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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: NEC BIGLOBE Ltd. · Clear
Snapshot 2026-01-20 Results 7 Page 1 / 1

122.135.111.0/24

Risk Max 2 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
122.135.111.0
Broadcast
122.135.111.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.9959 , 140.3441
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-12-28 23:00 · 2024-12-28 23:00
Top ASN
AS2518 · BIGLOBE Inc.
Top organization / ISP
BIGLOBE · NEC BIGLOBE Ltd.
Top geo
Japan · Ibaraki · Inashiki
Window / Updated
2024-12-23 → 2024-12-30 · Updated 2026-01-14 · v2
Open report →

133.201.154.0/24

Risk Max — LOW Footprint 0.391% Hits 44
Prefix / IP version
/24 · IPv4
Network
133.201.154.0
Broadcast
133.201.154.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.7924 , 139.9039
Hits / Errors
44 hits · 0 errors
First / Last seen
2024-11-07 22:56 · 2024-11-07 22:58
Top ASN
AS2518 · BIGLOBE Inc.
Top organization / ISP
NEC BIGLOBE Ltd. · BIGLOBE Inc.
Top geo
Japan · Chiba · Matsudo
Window / Updated
2024-11-04 → 2024-11-11 · Updated 2026-01-14 · v2
Open report →

133.201.23.0/24

Risk Max — LOW Footprint 0.391% Hits 30
Prefix / IP version
/24 · IPv4
Network
133.201.23.0
Broadcast
133.201.23.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.4337 , 139.6499
Hits / Errors
30 hits · 0 errors
First / Last seen
2025-05-19 04:50 · 2025-05-19 04:52
Top ASN
AS2518 · BIGLOBE Inc.
Top organization / ISP
NEC BIGLOBE Ltd. · BIGLOBE Inc.
Top geo
Japan · Kanagawa · Yokohama
Window / Updated
2025-05-19 → 2025-05-26 · Updated 2026-01-14 · v2
Open report →

122.132.54.0/24

Risk Max — LOW Footprint 0.391% Hits 11
Prefix / IP version
/24 · IPv4
Network
122.132.54.0
Broadcast
122.132.54.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
39.0153 , 141.7041
Hits / Errors
11 hits · 1 errors
First / Last seen
2024-05-18 04:32 · 2024-05-18 04:36
Top ASN
AS2518 · BIGLOBE Inc.
Top organization / ISP
BIGLOBE · NEC BIGLOBE Ltd.
Top geo
Japan · Iwate · Ōfunato
Window / Updated
2024-05-13 → 2024-05-20 · Updated 2026-01-14 · v2
Open report →

125.199.21.0/24

Risk Max — LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
125.199.21.0
Broadcast
125.199.21.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
34.6926 , 135.504
Hits / Errors
3 hits · 2 errors
First / Last seen
2024-04-23 12:07 · 2024-04-23 12:13
Top ASN
AS2518 · BIGLOBE Inc.
Top organization / ISP
BIGLOBE · NEC BIGLOBE Ltd.
Top geo
Japan · Osaka · Kitajima
Window / Updated
2024-04-22 → 2024-04-29 · Updated 2026-01-14 · v2
Open report →

133.201.2.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
133.201.2.0
Broadcast
133.201.2.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.4337 , 139.6499
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-09-23 20:32 · 2025-09-23 20:32
Top ASN
AS2518 · BIGLOBE Inc.
Top organization / ISP
NEC BIGLOBE Ltd. · BIGLOBE Inc.
Top geo
Japan · Kanagawa · Yokohama
Window / Updated
2025-09-22 → 2025-09-29 · Updated 2026-01-14 · v2
Open report →

122.134.4.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
122.134.4.0
Broadcast
122.134.4.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.6481 , 139.9115
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-04-04 04:55 · 2025-04-04 04:55
Top ASN
AS2518 · BIGLOBE Inc.
Top organization / ISP
BIGLOBE · NEC BIGLOBE Ltd.
Top geo
Japan · Chiba · Urayasu
Window / Updated
2025-03-31 → 2025-04-07 · Updated 2026-01-14 · v2
Open report →