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:
Castelo Branco
·
Clear
Snapshot
2026-03-11
Results
17
Page
1
/
1
188.81.3.0/24
Risk Max
—
LOW
Footprint
0.781
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
188.81.3.0
Broadcast
188.81.3.255
Observed IPs / Subnet size
2
observed ·
256
total
Centroid
40.2833 , -7.508
Hits / Errors
2
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-28 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A
Top geo
Portugal
·
Castelo Branco
·
Covilha
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
144.64.50.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
4
Prefix / IP version
/24 · IPv4
Network
144.64.50.0
Broadcast
144.64.50.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.1425 , -7.4982
Hits / Errors
4
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes
·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top geo
Portugal
·
Castelo Branco
·
Fundão
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
94.133.135.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
94.133.135.0
Broadcast
94.133.135.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.7522 , -7.9239
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-26 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
NOS Comunicacoes S.A.
·
NOS COMUNICACOES S.A
Top geo
Portugal
·
Castelo Branco
·
Proença-a-Nova
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.83.161.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
2.83.161.0
Broadcast
2.83.161.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.8254 , -7.4845
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Castelo Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
37.189.140.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
37.189.140.0
Broadcast
37.189.140.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.2833 , -7.508
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A.
Top geo
Portugal
·
Castelo Branco
·
Covilha
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
144.64.51.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
144.64.51.0
Broadcast
144.64.51.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.1425 , -7.4982
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes
·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top geo
Portugal
·
Castelo Branco
·
Fundão
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
188.81.5.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
188.81.5.0
Broadcast
188.81.5.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.2833 , -7.508
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A
Top geo
Portugal
·
Castelo Branco
·
Covilha
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
188.251.7.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
188.251.7.0
Broadcast
188.251.7.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.2833 , -7.508
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Covilha
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
188.82.99.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
188.82.99.0
Broadcast
188.82.99.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.8254 , -7.4845
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A
Top geo
Portugal
·
Castelo Branco
·
Castelo Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.81.98.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
2.81.98.0
Broadcast
2.81.98.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.2135 , -7.4453
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Pêro Viseu
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
188.140.16.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
188.140.16.0
Broadcast
188.140.16.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.676 , -8.14577
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS42863 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
TMN
·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top geo
Portugal
·
Castelo Branco
·
Vila de Rei
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
188.81.12.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
188.81.12.0
Broadcast
188.81.12.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.2833 , -7.508
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A
Top geo
Portugal
·
Castelo Branco
·
Covilha
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.82.34.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
2.82.34.0
Broadcast
2.82.34.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.8254 , -7.4845
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Castelo Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
188.250.192.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
188.250.192.0
Broadcast
188.250.192.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.8254 , -7.4845
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Castelo Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.81.116.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
2.81.116.0
Broadcast
2.81.116.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.8254 , -7.4845
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Castelo Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.81.188.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
2.81.188.0
Broadcast
2.81.188.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
40.1683 , -7.1759
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Penamacor
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.83.98.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
2.83.98.0
Broadcast
2.83.98.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
39.8254 , -7.4845
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS3243 ·
MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
Top organization / ISP
PT Comunicacoes S.A.
·
PT Comunicacoes S.A
Top geo
Portugal
·
Castelo Branco
·
Castelo Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
×
This is a custom alert message.
×
Confirm Action
Are you sure you want to proceed?
