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.
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Active filter:
Japan
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Snapshot
2026-03-08
Results
577
Page
15
/
15
27.81.130.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
27.81.130.0
Broadcast
27.81.130.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
31.5703 , 130.5315
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2516 ·
KDDI CORPORATION
Top organization / ISP
KDDI
·
Kddi Corporation
Top geo
Japan
·
Kagoshima
·
Kagoshima
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
36.12.223.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
36.12.223.0
Broadcast
36.12.223.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.7421 , 139.6524
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2516 ·
KDDI CORPORATION
Top organization / ISP
KDDI
·
Kddi Corporation
Top geo
Japan
·
Tokyo
·
Nerima City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
42.125.61.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
42.125.61.0
Broadcast
42.125.61.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.311 , 138.9239
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS10010 ·
TOKAI Communications Corporation
Top organization / ISP
TOKAI
·
TOKAI Communications Corporation
Top geo
Japan
·
Shizuoka
·
Gotenba Shi
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
42.144.20.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
42.144.20.0
Broadcast
42.144.20.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.7162 , 139.5891
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS9824 ·
JCOM Co., Ltd.
Top organization / ISP
Jupiter Telecommunication Co. Ltd
·
JCOM Co., Ltd.
Top geo
Japan
·
Tokyo
·
Nishiogikita
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
49.239.78.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
49.239.78.0
Broadcast
49.239.78.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.6667 , 135.583
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2497 ·
Internet Initiative Japan Inc.
Top organization / ISP
Internet Initiative Japan Inc.
·
Internet Initiative Japan Inc.
Top geo
Japan
·
Osaka
·
Higashiosaka
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
49.241.39.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
49.241.39.0
Broadcast
49.241.39.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.3596 , 132.7525
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS10013 ·
FreeBit Co.,Ltd.
Top organization / ISP
FreeBit Co., Ltd.
·
FreeBit Co., Ltd
Top geo
Japan
·
Shimane
·
Izumo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
58.190.136.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
58.190.136.0
Broadcast
58.190.136.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7718 , 134.8256
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
OPTAGE Inc.
·
OPTAGE Inc.
Top geo
Japan
·
Hyōgo
·
Kakogawa
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
58.190.48.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
58.190.48.0
Broadcast
58.190.48.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7368 , 135.3424
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Hyōgo
·
Nishinomiya
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
59.132.58.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
59.132.58.0
Broadcast
59.132.58.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6837 , 139.6805
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2516 ·
KDDI CORPORATION
Top organization / ISP
KDDI
·
DION (KDDI CORPORATION)
Top geo
Japan
·
Tokyo
·
Tokyo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
59.190.97.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
59.190.97.0
Broadcast
59.190.97.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.5963 , 135.4868
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
OPTAGE Inc.
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Sakai
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
60.130.224.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
60.130.224.0
Broadcast
60.130.224.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6629 , 139.761
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
Japan Nation-wide Network of Softbank Corp.
·
SoftBank Corp.
Top geo
Japan
·
Tokyo
·
Minato-ku
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
60.134.26.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
60.134.26.0
Broadcast
60.134.26.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6629 , 139.761
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
Japan Nation-wide Network of Softbank Corp.
·
SoftBank Corp.
Top geo
Japan
·
Tokyo
·
Minato-ku
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
60.69.66.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
60.69.66.0
Broadcast
60.69.66.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
33.2453 , 131.692
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
Japan Nation-wide Network of Softbank Corp.
·
SoftBank Corp.
Top geo
Japan
·
Oita
·
Tsurusaki
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
60.73.202.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
60.73.202.0
Broadcast
60.73.202.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6629 , 139.761
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
Japan Nation-wide Network of Softbank Corp.
·
SoftBank Corp.
Top geo
Japan
·
Tokyo
·
Minato-ku
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
60.89.147.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
60.89.147.0
Broadcast
60.89.147.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.0027 , 136.864
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
Japan Nation-wide Network of Softbank Corp.
·
SoftBank Corp.
Top geo
Japan
·
Aichi
·
Chita
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
60.89.152.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
60.89.152.0
Broadcast
60.89.152.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.1815 , 136.906
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
Japan Nation-wide Network of Softbank Corp.
·
SoftBank Corp.
Top geo
Japan
·
Aichi
·
Nagoya
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
61.120.244.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
61.120.244.0
Broadcast
61.120.244.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.1125 , 138.8628
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS10010 ·
TOKAI Communications Corporation
Top organization / ISP
TOKAI
·
TOKAI Communications Corporation
Top geo
Japan
·
Shizuoka
·
Numazu
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
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