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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: Hangzhou Alibaba Advertising Co.,Ltd. · Clear
Snapshot 2026-03-09 Results 13 Page 1 / 1

8.142.158.0/24

Risk Max 4 LOW Footprint 0.391% Hits 84
Prefix / IP version
/24 · IPv4
Network
8.142.158.0
Broadcast
8.142.158.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.911 , 116.39500000000001
Hits / Errors
84 hits · 84 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Alibaba.com LLC · Hangzhou Alibaba Advertising Co., Ltd.
Top geo
China · Beijing · Beijing
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

121.199.175.0/24

Risk Max — LOW Footprint 0.391% Hits 15
Prefix / IP version
/24 · IPv4
Network
121.199.175.0
Broadcast
121.199.175.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
15 hits · 4 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Aliyun Computing Co., LTD · Hangzhou Alibaba Advertising Co
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

47.99.112.0/24

Risk Max — LOW Footprint 0.391% Hits 15
Prefix / IP version
/24 · IPv4
Network
47.99.112.0
Broadcast
47.99.112.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
15 hits · 4 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Aliyun Computing Co., LTD · Aliyun Computing Co
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

8.145.40.0/24

Risk Max — LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
8.145.40.0
Broadcast
8.145.40.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.911 , 116.395
Hits / Errors
3 hits · 3 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Alibaba.com LLC · Hangzhou Alibaba Advertising Co., Ltd.
Top geo
China · Beijing · Beijing
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

112.124.14.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
112.124.14.0
Broadcast
112.124.14.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Aliyun Computing Co., LTD · Hangzhou Alibaba Advertising Co
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

121.40.43.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
121.40.43.0
Broadcast
121.40.43.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Alibaba.com LLC · Hangzhou Alibaba Advertising Co., Ltd.
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

121.43.116.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
121.43.116.0
Broadcast
121.43.116.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Alibaba.com LLC · Hangzhou Alibaba Advertising Co., Ltd.
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

8.139.5.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
8.139.5.0
Broadcast
8.139.5.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
2 hits · 1 errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Alibaba.com LLC · Hangzhou Alibaba Advertising Co., Ltd.
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

101.132.32.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
101.132.32.0
Broadcast
101.132.32.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
31.2222 , 121.4581
Hits / Errors
1 hits · 1 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Aliyun Computing Co., LTD · Hangzhou Alibaba Advertising Co
Top geo
China · Shanghai · Shanghai
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

121.199.172.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
121.199.172.0
Broadcast
121.199.172.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Aliyun Computing Co., LTD · Hangzhou Alibaba Advertising Co
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

121.41.166.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
121.41.166.0
Broadcast
121.41.166.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Alibaba.com LLC · Hangzhou Alibaba Advertising Co., Ltd.
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

121.43.146.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
121.43.146.0
Broadcast
121.43.146.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
30.2943 , 120.1663
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Alibaba.com LLC · Hangzhou Alibaba Advertising Co., Ltd.
Top geo
China · Zhejiang · Hangzhou
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

47.100.97.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
47.100.97.0
Broadcast
47.100.97.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
31.2222 , 121.4581
Hits / Errors
1 hits · 1 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.
Top organization / ISP
Aliyun Computing Co., LTD · Addresses CNNIC
Top geo
China · Shanghai · Shanghai
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →