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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.

43.225.189.0/24

Risk Max 2 LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
43.225.189.0
Broadcast
43.225.189.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3574 , -71.0618
Hits / Errors
4 hits · 0 errors
First / Last seen
2025-03-20 02:28 · 2025-03-20 02:28
Top ASN
Window / Updated
2025-03-17 → 2025-03-24 · Updated 2026-01-14 · v2

204.8.158.0/24

Risk Max LOW Footprint 1.172% Hits 13
Prefix / IP version
/24 · IPv4
Network
204.8.158.0
Broadcast
204.8.158.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
42.3464 , -71.0975
Hits / Errors
13 hits · 0 errors
First / Last seen
2025-04-25 20:50 · 2025-04-25 20:50
Top ASN
AS10961 · Boston GigaPoP
Top organization / ISP
Window / Updated
2025-04-21 → 2025-04-28 · Updated 2026-01-14 · v2

63.246.157.0/24

Risk Max LOW Footprint 0.781% Hits 11
Prefix / IP version
/24 · IPv4
Network
63.246.157.0
Broadcast
63.246.157.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
42.360099999999996 , -71.0589
Hits / Errors
11 hits · 1 errors
First / Last seen
2025-11-06 22:43 · 2025-11-06 23:46
Top ASN
Top organization / ISP
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2

104.243.208.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.243.208.0
Broadcast
104.243.208.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
42.3611 , -71.0518
Hits / Errors
4 hits · 0 errors
First / Last seen
2025-05-20 08:01 · 2025-05-21 04:41
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

213.188.77.0/24

Risk Max LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
213.188.77.0
Broadcast
213.188.77.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
42.3601 , -71.0589
Hits / Errors
3 hits · 1 errors
First / Last seen
2025-07-25 13:16 · 2025-07-26 14:56
Top ASN
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

69.91.190.0/24

Risk Max LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
69.91.190.0
Broadcast
69.91.190.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
42.3611 , -71.0518
Hits / Errors
3 hits · 0 errors
First / Last seen
2025-05-20 20:29 · 2025-05-20 20:39
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

145.79.196.0/24

Risk Max LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
145.79.196.0
Broadcast
145.79.196.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
42.3574 , -71.0618
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-08-01 11:52 · 2025-08-02 13:09
Top ASN
AS212238 · Datacamp Limited
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

35.33.217.0/24

Risk Max LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
35.33.217.0
Broadcast
35.33.217.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
42.3574 , -71.0618
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-05 03:51 · 2025-05-05 09:48
Top ASN
AS398378 · Boost Mobile
Top organization / ISP
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

66.30.243.0/24

Risk Max LOW Footprint 0.391% Hits 119
Prefix / IP version
/24 · IPv4
Network
66.30.243.0
Broadcast
66.30.243.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3252 , -71.0951
Hits / Errors
119 hits · 0 errors
First / Last seen
2025-05-28 14:56 · 2025-05-28 15:03
Window / Updated
2025-05-26 → 2025-06-02 · Updated 2026-01-14 · v2

216.163.221.0/24

Risk Max LOW Footprint 0.391% Hits 68
Prefix / IP version
/24 · IPv4
Network
216.163.221.0
Broadcast
216.163.221.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.2904 , -71.0712
Hits / Errors
68 hits · 0 errors
First / Last seen
2025-05-21 16:47 · 2025-05-21 16:48
Top ASN
AS27370 · City of Boston
Top organization / ISP
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2

199.94.1.0/24

Risk Max LOW Footprint 0.391% Hits 60
Prefix / IP version
/24 · IPv4
Network
199.94.1.0
Broadcast
199.94.1.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3287 , -71.114
Hits / Errors
60 hits · 3 errors
First / Last seen
2024-10-09 20:22 · 2024-10-09 23:53
Top ASN
Top organization / ISP
Window / Updated
2024-10-07 → 2024-10-14 · Updated 2026-01-14 · v2

144.121.18.0/24

Risk Max LOW Footprint 0.391% Hits 29
Prefix / IP version
/24 · IPv4
Network
144.121.18.0
Broadcast
144.121.18.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3364 , -71.0326
Hits / Errors
29 hits · 0 errors
First / Last seen
2025-07-25 13:40 · 2025-07-25 13:41
Top ASN
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2

174.196.199.0/24

Risk Max LOW Footprint 0.391% Hits 21
Prefix / IP version
/24 · IPv4
Network
174.196.199.0
Broadcast
174.196.199.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3498 , -71.0765
Hits / Errors
21 hits · 0 errors
First / Last seen
2025-07-31 20:14 · 2025-07-31 20:14
Top ASN
AS6167 · Verizon Business
Top organization / ISP
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2

72.74.145.0/24

Risk Max LOW Footprint 0.391% Hits 21
Prefix / IP version
/24 · IPv4
Network
72.74.145.0
Broadcast
72.74.145.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.2904 , -71.0712
Hits / Errors
21 hits · 0 errors
First / Last seen
2025-04-14 21:57 · 2025-04-14 22:30
Top ASN
AS701 · Verizon Business
Top organization / ISP
Window / Updated
2025-04-14 → 2025-04-21 · Updated 2026-01-14 · v2

72.105.16.0/24

Risk Max LOW Footprint 0.391% Hits 21
Prefix / IP version
/24 · IPv4
Network
72.105.16.0
Broadcast
72.105.16.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3634 , -71.0713
Hits / Errors
21 hits · 0 errors
First / Last seen
2025-01-05 21:07 · 2025-01-05 21:11
Top ASN
AS6167 · Verizon Business
Top organization / ISP
Window / Updated
2024-12-30 → 2025-01-06 · Updated 2026-01-14 · v2

174.242.73.0/24

Risk Max LOW Footprint 0.391% Hits 18
Prefix / IP version
/24 · IPv4
Network
174.242.73.0
Broadcast
174.242.73.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.2904 , -71.0712
Hits / Errors
18 hits · 1 errors
First / Last seen
2025-01-03 02:16 · 2025-01-03 02:16
Top ASN
AS6167 · Verizon Business
Top organization / ISP
Window / Updated
2024-12-30 → 2025-01-06 · Updated 2026-01-14 · v2

174.226.80.0/24

Risk Max LOW Footprint 0.391% Hits 18
Prefix / IP version
/24 · IPv4
Network
174.226.80.0
Broadcast
174.226.80.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3634 , -71.0713
Hits / Errors
18 hits · 1 errors
First / Last seen
2024-12-30 06:39 · 2024-12-30 06:40
Top ASN
AS6167 · Verizon Business
Top organization / ISP
Window / Updated
2024-12-30 → 2025-01-06 · Updated 2026-01-14 · v2

163.116.144.0/24

Risk Max LOW Footprint 0.391% Hits 17
Prefix / IP version
/24 · IPv4
Network
163.116.144.0
Broadcast
163.116.144.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3574 , -71.0618
Hits / Errors
17 hits · 0 errors
First / Last seen
2025-01-24 05:23 · 2025-01-24 05:28
Top ASN
AS55256 · Netskope Inc
Top organization / ISP
Window / Updated
2025-01-20 → 2025-01-27 · Updated 2026-01-14 · v2

216.163.213.0/24

Risk Max LOW Footprint 0.391% Hits 17
Prefix / IP version
/24 · IPv4
Network
216.163.213.0
Broadcast
216.163.213.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.2904 , -71.0712
Hits / Errors
17 hits · 1 errors
First / Last seen
2025-01-21 15:28 · 2025-01-21 16:26
Top ASN
AS27370 · City of Boston
Top organization / ISP
Window / Updated
2025-01-20 → 2025-01-27 · Updated 2026-01-14 · v2

76.19.147.0/24

Risk Max LOW Footprint 0.391% Hits 16
Prefix / IP version
/24 · IPv4
Network
76.19.147.0
Broadcast
76.19.147.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3364 , -71.0326
Hits / Errors
16 hits · 0 errors
First / Last seen
2025-05-10 04:54 · 2025-05-10 05:05
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

73.61.7.0/24

Risk Max LOW Footprint 0.391% Hits 16
Prefix / IP version
/24 · IPv4
Network
73.61.7.0
Broadcast
73.61.7.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3498 , -71.0765
Hits / Errors
16 hits · 1 errors
First / Last seen
2025-01-12 05:11 · 2025-01-12 05:29
Window / Updated
2025-01-06 → 2025-01-13 · Updated 2026-01-14 · v2

50.170.99.0/24

Risk Max LOW Footprint 0.391% Hits 15
Prefix / IP version
/24 · IPv4
Network
50.170.99.0
Broadcast
50.170.99.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3464 , -71.0975
Hits / Errors
15 hits · 0 errors
First / Last seen
2025-03-19 14:11 · 2025-03-19 14:13
Window / Updated
2025-03-17 → 2025-03-24 · Updated 2026-01-14 · v2

136.226.73.0/24

Risk Max LOW Footprint 0.391% Hits 15
Prefix / IP version
/24 · IPv4
Network
136.226.73.0
Broadcast
136.226.73.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3574 , -71.0618
Hits / Errors
15 hits · 0 errors
First / Last seen
2025-01-10 21:51 · 2025-01-10 22:06
Top ASN
AS22616 · ZSCALER, INC.
Top organization / ISP
Window / Updated
2025-01-06 → 2025-01-13 · Updated 2026-01-14 · v2

174.169.98.0/24

Risk Max LOW Footprint 0.391% Hits 15
Prefix / IP version
/24 · IPv4
Network
174.169.98.0
Broadcast
174.169.98.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.364 , -71.0265
Hits / Errors
15 hits · 0 errors
First / Last seen
2024-10-06 22:37 · 2024-10-06 22:51
Window / Updated
2024-09-30 → 2024-10-07 · Updated 2026-01-14 · v2

86.161.37.0/24

Risk Max LOW Footprint 0.391% Hits 14
Prefix / IP version
/24 · IPv4
Network
86.161.37.0
Broadcast
86.161.37.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
52.9791 , -0.0269
Hits / Errors
14 hits · 0 errors
First / Last seen
2025-05-26 17:14 · 2025-05-26 17:14
Top ASN
Top organization / ISP
Top geo
Window / Updated
2025-05-26 → 2025-06-02 · Updated 2026-01-14 · v2

73.114.90.0/24

Risk Max LOW Footprint 0.391% Hits 14
Prefix / IP version
/24 · IPv4
Network
73.114.90.0
Broadcast
73.114.90.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3492 , -71.0658
Hits / Errors
14 hits · 0 errors
First / Last seen
2025-03-28 04:18 · 2025-03-28 04:20
Window / Updated
2025-03-24 → 2025-03-31 · Updated 2026-01-14 · v2

73.16.105.0/24

Risk Max LOW Footprint 0.391% Hits 14
Prefix / IP version
/24 · IPv4
Network
73.16.105.0
Broadcast
73.16.105.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.2904 , -71.0712
Hits / Errors
14 hits · 2 errors
First / Last seen
2024-02-01 01:27 · 2024-02-01 01:39
Window / Updated
2024-01-29 → 2024-02-05 · Updated 2026-01-14 · v2

73.61.52.0/24

Risk Max LOW Footprint 0.391% Hits 13
Prefix / IP version
/24 · IPv4
Network
73.61.52.0
Broadcast
73.61.52.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3498 , -71.0765
Hits / Errors
13 hits · 1 errors
First / Last seen
2024-10-14 15:51 · 2024-10-14 16:20
Window / Updated
2024-10-14 → 2024-10-21 · Updated 2026-01-14 · v2

38.122.126.0/24

Risk Max LOW Footprint 0.391% Hits 13
Prefix / IP version
/24 · IPv4
Network
38.122.126.0
Broadcast
38.122.126.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3574 , -71.0618
Hits / Errors
13 hits · 2 errors
First / Last seen
2024-10-01 19:07 · 2024-10-01 19:07
Top ASN
Top organization / ISP
Window / Updated
2024-09-30 → 2024-10-07 · Updated 2026-01-14 · v2

192.95.29.0/24

Risk Max LOW Footprint 0.391% Hits 13
Prefix / IP version
/24 · IPv4
Network
192.95.29.0
Broadcast
192.95.29.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3576 , -71.0514
Hits / Errors
13 hits · 1 errors
First / Last seen
2023-08-24 09:49 · 2023-08-24 09:50
Top ASN
AS16276 · OVH SAS
Top organization / ISP
Window / Updated
2023-08-21 → 2023-08-28 · Updated 2026-01-14 · v2

213.188.78.0/24

Risk Max LOW Footprint 0.391% Hits 12
Prefix / IP version
/24 · IPv4
Network
213.188.78.0
Broadcast
213.188.78.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3601 , -71.0589
Hits / Errors
12 hits · 4 errors
First / Last seen
2025-08-28 09:01 · 2025-08-28 09:01
Top ASN
Window / Updated
2025-08-25 → 2025-09-01 · Updated 2026-01-14 · v2

73.143.71.0/24

Risk Max LOW Footprint 0.391% Hits 12
Prefix / IP version
/24 · IPv4
Network
73.143.71.0
Broadcast
73.143.71.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3364 , -71.0326
Hits / Errors
12 hits · 1 errors
First / Last seen
2024-09-18 13:14 · 2024-09-18 13:14
Window / Updated
2024-09-16 → 2024-09-23 · Updated 2026-01-14 · v2

73.16.242.0/24

Risk Max LOW Footprint 0.391% Hits 11
Prefix / IP version
/24 · IPv4
Network
73.16.242.0
Broadcast
73.16.242.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.364 , -71.0265
Hits / Errors
11 hits · 0 errors
First / Last seen
2024-11-03 20:06 · 2024-11-03 20:08
Window / Updated
2024-10-28 → 2024-11-04 · Updated 2026-01-14 · v2

85.89.223.0/24

Risk Max LOW Footprint 0.391% Hits 5
Prefix / IP version
/24 · IPv4
Network
85.89.223.0
Broadcast
85.89.223.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3601 , -71.0589
Hits / Errors
5 hits · 0 errors
First / Last seen
2025-09-26 18:05 · 2025-09-26 18:06
Top ASN
Top organization / ISP
Window / Updated
2025-09-22 → 2025-09-29 · Updated 2026-01-14 · v2

73.61.4.0/24

Risk Max LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
73.61.4.0
Broadcast
73.61.4.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3498 , -71.0765
Hits / Errors
3 hits · 1 errors
First / Last seen
2025-10-11 12:07 · 2025-10-11 12:07
Window / Updated
2025-10-06 → 2025-10-13 · Updated 2026-01-14 · v2

202.81.222.0/24

Risk Max LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
202.81.222.0
Broadcast
202.81.222.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3601 , -71.0589
Hits / Errors
3 hits · 0 errors
First / Last seen
2025-09-27 00:25 · 2025-09-27 00:25
Top ASN
Top organization / ISP
Window / Updated
2025-09-22 → 2025-09-29 · Updated 2026-01-14 · v2

144.121.2.0/24

Risk Max LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
144.121.2.0
Broadcast
144.121.2.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3388 , -71.0726
Hits / Errors
3 hits · 0 errors
First / Last seen
2025-01-08 17:43 · 2025-01-08 17:43
Top ASN
Window / Updated
2025-01-06 → 2025-01-13 · Updated 2026-01-14 · v2

103.245.41.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
103.245.41.0
Broadcast
103.245.41.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3601 , -71.0589
Hits / Errors
2 hits · 1 errors
First / Last seen
2025-10-28 12:40 · 2025-10-28 12:40
Top ASN
Top organization / ISP
— · TOPFORMATINC
Window / Updated
2025-10-27 → 2025-11-03 · Updated 2026-01-14 · v2

45.120.188.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
45.120.188.0
Broadcast
45.120.188.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3601 , -71.0589
Hits / Errors
2 hits · 2 errors
First / Last seen
2025-10-28 11:36 · 2025-10-28 11:36
Top ASN
Window / Updated
2025-10-27 → 2025-11-03 · Updated 2026-01-14 · v2

213.188.71.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
213.188.71.0
Broadcast
213.188.71.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3601 , -71.0589
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-10-14 15:22 · 2025-10-14 15:22
Top ASN
Window / Updated
2025-10-13 → 2025-10-20 · Updated 2026-01-14 · v2
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