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.
Search
Active filter:
Chiyoda City
·
Clear
Snapshot
2026-03-08
Results
18
Page
1
/
1
219.100.37.0/24
Risk Max
—
LOW
Footprint
2.734
%
Hits
23
Prefix / IP version
/24 · IPv4
Network
219.100.37.0
Broadcast
219.100.37.255
Observed IPs / Subnet size
7
observed ·
256
total
Centroid
35.90682608695652 , 139.86495652173915
Hits / Errors
23
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS36599 ·
SoftEther Telecommunication Research Institute, LLC
Top organization / ISP
SoftEther Corporation
·
SoftEther
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
111.238.241.0/24
Risk Max
—
LOW
Footprint
0.781
%
Hits
4
Prefix / IP version
/24 · IPv4
Network
111.238.241.0
Broadcast
111.238.241.255
Observed IPs / Subnet size
2
observed ·
256
total
Centroid
35.6906 , 139.77
Hits / Errors
4
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-26 02:00
Top ASN
AS2516 ·
KDDI CORPORATION
Top organization / ISP
KDDI
·
Kddi Corporation
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
192.252.178.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
8
Prefix / IP version
/24 · IPv4
Network
192.252.178.0
Broadcast
192.252.178.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.694 , 139.754
Hits / Errors
8
hits ·
8
errors
First / Last seen
2026-02-25 02:00 · 2026-02-27 02:00
Top ASN
AS152194 ·
CTG Server Limited
Top organization / ISP
Integen, Inc
·
CTG Server Limited
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
180.58.46.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
4
Prefix / IP version
/24 · IPv4
Network
180.58.46.0
Broadcast
180.58.46.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6804 , 139.766
Hits / Errors
4
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-24 02:00
Top ASN
AS4713 ·
NTT DOCOMO BUSINESS,Inc.
Top organization / ISP
NTT Communications Corporation
·
NTT Communications Corporation
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
103.119.89.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
103.119.89.0
Broadcast
103.119.89.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6916 , 139.768
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS63782 ·
Omaezaki Cable Television Co.Ltd
Top organization / ISP
Omaezaki Cable Television Co.
·
Omaezaki Cable Television Co.Ltd
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
171.3.137.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
171.3.137.0
Broadcast
171.3.137.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6916 , 139.768
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
eAccess
·
SoftBank Corp.
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
182.249.69.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
182.249.69.0
Broadcast
182.249.69.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6906 , 139.77
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS2516 ·
KDDI CORPORATION
Top organization / ISP
KDDI
·
Kddi Corporation
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
220.247.19.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
220.247.19.0
Broadcast
220.247.19.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.683 , 139.77
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2519 ·
ARTERIA Networks Corporation
Top organization / ISP
VECTANT Ltd.
·
ARTERIA Networks Corporation
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
110.172.98.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
110.172.98.0
Broadcast
110.172.98.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.694 , 139.754
Hits / Errors
2
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-03-02 02:00
Top ASN
AS45370 ·
BROADBANDIDC
Top organization / ISP
Asia Pacific Network Information Center, Pty. Ltd
·
Asia Pacific Network Information Center
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
126.249.24.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
126.249.24.0
Broadcast
126.249.24.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6906 , 139.77
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-03-01 02:00 · 2026-03-02 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
SOFTBANK Corp
·
SoftBank Corp.
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
126.143.182.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
126.143.182.0
Broadcast
126.143.182.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6916 , 139.768
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
SOFTBANK Corp
·
SoftBank Corp.
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
133.125.102.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
133.125.102.0
Broadcast
133.125.102.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6916 , 139.768
Hits / Errors
1
hits ·
1
errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS7684 ·
SAKURA Internet Inc.
Top organization / ISP
— ·
SAKURA Internet Inc.
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
124.209.85.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
124.209.85.0
Broadcast
124.209.85.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6906 , 139.77
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS2516 ·
KDDI CORPORATION
Top organization / ISP
KDDI
·
DION (KDDI CORPORATION)
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
171.3.230.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
171.3.230.0
Broadcast
171.3.230.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6916 , 139.768
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS17676 ·
SoftBank Corp.
Top organization / ISP
eAccess
·
SoftBank Corp.
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
118.6.166.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
118.6.166.0
Broadcast
118.6.166.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.694 , 139.754
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS4713 ·
NTT DOCOMO BUSINESS,Inc.
Top organization / ISP
Open Computer Network
·
NTT Communications Corporation
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
61.197.107.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
61.197.107.0
Broadcast
61.197.107.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6916 , 139.768
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS2514 ·
NTT PC Communications, Inc.
Top organization / ISP
InfoSphere
·
NTT PC Communications, Inc.
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
133.218.160.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
133.218.160.0
Broadcast
133.218.160.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.694 , 139.754
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS2497 ·
Internet Initiative Japan Inc.
Top organization / ISP
Rikei Corporation
·
Internet Initiative Japan Inc.
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
153.236.167.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
153.236.167.0
Broadcast
153.236.167.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.6906 , 139.77
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS4713 ·
NTT DOCOMO BUSINESS,Inc.
Top organization / ISP
Open Computer Network
·
NTT Communications Corporation
Top geo
Japan
·
Tokyo
·
Chiyoda City
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
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