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:
OPTAGE Inc.
·
Clear
Snapshot
2026-03-07
Results
23
Page
1
/
1
101.140.155.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
101.140.155.0
Broadcast
101.140.155.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7221 , 135.3254
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-27 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 →
180.144.9.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
180.144.9.0
Broadcast
180.144.9.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.6892 , 135.4899
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Osaka
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
119.228.132.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
119.228.132.0
Broadcast
119.228.132.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7663 , 135.6369
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
OPTAGE Inc.
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Neyagawa
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
121.87.209.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
121.87.209.0
Broadcast
121.87.209.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.5742 , 135.4777
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-25 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Sakai
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
119.230.73.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
119.230.73.0
Broadcast
119.230.73.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7565 , 135.6252
Hits / Errors
3
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
·
Osaka
·
Neyagawa
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
121.87.177.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
121.87.177.0
Broadcast
121.87.177.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.5963 , 135.4868
Hits / Errors
3
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
·
Osaka
·
Sakai
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
119.229.217.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
119.229.217.0
Broadcast
119.229.217.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.5709 , 135.4537
Hits / Errors
2
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-26 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Sakai
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
112.68.228.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
112.68.228.0
Broadcast
112.68.228.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7699 , 135.5171
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Suita
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
182.165.242.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
182.165.242.0
Broadcast
182.165.242.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.5709 , 135.4537
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Sakai
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
58.190.128.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
58.190.128.0
Broadcast
58.190.128.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7718 , 134.8256
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 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 →
121.80.99.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
121.80.99.0
Broadcast
121.80.99.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.8199 , 135.6469
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Hirakata
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
121.84.27.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
121.84.27.0
Broadcast
121.84.27.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.0231 , 135.752
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Kyoto
·
Kyoto
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
112.68.224.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
112.68.224.0
Broadcast
112.68.224.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7699 , 135.5171
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Suita
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
119.231.46.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
119.231.46.0
Broadcast
119.231.46.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.8199 , 135.6469
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Osaka
·
Hirakata
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
58.188.232.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
58.188.232.0
Broadcast
58.188.232.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.6753 , 133.751
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS17511 ·
OPTAGE Inc.
Top organization / ISP
K-Opticom Corporation
·
OPTAGE Inc.
Top geo
Japan
·
Okayama
·
Sōja
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
119.229.45.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
119.229.45.0
Broadcast
119.229.45.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.6892 , 135.4899
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
·
Osaka
·
Osaka
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
119.230.17.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
119.230.17.0
Broadcast
119.230.17.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.7403 , 135.5862
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
·
Osaka
·
Kadoma
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
121.85.103.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
121.85.103.0
Broadcast
121.85.103.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
35.0104 , 135.8707
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
·
Shiga
·
Ōtsu
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
121.86.147.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
121.86.147.0
Broadcast
121.86.147.255
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 →
219.122.157.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
219.122.157.0
Broadcast
219.122.157.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
34.8326 , 134.6722
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
·
Himeji
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 →
59.190.97.0/24
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 →
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