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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: Niigata · Clear
Snapshot 2026-01-22 Results 6 Page 1 / 1

170.249.65.0/24

Risk Max — LOW Footprint 0.391% Hits 12
Prefix / IP version
/24 · IPv4
Network
170.249.65.0
Broadcast
170.249.65.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.1222 , 138.2451
Hits / Errors
12 hits · 1 errors
First / Last seen
2024-04-27 04:45 · 2024-04-27 04:47
Top ASN
AS131937 · Joetsu Cable Vision
Top organization / ISP
Joetsu Cable Vision Co., Ltd. · Joetsu Cable Vision
Top geo
Japan · Niigata · Jōetsu
Window / Updated
2024-04-22 → 2024-04-29 · Updated 2026-01-14 · v2
Open report →

202.223.160.0/24

Risk Max — LOW Footprint 0.391% Hits 11
Prefix / IP version
/24 · IPv4
Network
202.223.160.0
Broadcast
202.223.160.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.0735 , 138.9028
Hits / Errors
11 hits · 0 errors
First / Last seen
2024-12-09 14:50 · 2024-12-09 16:38
Top ASN
AS2907 · Research Organization of Information and Systems, National Institute of Informatics
Top organization / ISP
SINET · Research Organization of Information and Systems, National Institute of Informatics
Top geo
Japan · Niigata · Minamiuonuma
Window / Updated
2024-12-09 → 2024-12-16 · Updated 2026-01-14 · v2
Open report →

211.12.208.0/24

Risk Max — LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
211.12.208.0
Broadcast
211.12.208.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.9607 , 139.3239
Hits / Errors
4 hits · 0 errors
First / Last seen
2025-10-02 04:48 · 2025-10-02 04:48
Top ASN
AS9601 · Niigata Communication Service
Top organization / ISP
PX0256 Internet · PX0256 Internet
Top geo
Japan · Niigata · Shibata
Window / Updated
2025-09-29 → 2025-10-06 · Updated 2026-01-14 · v2
Open report →

114.149.13.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
114.149.13.0
Broadcast
114.149.13.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.0735 , 138.9028
Hits / Errors
2 hits · 0 errors
First / Last seen
2024-01-07 23:36 · 2024-01-07 23:36
Top ASN
AS4713 · NTT DOCOMO BUSINESS,Inc.
Top organization / ISP
Open Computer Network · NTT Communications Corporation
Top geo
Japan · Niigata · Minamiuonuma
Window / Updated
2024-01-01 → 2024-01-08 · Updated 2026-01-14 · v2
Open report →

117.102.171.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
117.102.171.0
Broadcast
117.102.171.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.3653 , 138.5623
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-06-29 18:10 · 2025-06-29 18:10
Top ASN
AS18070 · Global Network Core Co.,Ltd.
Top organization / ISP
Global Network Core Co., Ltd. · Global Network Core Co., Ltd.
Top geo
Japan · Niigata · Kashiwazaki
Window / Updated
2025-06-23 → 2025-06-30 · Updated 2026-01-14 · v2
Open report →

180.92.23.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
180.92.23.0
Broadcast
180.92.23.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.9035 , 139.0059
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-03-22 19:22 · 2025-03-22 19:22
Top ASN
AS59127 · Newmedia Corporation
Top organization / ISP
New media Co., Ltd. · Newmedia Corporation
Top geo
Japan · Niigata · Niigata
Window / Updated
2025-03-17 → 2025-03-24 · Updated 2026-01-14 · v2
Open report →