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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: SDN Communications Inc. · Clear
Snapshot 2026-01-24 Results 10 Page 1 / 1

216.106.218.0/24

Risk Max — LOW Footprint 0.391% Hits 18
Prefix / IP version
/24 · IPv4
Network
216.106.218.0
Broadcast
216.106.218.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
44.3232 , -96.9192
Hits / Errors
18 hits · 0 errors
First / Last seen
2025-03-04 06:25 · 2025-03-04 06:26
Top ASN
AS13576 · SOUTH DAKOTA NETWORK
Top organization / ISP
Valley Telephone Company · SDN Communications Inc.
Top geo
United States · South Dakota · Volga
Window / Updated
2025-03-03 → 2025-03-10 · Updated 2026-01-14 · v2
Open report →

216.249.202.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
216.249.202.0
Broadcast
216.249.202.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.5856 , -96.583
Hits / Errors
2 hits · 2 errors
First / Last seen
2025-06-24 08:49 · 2025-06-24 08:49
Top ASN
AS401415 · Alliance Communications
Top organization / ISP
SDN Communications Inc. · Alliance Communications
Top geo
United States · South Dakota · Brandon
Window / Updated
2025-06-23 → 2025-06-30 · Updated 2026-01-14 · v2
Open report →

216.106.215.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
216.106.215.0
Broadcast
216.106.215.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.3479 , -96.883
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-06 02:29 · 2025-05-06 05:07
Top ASN
AS401415 · Alliance Communications
Top organization / ISP
SDN Communications Inc. · Alliance Communications
Top geo
United States · South Dakota · Lennox
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2
Open report →

216.106.214.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
216.106.214.0
Broadcast
216.106.214.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.3479 , -96.883
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-05-06 04:20 · 2025-05-06 04:20
Top ASN
AS401415 · Alliance Communications
Top organization / ISP
SDN Communications Inc. · Alliance Communications
Top geo
United States · South Dakota · Lennox
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2
Open report →

66.231.25.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
66.231.25.0
Broadcast
66.231.25.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.3869 , -98.8445
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-28 03:21 · 2025-08-28 03:21
Top ASN
AS13576 · SOUTH DAKOTA NETWORK
Top organization / ISP
Midstate communications · SDN Communications Inc.
Top geo
United States · South Dakota · Platte
Window / Updated
2025-08-25 → 2025-09-01 · Updated 2026-01-14 · v2
Open report →

216.249.237.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
216.249.237.0
Broadcast
216.249.237.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.7111 , -96.5157
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-22 19:21 · 2025-05-22 19:21
Top ASN
AS401415 · Alliance Communications
Top organization / ISP
SDN Communications Inc. · Alliance Communications
Top geo
United States · South Dakota · Garretson
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2
Open report →

216.249.254.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
216.249.254.0
Broadcast
216.249.254.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.0117 , -99.9557
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-06 14:21 · 2025-05-06 14:21
Top ASN
AS13576 · SOUTH DAKOTA NETWORK
Top organization / ISP
Venture Communications · SDN Communications Inc.
Top geo
United States · South Dakota · Gettysburg
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2
Open report →

216.249.234.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
216.249.234.0
Broadcast
216.249.234.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.7111 , -96.5157
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-05 18:28 · 2025-05-05 18:28
Top ASN
AS401415 · Alliance Communications
Top organization / ISP
SDN Communications Inc. · Alliance Communications
Top geo
United States · South Dakota · Garretson
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2
Open report →

216.249.235.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
216.249.235.0
Broadcast
216.249.235.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.7111 , -96.5157
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-05 17:17 · 2025-05-05 17:17
Top ASN
AS401415 · Alliance Communications
Top organization / ISP
SDN Communications Inc. · Alliance Communications
Top geo
United States · South Dakota · Garretson
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2
Open report →

208.53.224.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
208.53.224.0
Broadcast
208.53.224.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
44.708 , -100.0598
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-05 16:15 · 2025-05-05 16:15
Top ASN
AS13576 · SOUTH DAKOTA NETWORK
Top organization / ISP
Venture Communications · SDN Communications Inc.
Top geo
United States · South Dakota · Onida
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2
Open report →