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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 Germany · Clear
Snapshot 2026-01-20 Results 11 Page 1 / 1

51.8.102.0/24

Risk Max 10 LOW Footprint 48.047% Hits 2180
Prefix / IP version
/24 · IPv4
Network
51.8.102.0
Broadcast
51.8.102.255
Observed IPs / Subnet size
123 observed · 256 total
Centroid
36.67769599999999 , -78.37470999999996
Hits / Errors
2180 hits · 716 errors
First / Last seen
2025-05-26 05:36 · 2025-05-31 21:34
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-05-26 → 2025-06-02 · Updated 2026-01-14 · v2
Open report →

51.8.155.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
51.8.155.0
Broadcast
51.8.155.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
2 hits · 1 errors
First / Last seen
2025-12-17 02:43 · 2025-12-17 02:43
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus2) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →

51.8.222.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
51.8.222.0
Broadcast
51.8.222.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-02-21 06:38 · 2025-02-21 06:38
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-02-17 → 2025-02-24 · Updated 2026-01-14 · v2
Open report →

51.8.223.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
51.8.223.0
Broadcast
51.8.223.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
2 hits · 2 errors
First / Last seen
2025-02-18 16:13 · 2025-02-20 13:44
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-02-17 → 2025-02-24 · Updated 2026-01-14 · v2
Open report →

51.8.231.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
51.8.231.0
Broadcast
51.8.231.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-02-16 13:28 · 2025-02-16 13:28
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-02-10 → 2025-02-17 · Updated 2026-01-14 · v2
Open report →

51.8.71.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
51.8.71.0
Broadcast
51.8.71.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-08-26 19:15 · 2025-08-26 19:15
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-08-25 → 2025-09-01 · Updated 2026-01-14 · v2
Open report →

51.8.220.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
51.8.220.0
Broadcast
51.8.220.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-02-18 11:09 · 2025-02-18 11:09
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-02-17 → 2025-02-24 · Updated 2026-01-14 · v2
Open report →

51.8.217.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
51.8.217.0
Broadcast
51.8.217.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-01-25 00:17 · 2025-01-25 00:17
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-01-20 → 2025-01-27 · Updated 2026-01-14 · v2
Open report →

51.8.152.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
51.8.152.0
Broadcast
51.8.152.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-01-17 14:58 · 2025-01-17 14:58
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus2) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-01-13 → 2025-01-20 · Updated 2026-01-14 · v2
Open report →

51.8.219.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
51.8.219.0
Broadcast
51.8.219.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-01-06 01:37 · 2025-01-06 01:37
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2025-01-06 → 2025-01-13 · Updated 2026-01-14 · v2
Open report →

51.8.98.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
51.8.98.0
Broadcast
51.8.98.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.677696 , -78.37471
Hits / Errors
1 hits · 1 errors
First / Last seen
2024-05-15 17:16 · 2024-05-15 17:16
Top ASN
AS8075 · Microsoft Corporation
Top organization / ISP
Microsoft Azure Cloud (eastus) · Microsoft Germany
Top geo
United States · Virginia · Boydton
Window / Updated
2024-05-13 → 2024-05-20 · Updated 2026-01-14 · v2
Open report →