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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: CNC Group CHINA169 Shanxi Province Network · Clear
Snapshot 2026-03-08 Results 6 Page 1 / 1

221.204.216.0/24

Risk Max — LOW Footprint 7.812% Hits 132
Prefix / IP version
/24 · IPv4
Network
221.204.216.0
Broadcast
221.204.216.255
Observed IPs / Subnet size
20 observed · 256 total
Centroid
37.8706 , 112.55100000000003
Hits / Errors
132 hits · 1 errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Shanxi Province Network
Top geo
China · Shanxi · Taiyuan
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

221.204.217.0/24

Risk Max — LOW Footprint 3.125% Hits 52
Prefix / IP version
/24 · IPv4
Network
221.204.217.0
Broadcast
221.204.217.255
Observed IPs / Subnet size
8 observed · 256 total
Centroid
37.87060000000001 , 112.551
Hits / Errors
52 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Shanxi Province Network
Top geo
China · Shanxi · Taiyuan
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

221.204.14.0/24

Risk Max — LOW Footprint 1.953% Hits 34
Prefix / IP version
/24 · IPv4
Network
221.204.14.0
Broadcast
221.204.14.255
Observed IPs / Subnet size
5 observed · 256 total
Centroid
37.87060000000001 , 112.55100000000002
Hits / Errors
34 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-03-01 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Shanxi Province Network
Top geo
China · Shanxi · Taiyuan
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

221.204.210.0/24

Risk Max — LOW Footprint 1.562% Hits 34
Prefix / IP version
/24 · IPv4
Network
221.204.210.0
Broadcast
221.204.210.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
37.8706 , 112.551
Hits / Errors
34 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-26 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Shanxi Province Network
Top geo
China · Shanxi · Taiyuan
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

221.204.15.0/24

Risk Max — LOW Footprint 1.172% Hits 19
Prefix / IP version
/24 · IPv4
Network
221.204.15.0
Broadcast
221.204.15.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
37.8706 , 112.551
Hits / Errors
19 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-03-01 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Shanxi Province Network
Top geo
China · Shanxi · Taiyuan
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

221.11.122.0/24

Risk Max — LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
221.11.122.0
Broadcast
221.11.122.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
34.2635 , 108.9246
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-03-02 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Shanxi Province Network
Top geo
China · Shaanxi · Xi'an
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →