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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.
Active filter: West Islip · Clear
Snapshot 2026-01-20 Results 6 Page 1 / 1

173.3.17.0/24

Risk Max — LOW Footprint 0.391% Hits 23
Prefix / IP version
/24 · IPv4
Network
173.3.17.0
Broadcast
173.3.17.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7058 , -73.3155
Hits / Errors
23 hits · 0 errors
First / Last seen
2025-05-04 22:42 · 2025-05-04 22:43
Top ASN
AS6128 · Cablevision Systems Corp.
Top organization / ISP
Optimum Online (Cablevision Systems) · Cablevision Systems Corp.
Top geo
United States · New York · West Islip
Window / Updated
2025-04-28 → 2025-05-05 · Updated 2026-01-14 · v2
Open report →

47.18.157.0/24

Risk Max — LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
47.18.157.0
Broadcast
47.18.157.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7058 , -73.3155
Hits / Errors
4 hits · 2 errors
First / Last seen
2024-04-25 01:27 · 2024-04-25 01:27
Top ASN
AS6128 · Cablevision Systems Corp.
Top organization / ISP
Optimum WiFi · Optimum Online (Cablevision Systems)
Top geo
United States · New York · West Islip
Window / Updated
2024-04-22 → 2024-04-29 · Updated 2026-01-14 · v2
Open report →

68.129.6.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
68.129.6.0
Broadcast
68.129.6.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7058 , -73.3155
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-08-26 09:54 · 2025-08-26 09:54
Top ASN
AS701 · Verizon Business
Top organization / ISP
MCI Communications Services, Inc. d/b/a Verizon Business · Verizon Communications
Top geo
United States · New York · West Islip
Window / Updated
2025-08-25 → 2025-09-01 · Updated 2026-01-14 · v2
Open report →

71.249.78.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
71.249.78.0
Broadcast
71.249.78.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7058 , -73.3155
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-20 06:34 · 2025-08-20 06:34
Top ASN
AS701 · Verizon Business
Top organization / ISP
MCI Communications Services, Inc. d/b/a Verizon Business · Verizon Communications
Top geo
United States · New York · West Islip
Window / Updated
2025-08-18 → 2025-08-25 · Updated 2026-01-14 · v2
Open report →

68.129.19.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
68.129.19.0
Broadcast
68.129.19.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7058 , -73.3155
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-07-23 20:00 · 2025-07-23 20:00
Top ASN
AS701 · Verizon Business
Top organization / ISP
MCI Communications Services, Inc. d/b/a Verizon Business · Verizon Communications
Top geo
United States · New York · West Islip
Window / Updated
2025-07-21 → 2025-07-28 · Updated 2026-01-14 · v2
Open report →

71.249.104.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
71.249.104.0
Broadcast
71.249.104.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7058 , -73.3155
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-02-15 06:52 · 2025-02-15 06:52
Top ASN
AS701 · Verizon Business
Top organization / ISP
MCI Communications Services, Inc. d/b/a Verizon Business · Verizon Communications
Top geo
United States · New York · West Islip
Window / Updated
2025-02-10 → 2025-02-17 · Updated 2026-01-14 · v2
Open report →