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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: Microsoft Azure Cloud (italynorth) · Clear
Snapshot 2026-02-01 Results 6 Page 1 / 1

172.213.12.0/24

Risk Max 1 LOW Footprint 5.859% Hits 68
Prefix / IP version
/24 · IPv4
Network
172.213.12.0
Broadcast
172.213.12.255
Observed IPs / Subnet size
15 observed · 256 total
Centroid
45.468945 , 9.18103
Hits / Errors
68 hits · 0 errors
First / Last seen
2025-04-07 15:51 · 2025-04-10 17:21
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (italynorth) · Microsoft Corporation
Top geo
Italy · Lombardy · Milan
Window / Updated
2025-04-07 → 2025-04-14 · Updated 2026-01-14 · v2
Open report →

172.213.21.0/24

Risk Max — LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
172.213.21.0
Broadcast
172.213.21.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
45.468945 , 9.18103
Hits / Errors
3 hits · 1 errors
First / Last seen
2025-12-17 11:56 · 2025-12-17 19:09
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (italynorth) · Microsoft Corporation
Top geo
Italy · Lombardy · Milan
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →

4.232.137.0/24

Risk Max — LOW Footprint 0.391% Hits 31
Prefix / IP version
/24 · IPv4
Network
4.232.137.0
Broadcast
4.232.137.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.468945 , 9.18103
Hits / Errors
31 hits · 28 errors
First / Last seen
2024-04-25 14:50 · 2024-04-28 01:20
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (italynorth) · Microsoft Corporation
Top geo
Italy · Lombardy · Milan
Window / Updated
2024-04-22 → 2024-04-29 · Updated 2026-01-14 · v2
Open report →

72.146.40.0/24

Risk Max — LOW Footprint 0.391% Hits 9
Prefix / IP version
/24 · IPv4
Network
72.146.40.0
Broadcast
72.146.40.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.468945 , 9.18103
Hits / Errors
9 hits · 3 errors
First / Last seen
2025-12-17 19:52 · 2025-12-17 19:52
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (italynorth) · BellSouth.net Inc.
Top geo
Italy · Lombardy · Milan
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →

72.146.41.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
72.146.41.0
Broadcast
72.146.41.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.468945 , 9.18103
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-03-13 08:49 · 2025-03-13 08:49
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (italynorth) · BellSouth.net Inc.
Top geo
Italy · Lombardy · Milan
Window / Updated
2025-03-10 → 2025-03-17 · Updated 2026-01-14 · v2
Open report →

172.213.11.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.213.11.0
Broadcast
172.213.11.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.468945 , 9.18103
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-12-17 00:46 · 2025-12-17 00:46
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (italynorth) · Microsoft Corporation
Top geo
Italy · Lombardy · Milan
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →