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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 Ningxia Province Network · Clear
Snapshot 2026-03-20 Results — Page 1 / 1

221.11.243.0/24

Risk Max — LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
221.11.243.0
Broadcast
221.11.243.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.5003 , 105.197
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-03-10 02:00 · 2026-03-11 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Ningxia Province Network
Top geo
China · Ningxia · Zhongwei
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2
Open report →

221.11.242.0/24

Risk Max — LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
221.11.242.0
Broadcast
221.11.242.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.5003 , 105.197
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-12 02:00 · 2026-03-13 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Ningxia Province Network
Top geo
China · Ningxia · Zhongwei
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2
Open report →

221.11.252.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
221.11.252.0
Broadcast
221.11.252.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.5003 , 105.197
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-03-10 02:00 · 2026-03-11 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Ningxia Province Network
Top geo
China · Ningxia · Zhongwei
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2
Open report →

221.199.73.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
221.199.73.0
Broadcast
221.199.73.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.5003 , 105.197
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-10 02:00 · 2026-03-11 02:00
Top ASN
AS4837 · CHINA UNICOM China169 Backbone
Top organization / ISP
— · CNC Group CHINA169 Ningxia Province Network
Top geo
China · Ningxia · Zhongwei
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2
Open report →