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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.

8.216.82.0/24

Risk Max 4 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
8.216.82.0
Broadcast
8.216.82.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
4 hits · 2 errors
First / Last seen
2024-11-10 22:30 · 2024-11-10 22:30
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-11-04 → 2024-11-11 · Updated 2026-01-14 · v2

74.176.69.0/24

Risk Max 3 LOW Footprint 0.391% Hits 281
Prefix / IP version
/24 · IPv4
Network
74.176.69.0
Broadcast
74.176.69.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
281 hits · 139 errors
First / Last seen
2025-10-11 14:10 · 2025-10-11 14:37
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-10-06 → 2025-10-13 · Updated 2026-01-14 · v2

172.192.51.0/24

Risk Max 3 LOW Footprint 0.391% Hits 163
Prefix / IP version
/24 · IPv4
Network
172.192.51.0
Broadcast
172.192.51.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
163 hits · 80 errors
First / Last seen
2025-10-28 01:09 · 2025-10-28 01:10
Top ASN
AS18747 · IFX Corporation
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-10-27 → 2025-11-03 · Updated 2026-01-14 · v2

74.176.199.0/24

Risk Max 3 LOW Footprint 0.391% Hits 150
Prefix / IP version
/24 · IPv4
Network
74.176.199.0
Broadcast
74.176.199.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
150 hits · 73 errors
First / Last seen
2025-10-15 07:53 · 2025-10-15 07:54
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-10-13 → 2025-10-20 · Updated 2026-01-14 · v2

74.176.198.0/24

Risk Max 3 LOW Footprint 0.391% Hits 150
Prefix / IP version
/24 · IPv4
Network
74.176.198.0
Broadcast
74.176.198.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
150 hits · 73 errors
First / Last seen
2025-10-15 04:04 · 2025-10-15 04:05
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-10-13 → 2025-10-20 · Updated 2026-01-14 · v2

150.230.202.0/24

Risk Max 3 LOW Footprint 0.391% Hits 41
Prefix / IP version
/24 · IPv4
Network
150.230.202.0
Broadcast
150.230.202.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.798 , 140.1803
Hits / Errors
41 hits · 39 errors
First / Last seen
2025-05-16 08:08 · 2025-05-16 08:08
Top ASN
AS31898 · Oracle Corporation
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-05-12 → 2025-05-19 · Updated 2026-01-14 · v2

20.222.237.0/24

Risk Max 3 LOW Footprint 0.391% Hits 8
Prefix / IP version
/24 · IPv4
Network
20.222.237.0
Broadcast
20.222.237.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
8 hits · 0 errors
First / Last seen
2025-05-26 02:21 · 2025-05-26 02:21
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-05-26 → 2025-06-02 · Updated 2026-01-14 · v2

154.31.114.0/24

Risk Max 3 LOW Footprint 0.391% Hits 7
Prefix / IP version
/24 · IPv4
Network
154.31.114.0
Broadcast
154.31.114.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6164 , 139.7425
Hits / Errors
7 hits · 6 errors
First / Last seen
2025-04-26 06:34 · 2025-04-26 06:34
Top ASN
Top organization / ISP
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-04-21 → 2025-04-28 · Updated 2026-01-14 · v2

8.216.81.0/24

Risk Max 3 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
8.216.81.0
Broadcast
8.216.81.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
4 hits · 3 errors
First / Last seen
2024-11-20 04:33 · 2024-11-20 04:33
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-11-18 → 2024-11-25 · Updated 2026-01-14 · v2

4.189.152.0/24

Risk Max 2 LOW Footprint 0.391% Hits 196
Prefix / IP version
/24 · IPv4
Network
4.189.152.0
Broadcast
4.189.152.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
196 hits · 79 errors
First / Last seen
2025-11-25 18:57 · 2025-11-25 18:59
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2

4.241.208.0/24

Risk Max 2 LOW Footprint 0.391% Hits 160
Prefix / IP version
/24 · IPv4
Network
4.241.208.0
Broadcast
4.241.208.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
160 hits · 57 errors
First / Last seen
2025-11-25 23:07 · 2025-11-25 23:10
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2

185.220.238.0/24

Risk Max 2 LOW Footprint 0.391% Hits 79
Prefix / IP version
/24 · IPv4
Network
185.220.238.0
Broadcast
185.220.238.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
79 hits · 0 errors
First / Last seen
2025-04-23 18:46 · 2025-04-24 02:17
Top ASN
AS38136 · Akari Networks
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-04-21 → 2025-04-28 · Updated 2026-01-14 · v2

43.163.220.0/24

Risk Max 2 LOW Footprint 0.391% Hits 58
Prefix / IP version
/24 · IPv4
Network
43.163.220.0
Broadcast
43.163.220.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
58 hits · 25 errors
First / Last seen
2023-11-20 05:32 · 2023-11-20 05:33
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2023-11-20 → 2023-11-27 · Updated 2026-01-14 · v2

47.79.40.0/24

Risk Max 2 LOW Footprint 0.391% Hits 53
Prefix / IP version
/24 · IPv4
Network
47.79.40.0
Broadcast
47.79.40.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
53 hits · 49 errors
First / Last seen
2025-06-21 23:30 · 2025-06-21 23:35
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-06-16 → 2025-06-23 · Updated 2026-01-14 · v2

48.218.66.0/24

Risk Max 2 LOW Footprint 0.391% Hits 46
Prefix / IP version
/24 · IPv4
Network
48.218.66.0
Broadcast
48.218.66.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
46 hits · 23 errors
First / Last seen
2025-11-10 00:56 · 2025-11-10 00:56
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-11-10 → 2025-11-17 · Updated 2026-01-14 · v2

43.128.249.0/24

Risk Max 2 LOW Footprint 0.391% Hits 42
Prefix / IP version
/24 · IPv4
Network
43.128.249.0
Broadcast
43.128.249.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
42 hits · 40 errors
First / Last seen
2023-08-06 15:24 · 2023-08-06 15:24
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2023-07-31 → 2023-08-07 · Updated 2026-01-14 · v2

20.194.193.0/24

Risk Max 2 LOW Footprint 0.391% Hits 31
Prefix / IP version
/24 · IPv4
Network
20.194.193.0
Broadcast
20.194.193.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
31 hits · 26 errors
First / Last seen
2025-08-17 14:05 · 2025-08-17 14:07
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-08-11 → 2025-08-18 · Updated 2026-01-14 · v2

137.220.134.0/24

Risk Max 2 LOW Footprint 0.391% Hits 6
Prefix / IP version
/24 · IPv4
Network
137.220.134.0
Broadcast
137.220.134.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
6 hits · 6 errors
First / Last seen
2025-03-04 16:44 · 2025-03-04 16:44
Top ASN
AS152194 · CTG Server Limited
Top organization / ISP
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-03-03 → 2025-03-10 · Updated 2026-01-14 · v2

126.207.42.0/24

Risk Max 2 LOW Footprint 0.391% Hits 6
Prefix / IP version
/24 · IPv4
Network
126.207.42.0
Broadcast
126.207.42.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6552 , 139.761
Hits / Errors
6 hits · 4 errors
First / Last seen
2024-10-15 07:24 · 2024-10-15 07:24
Top ASN
AS17676 · SoftBank Corp.
Top organization / ISP
Top geo
Window / Updated
2024-10-14 → 2024-10-21 · Updated 2026-01-14 · v2

131.213.79.0/24

Risk Max 2 LOW Footprint 0.391% Hits 6
Prefix / IP version
/24 · IPv4
Network
131.213.79.0
Broadcast
131.213.79.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.703 , 139.8308
Hits / Errors
6 hits · 4 errors
First / Last seen
2024-10-01 22:30 · 2024-10-01 22:30
Top geo
Window / Updated
2024-09-30 → 2024-10-07 · Updated 2026-01-14 · v2

47.74.40.0/24

Risk Max 2 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
47.74.40.0
Broadcast
47.74.40.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
4 hits · 4 errors
First / Last seen
2025-05-06 16:16 · 2025-05-06 16:16
Top organization / ISP
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

154.47.20.0/24

Risk Max 2 LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
154.47.20.0
Broadcast
154.47.20.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
3 hits · 1 errors
First / Last seen
2024-12-14 14:17 · 2024-12-14 14:17
Top ASN
AS212238 · Datacamp Limited
Top organization / ISP
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-12-09 → 2024-12-16 · Updated 2026-01-14 · v2

8.209.238.0/24

Risk Max 2 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
8.209.238.0
Broadcast
8.209.238.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-09-27 06:20 · 2025-09-27 06:20
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-09-22 → 2025-09-29 · Updated 2026-01-14 · v2

8.216.80.0/24

Risk Max 2 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
8.216.80.0
Broadcast
8.216.80.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
2 hits · 1 errors
First / Last seen
2024-11-26 03:59 · 2024-11-26 03:59
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-11-25 → 2024-12-02 · Updated 2026-01-14 · v2

8.216.122.0/24

Risk Max 2 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
8.216.122.0
Broadcast
8.216.122.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
2 hits · 1 errors
First / Last seen
2024-10-06 01:03 · 2024-10-06 01:03
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-09-30 → 2024-10-07 · Updated 2026-01-14 · v2

43.167.243.0/24

Risk Max 2 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
43.167.243.0
Broadcast
43.167.243.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
2 hits · 1 errors
First / Last seen
2024-09-20 09:17 · 2024-09-20 09:17
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-09-16 → 2024-09-23 · Updated 2026-01-14 · v2

39.3.101.0/24

Risk Max 2 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
39.3.101.0
Broadcast
39.3.101.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.663 , 139.761
Hits / Errors
2 hits · 0 errors
First / Last seen
2023-06-22 06:50 · 2023-06-22 07:12
Top ASN
AS4725 · SoftBank Corp.
Top organization / ISP
Top geo
Window / Updated
2023-06-19 → 2023-06-26 · Updated 2026-01-14 · v2

20.18.71.0/24

Risk Max 2 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
20.18.71.0
Broadcast
20.18.71.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-12-28 23:00 · 2024-12-28 23:00
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-12-23 → 2024-12-30 · Updated 2026-01-14 · v2

133.9.37.0/24

Risk Max 1 LOW Footprint 0.391% Hits 138
Prefix / IP version
/24 · IPv4
Network
133.9.37.0
Broadcast
133.9.37.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.79 , 139.6359
Hits / Errors
138 hits · 0 errors
First / Last seen
2025-08-01 15:22 · 2025-08-01 15:25
Top ASN
AS17956 · WASEDA University
Top organization / ISP
Top geo
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

4.241.179.0/24

Risk Max 1 LOW Footprint 0.391% Hits 80
Prefix / IP version
/24 · IPv4
Network
4.241.179.0
Broadcast
4.241.179.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
80 hits · 39 errors
First / Last seen
2025-11-25 15:34 · 2025-11-25 15:35
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2

34.84.111.0/24

Risk Max 1 LOW Footprint 0.391% Hits 72
Prefix / IP version
/24 · IPv4
Network
34.84.111.0
Broadcast
34.84.111.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6761 , 139.6503
Hits / Errors
72 hits · 0 errors
First / Last seen
2023-11-09 12:08 · 2023-11-09 12:11
Top ASN
AS396982 · Google LLC
Top organization / ISP
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2023-11-06 → 2023-11-13 · Updated 2026-01-14 · v2

52.185.159.0/24

Risk Max 1 LOW Footprint 0.391% Hits 58
Prefix / IP version
/24 · IPv4
Network
52.185.159.0
Broadcast
52.185.159.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
58 hits · 28 errors
First / Last seen
2025-10-22 08:29 · 2025-10-22 08:29
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-10-20 → 2025-10-27 · Updated 2026-01-14 · v2

48.210.8.0/24

Risk Max 1 LOW Footprint 0.391% Hits 49
Prefix / IP version
/24 · IPv4
Network
48.210.8.0
Broadcast
48.210.8.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
49 hits · 17 errors
First / Last seen
2025-10-22 11:20 · 2025-10-22 11:21
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-10-20 → 2025-10-27 · Updated 2026-01-14 · v2

43.163.241.0/24

Risk Max 1 LOW Footprint 0.391% Hits 30
Prefix / IP version
/24 · IPv4
Network
43.163.241.0
Broadcast
43.163.241.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
30 hits · 29 errors
First / Last seen
2023-10-01 03:11 · 2023-10-01 03:11
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2023-09-25 → 2023-10-02 · Updated 2026-01-14 · v2

8.211.162.0/24

Risk Max 1 LOW Footprint 0.391% Hits 24
Prefix / IP version
/24 · IPv4
Network
8.211.162.0
Broadcast
8.211.162.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
24 hits · 20 errors
First / Last seen
2025-12-17 09:04 · 2025-12-17 09:04
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2

35.78.80.0/24

Risk Max 1 LOW Footprint 0.391% Hits 22
Prefix / IP version
/24 · IPv4
Network
35.78.80.0
Broadcast
35.78.80.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6895 , 139.692
Hits / Errors
22 hits · 1 errors
First / Last seen
2024-05-01 13:20 · 2024-05-01 13:21
Top ASN
AS16509 · Amazon.com, Inc.
Top organization / ISP
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2024-04-29 → 2024-05-06 · Updated 2026-01-14 · v2

43.133.181.0/24

Risk Max 1 LOW Footprint 0.391% Hits 20
Prefix / IP version
/24 · IPv4
Network
43.133.181.0
Broadcast
43.133.181.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
20 hits · 19 errors
First / Last seen
2023-08-08 02:20 · 2023-08-08 02:20
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2023-08-07 → 2023-08-14 · Updated 2026-01-14 · v2

132.145.114.0/24

Risk Max 1 LOW Footprint 0.391% Hits 16
Prefix / IP version
/24 · IPv4
Network
132.145.114.0
Broadcast
132.145.114.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.798 , 140.1803
Hits / Errors
16 hits · 0 errors
First / Last seen
2025-07-17 21:13 · 2025-07-17 21:13
Top ASN
AS31898 · Oracle Corporation
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-07-14 → 2025-07-21 · Updated 2026-01-14 · v2

20.63.140.0/24

Risk Max 1 LOW Footprint 0.391% Hits 12
Prefix / IP version
/24 · IPv4
Network
20.63.140.0
Broadcast
20.63.140.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.68 , 139.77
Hits / Errors
12 hits · 6 errors
First / Last seen
2023-11-14 08:06 · 2023-11-14 08:06
Top ASN
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2023-11-13 → 2023-11-20 · Updated 2026-01-14 · v2

124.156.231.0/24

Risk Max 1 LOW Footprint 0.391% Hits 8
Prefix / IP version
/24 · IPv4
Network
124.156.231.0
Broadcast
124.156.231.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6893 , 139.6899
Hits / Errors
8 hits · 2 errors
First / Last seen
2025-09-10 03:12 · 2025-09-10 03:12
Top organization / ISP
Top geo
Japan · Tokyo · Tokyo
Window / Updated
2025-09-08 → 2025-09-15 · Updated 2026-01-14 · v2