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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.

172.59.140.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.140.0
Broadcast
172.59.140.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.4409 , -79.9857
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.59.218.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.218.0
Broadcast
172.59.218.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.59.26.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.26.0
Broadcast
172.59.26.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.0242 , -80.6628
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.59.65.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.65.0
Broadcast
172.59.65.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.3958 , -81.6893
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.124.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.124.0
Broadcast
172.56.124.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.3888 , -83.1895
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.217.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.217.0
Broadcast
172.56.217.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.9739 , -75.1456
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.226.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.226.0
Broadcast
172.56.226.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.4663 , -86.808
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.23.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.23.0
Broadcast
172.56.23.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
32.7202 , -97.264
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.29.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.29.0
Broadcast
172.56.29.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.9843 , -75.2266
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.59.104.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.104.0
Broadcast
172.59.104.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.0566 , -87.9347
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.59.208.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.208.0
Broadcast
172.59.208.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.59.68.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.68.0
Broadcast
172.59.68.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.362 , -81.6919
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.199.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.199.0
Broadcast
172.56.199.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.428 , -71.0618
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.252.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.252.0
Broadcast
172.56.252.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.7914 , -86.2675
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.69.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.69.0
Broadcast
172.56.69.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.7485 , -84.3871
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.70.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.70.0
Broadcast
172.56.70.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.7485 , -84.3871
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.58.126.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.58.126.0
Broadcast
172.58.126.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.7256 , -117.9119
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.58.181.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.58.181.0
Broadcast
172.58.181.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
32.746 , -96.9978
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.59.113.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.59.113.0
Broadcast
172.59.113.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.2204 , -77.288
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

166.181.82.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
166.181.82.0
Broadcast
166.181.82.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.8075 , -91.1129
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS6614 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.112.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.112.0
Broadcast
172.56.112.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8578 , -71.4377
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.13.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.13.0
Broadcast
172.56.13.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
44.98 , -93.2638
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.153.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.153.0
Broadcast
172.56.153.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.5946 , -121.179
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.155.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.155.0
Broadcast
172.56.155.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
44.0582 , -121.315
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.162.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.162.0
Broadcast
172.56.162.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7035 , -73.9235
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.171.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.171.0
Broadcast
172.56.171.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.7035 , -73.9235
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.187.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.187.0
Broadcast
172.56.187.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
34.0038 , -117.446
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.188.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.188.0
Broadcast
172.56.188.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
34.0038 , -117.446
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.196.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.196.0
Broadcast
172.56.196.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
42.2904 , -71.0712
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.227.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.227.0
Broadcast
172.56.227.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.4663 , -86.808
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.27.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.27.0
Broadcast
172.56.27.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.8271 , -73.9359
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.3.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.3.0
Broadcast
172.56.3.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
26.6462 , -81.8455
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.33.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.33.0
Broadcast
172.56.33.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
38.8892 , -76.9417
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.45.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.45.0
Broadcast
172.56.45.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.8004 , -73.9504
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.80.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.80.0
Broadcast
172.56.80.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.5141 , -112.1235
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.56.90.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.56.90.0
Broadcast
172.56.90.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.491 , -112.2491
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.58.115.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.58.115.0
Broadcast
172.58.115.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.7256 , -117.9119
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.58.148.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.58.148.0
Broadcast
172.58.148.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.6484 , -87.1664
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.58.165.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.58.165.0
Broadcast
172.58.165.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.58.212.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.58.212.0
Broadcast
172.58.212.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.9555 , -118.2863
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2