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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.

172.59.218.0/24

Risk Max 1 LOW Footprint 1.562% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.218.0
Broadcast
172.59.218.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.17.0/24

Risk Max LOW Footprint 5.078% Hits 19
Prefix / IP version
/24 · IPv4
Network
172.59.17.0
Broadcast
172.59.17.255
Observed IPs / Subnet size
13 observed · 256 total
Centroid
18.356389473684207 , -66.15153157894737
Hits / Errors
19 hits · 0 errors
First / Last seen
2026-03-01 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.16.0/24

Risk Max LOW Footprint 3.906% Hits 16
Prefix / IP version
/24 · IPv4
Network
172.59.16.0
Broadcast
172.59.16.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
18.1149125 , -66.640575
Hits / Errors
16 hits · 1 errors
First / Last seen
2026-03-01 02:00 · 2026-03-07 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.18.0/24

Risk Max LOW Footprint 3.906% Hits 12
Prefix / IP version
/24 · IPv4
Network
172.59.18.0
Broadcast
172.59.18.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
18.32166666666667 , -66.11496666666666
Hits / Errors
12 hits · 0 errors
First / Last seen
2026-03-01 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.19.0/24

Risk Max LOW Footprint 3.125% Hits 8
Prefix / IP version
/24 · IPv4
Network
172.59.19.0
Broadcast
172.59.19.255
Observed IPs / Subnet size
8 observed · 256 total
Centroid
18.271162500000003 , -66.213875
Hits / Errors
8 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.123.0/24

Risk Max LOW Footprint 1.953% Hits 7
Prefix / IP version
/24 · IPv4
Network
172.58.123.0
Broadcast
172.58.123.255
Observed IPs / Subnet size
5 observed · 256 total
Centroid
36.211085714285716 , -107.99281428571429
Hits / Errors
7 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.65.0/24

Risk Max LOW Footprint 1.953% Hits 6
Prefix / IP version
/24 · IPv4
Network
172.56.65.0
Broadcast
172.56.65.255
Observed IPs / Subnet size
5 observed · 256 total
Centroid
33.7485 , -84.38710000000002
Hits / Errors
6 hits · 0 errors
First / Last seen
2026-03-01 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.68.0/24

Risk Max LOW Footprint 1.953% Hits 5
Prefix / IP version
/24 · IPv4
Network
172.56.68.0
Broadcast
172.56.68.255
Observed IPs / Subnet size
5 observed · 256 total
Centroid
33.7485 , -84.3871
Hits / Errors
5 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.16.0/24

Risk Max LOW Footprint 1.562% Hits 6
Prefix / IP version
/24 · IPv4
Network
172.56.16.0
Broadcast
172.56.16.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
41.90975 , -87.72115000000001
Hits / Errors
6 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.213.0/24

Risk Max LOW Footprint 1.562% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.213.0
Broadcast
172.59.213.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.167.0/24

Risk Max LOW Footprint 1.172% Hits 7
Prefix / IP version
/24 · IPv4
Network
172.56.167.0
Broadcast
172.56.167.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
40.6939 , -73.92587142857143
Hits / Errors
7 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.28.0/24

Risk Max LOW Footprint 1.172% Hits 6
Prefix / IP version
/24 · IPv4
Network
172.56.28.0
Broadcast
172.56.28.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
39.9843 , -75.2266
Hits / Errors
6 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.219.0/24

Risk Max LOW Footprint 1.172% Hits 6
Prefix / IP version
/24 · IPv4
Network
172.59.219.0
Broadcast
172.59.219.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
6 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.188.0/24

Risk Max LOW Footprint 1.172% Hits 5
Prefix / IP version
/24 · IPv4
Network
172.56.188.0
Broadcast
172.56.188.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
34.0038 , -117.446
Hits / Errors
5 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.165.0/24

Risk Max LOW Footprint 1.172% Hits 5
Prefix / IP version
/24 · IPv4
Network
172.58.165.0
Broadcast
172.58.165.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
41.8835 , -87.6305
Hits / Errors
5 hits · 0 errors
First / Last seen
2026-03-07 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.210.0/24

Risk Max LOW Footprint 1.172% Hits 5
Prefix / IP version
/24 · IPv4
Network
172.59.210.0
Broadcast
172.59.210.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
5 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.220.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.220.0
Broadcast
172.59.220.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.121.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.58.121.0
Broadcast
172.58.121.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
33.7256 , -117.9119
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.32.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.56.32.0
Broadcast
172.56.32.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
38.8892 , -76.9417
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-07 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.5.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.56.5.0
Broadcast
172.56.5.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
26.6462 , -81.8455
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-07 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.134.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.58.134.0
Broadcast
172.58.134.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
25.882 , -80.2136
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-07 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.26.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.26.0
Broadcast
172.59.26.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
41.1915 , -81.253975
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-07 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.162.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.56.162.0
Broadcast
172.56.162.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
40.7035 , -73.9235
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.132.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.58.132.0
Broadcast
172.58.132.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
25.905450000000002 , -80.19815
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.0.0/24

Risk Max LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.56.0.0
Broadcast
172.56.0.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
26.5698 , -81.8695
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.12.0/24

Risk Max LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.56.12.0
Broadcast
172.56.12.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
44.96556666666667 , -93.32396666666666
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.1.0/24

Risk Max LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.58.1.0
Broadcast
172.58.1.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
33.76533333333334 , -84.33363333333332
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.209.0/24

Risk Max LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.58.209.0
Broadcast
172.58.209.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
33.9576 , -118.267
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.50.0/24

Risk Max LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.59.50.0
Broadcast
172.59.50.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
36.79409999999999 , -119.81546666666667
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.80.0/24

Risk Max LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.59.80.0
Broadcast
172.59.80.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
38.1405 , -85.6936
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-06 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.58.135.0/24

Risk Max LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.58.135.0
Broadcast
172.58.135.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
25.882 , -80.2136
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-04 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.181.0/24

Risk Max LOW Footprint 0.781% Hits 11
Prefix / IP version
/24 · IPv4
Network
172.56.181.0
Broadcast
172.56.181.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
33.9249 , -117.4592
Hits / Errors
11 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.171.0/24

Risk Max LOW Footprint 0.781% Hits 5
Prefix / IP version
/24 · IPv4
Network
172.59.171.0
Broadcast
172.59.171.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
37.342 , -121.9049
Hits / Errors
5 hits · 0 errors
First / Last seen
2026-03-06 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.106.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.106.0
Broadcast
172.59.106.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
43.1193 , -87.9505
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.208.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.208.0
Broadcast
172.59.208.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
40.6582 , -74.221
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-09 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.2.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.56.2.0
Broadcast
172.56.2.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
26.6462 , -81.8455
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.64.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.56.64.0
Broadcast
172.56.64.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
33.7485 , -84.3871
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.128.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.128.0
Broadcast
172.59.128.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
37.7652 , -122.1579
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.59.154.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.59.154.0
Broadcast
172.59.154.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
37.9593 , -121.2619
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-07 02:00 · 2026-03-08 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2

172.56.221.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
172.56.221.0
Broadcast
172.56.221.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
40.0149 , -75.1439
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-05 02:00
Top ASN
AS21928 · T-Mobile USA, Inc.
Top organization / ISP
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
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