcast
166.1.173.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8403 , -87.6137
Hits / Errors
4 hits · 0 errors
First / Last seen
2025-03-06 04:19 · 2025-03-06 04:19
Top ASN
AS399820 · Atomic Networks LLC
Top organization / ISP
Window / Updated
2025-03-03 → 2025-03-10 · Updated 2026-01-14 · v2

50.21.186.0/24

Risk Max 1 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
50.21.186.0
Broadcast
50.21.186.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8781 , -87.6298
Hits / Errors
4 hits · 2 errors
First / Last seen
2024-02-21 13:00 · 2024-02-21 13:00
Top ASN
AS8560 · IONOS SE
Top organization / ISP
Window / Updated
2024-02-19 → 2024-02-26 · Updated 2026-01-14 · v2

172.232.5.0/24

Risk Max 1 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.232.5.0
Broadcast
172.232.5.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
4 hits · 0 errors
First / Last seen
2023-11-08 15:46 · 2023-11-08 15:55
Top ASN
Window / Updated
2023-11-06 → 2023-11-13 · Updated 2026-01-14 · v2

20.125.213.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
20.125.213.0
Broadcast
20.125.213.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8819 , -87.6278
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-01-12 06:31 · 2025-01-12 06:31
Top ASN
Window / Updated
2025-01-06 → 2025-01-13 · Updated 2026-01-14 · v2

209.50.58.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
209.50.58.0
Broadcast
209.50.58.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.4532 , -112.0748
Hits / Errors
2 hits · 1 errors
First / Last seen
2024-02-18 21:09 · 2024-02-18 21:09
Top ASN
AS25697 · UpCloud USA Inc
Top organization / ISP
Top geo
Window / Updated
2024-02-12 → 2024-02-19 · Updated 2026-01-14 · v2

204.188.215.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
204.188.215.0
Broadcast
204.188.215.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
2 hits · 1 errors
First / Last seen
2023-11-03 19:35 · 2023-11-03 19:35
Top ASN
AS46844 · Sharktech
Top organization / ISP
Window / Updated
2023-10-30 → 2023-11-06 · Updated 2026-01-14 · v2

45.41.206.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
45.41.206.0
Broadcast
45.41.206.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
2 hits · 0 errors
First / Last seen
2023-08-05 13:17 · 2023-08-05 13:17
Top ASN
AS32181 · GigeNET
Top organization / ISP
Window / Updated
2023-07-31 → 2023-08-07 · Updated 2026-01-14 · v2

77.90.40.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
77.90.40.0
Broadcast
77.90.40.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.9007 , -87.6531
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-04-17 00:59 · 2025-04-17 00:59
Top ASN
AS215292 · Gravhosting Ltd
Top organization / ISP
Window / Updated
2025-04-14 → 2025-04-21 · Updated 2026-01-14 · v2

40.77.202.0/24

Risk Max LOW Footprint 6.250% Hits 99
Prefix / IP version
/24 · IPv4
Network
40.77.202.0
Broadcast
40.77.202.255
Observed IPs / Subnet size
16 observed · 256 total
Centroid
41.88189999999999 , -87.6278
Hits / Errors
99 hits · 0 errors
First / Last seen
2025-05-26 03:19 · 2025-05-31 20:53
Top ASN
Window / Updated
2025-05-26 → 2025-06-02 · Updated 2026-01-14 · v2

64.44.106.0/24

Risk Max LOW Footprint 2.344% Hits 15
Prefix / IP version
/24 · IPv4
Network
64.44.106.0
Broadcast
64.44.106.255
Observed IPs / Subnet size
6 observed · 256 total
Centroid
41.88790000000001 , -88.1998
Hits / Errors
15 hits · 0 errors
First / Last seen
2025-06-19 22:50 · 2025-06-19 23:11
Top ASN
Window / Updated
2025-06-16 → 2025-06-23 · Updated 2026-01-14 · v2

64.44.105.0/24

Risk Max LOW Footprint 1.953% Hits 13
Prefix / IP version
/24 · IPv4
Network
64.44.105.0
Broadcast
64.44.105.255
Observed IPs / Subnet size
5 observed · 256 total
Centroid
41.887899999999995 , -88.1998
Hits / Errors
13 hits · 0 errors
First / Last seen
2025-06-19 22:54 · 2025-06-19 23:13
Top ASN
Window / Updated
2025-06-16 → 2025-06-23 · Updated 2026-01-14 · v2

172.183.222.0/24

Risk Max LOW Footprint 1.562% Hits 7
Prefix / IP version
/24 · IPv4
Network
172.183.222.0
Broadcast
172.183.222.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
41.88190000000001 , -87.6278
Hits / Errors
7 hits · 1 errors
First / Last seen
2025-12-17 12:10 · 2025-12-17 23:37
Top ASN
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2

104.152.52.0/24

Risk Max LOW Footprint 1.562% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.152.52.0
Broadcast
104.152.52.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
41.8911 , -87.6246
Hits / Errors
4 hits · 4 errors
First / Last seen
2025-11-23 05:44 · 2025-11-23 05:44
Top ASN
AS51088 · A2B IP B.V.
Top organization / ISP
Window / Updated
2025-11-17 → 2025-11-24 · Updated 2026-01-14 · v2

181.214.107.0/24

Risk Max LOW Footprint 1.562% Hits 4
Prefix / IP version
/24 · IPv4
Network
181.214.107.0
Broadcast
181.214.107.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
4 hits · 1 errors
First / Last seen
2025-05-05 01:09 · 2025-05-06 10:38
Top ASN
Top organization / ISP
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

172.59.188.0/24

Risk Max LOW Footprint 1.562% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.188.0
Broadcast
172.59.188.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
4 hits · 2 errors
First / Last seen
2025-05-05 03:28 · 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

104.28.97.0/24

Risk Max LOW Footprint 1.172% Hits 21
Prefix / IP version
/24 · IPv4
Network
104.28.97.0
Broadcast
104.28.97.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
21 hits · 0 errors
First / Last seen
2025-07-23 18:13 · 2025-07-23 19:55
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

40.77.139.0/24

Risk Max LOW Footprint 1.172% Hits 12
Prefix / IP version
/24 · IPv4
Network
40.77.139.0
Broadcast
40.77.139.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
41.8819 , -87.6278
Hits / Errors
12 hits · 0 errors
First / Last seen
2025-07-23 21:06 · 2025-07-26 14:49
Top ASN
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2
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