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.
Search
Active filter:
Critical Hub Networks
·
Clear
Snapshot
2026-03-04
Results
12
Page
1
/
1
209.91.237.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
5
Prefix / IP version
/24 · IPv4
Network
209.91.237.0
Broadcast
209.91.237.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4655 , -66.1057
Hits / Errors
5
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-26 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Caribbean Internet Service
·
Critical Hub Networks
Top geo
Puerto Rico
·
San Juan
·
San Juan
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
38.27.99.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
4
Prefix / IP version
/24 · IPv4
Network
38.27.99.0
Broadcast
38.27.99.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4655 , -66.1057
Hits / Errors
4
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-26 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Critical Hub Networks
·
Critical Hub Networks
Top geo
Puerto Rico
·
San Juan
·
San Juan
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
38.27.103.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
38.27.103.0
Broadcast
38.27.103.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4163 , -66.064
Hits / Errors
2
hits ·
0
errors
First / Last seen
2026-02-28 02:00 · 2026-03-02 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Critical Hub Networks
·
Critical Hub Networks
Top geo
Puerto Rico
·
San Juan
·
Eleanor Roosevelt
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
140.174.250.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
140.174.250.0
Broadcast
140.174.250.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4163 , -66.064
Hits / Errors
2
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-24 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
NTT America, Inc
·
Critical Hub Networks
Top geo
Puerto Rico
·
San Juan
·
Eleanor Roosevelt
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
140.174.241.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
140.174.241.0
Broadcast
140.174.241.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4153 , -66.0593
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
NTT America
·
Critical Hub Network, Inc
Top geo
Puerto Rico
·
San Juan
·
San Juan
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
204.2.89.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
204.2.89.0
Broadcast
204.2.89.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4163 , -66.064
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
NTT Communications
·
Critical Hub Networks
Top geo
Puerto Rico
·
San Juan
·
Eleanor Roosevelt
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
209.91.194.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
209.91.194.0
Broadcast
209.91.194.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
25.7821 , -80.1928
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Caribbean Internet Service
·
Critical Hub Networks
Top geo
United States
·
Florida
·
Miami
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
140.174.255.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
140.174.255.0
Broadcast
140.174.255.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4663 , -66.1057
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
NTT America - Northern CA
·
Critical Hub Networks
Top geo
Puerto Rico
·
San Juan
·
San Juan
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
209.91.207.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
209.91.207.0
Broadcast
209.91.207.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.3547 , -66.0074
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Caribbean Internet Service
·
Critical Hub Networks
Top geo
Puerto Rico
·
Trujillo Alto
·
Trujillo Alto
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
209.91.232.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
209.91.232.0
Broadcast
209.91.232.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4655 , -66.1057
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Caribbean Internet Service
·
Critical Hub Networks
Top geo
Puerto Rico
·
San Juan
·
San Juan
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
209.91.238.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
209.91.238.0
Broadcast
209.91.238.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
18.4413 , -66.1182
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Caribbean Internet Service
·
Critical Hub Networks
Top geo
Puerto Rico
·
Cataño
·
Cataño
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
38.90.29.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
38.90.29.0
Broadcast
38.90.29.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.0438 , -77.4874
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS23114 ·
Critical Hub Networks
Top organization / ISP
Critical Hub Networks
·
Critical Hub Networks
Top geo
United States
·
Virginia
·
Ashburn
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
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