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:
Viana do Castelo
·
Clear
Snapshot
2026-03-07
Results
12
Page
1
/
1
213.22.134.0/24
Risk Max
—
LOW
Footprint
0.781
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
213.22.134.0
Broadcast
213.22.134.255
Observed IPs / Subnet size
2
observed ·
256
total
Centroid
41.7672 , -8.58393
Hits / Errors
2
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-27 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
NOS Comunicacoes S.A.
·
NOS COMUNICACOES S.A
Top geo
Portugal
·
Viana do Castelo
·
Ponte de Lima
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.83.228.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
2.83.228.0
Broadcast
2.83.228.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.6929 , -8.8391
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
·
Viana do Castelo
·
Viana do Castelo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
83.144.186.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
83.144.186.0
Broadcast
83.144.186.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.6606 , -8.7365
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
TVCABO-Portugal
·
NOS COMUNICACOES, S.A.
Top geo
Portugal
·
Viana do Castelo
·
Viana do Castelo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
89.155.28.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
89.155.28.0
Broadcast
89.155.28.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.6929 , -8.8391
Hits / Errors
2
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
NOS Comunicacoes S.A.
·
NOS COMUNICACOES S.A
Top geo
Portugal
·
Viana do Castelo
·
Viana do Castelo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
188.81.234.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
188.81.234.0
Broadcast
188.81.234.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.7767 , -8.8602
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
·
Viana do Castelo
·
Afife
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.83.123.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
2.83.123.0
Broadcast
2.83.123.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.8487 , -8.4178
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
·
Viana do Castelo
·
Arcos de Valdevez
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
37.189.243.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
37.189.243.0
Broadcast
37.189.243.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.9822 , -8.6263
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
·
Viana do Castelo
·
Cerdal
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
83.144.181.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
83.144.181.0
Broadcast
83.144.181.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.6606 , -8.7365
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
TVCABO-Portugal
·
NOS COMUNICACOES, S.A.
Top geo
Portugal
·
Viana do Castelo
·
Viana do Castelo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
2.83.106.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
2.83.106.0
Broadcast
2.83.106.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.6929 , -8.8391
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
·
Viana do Castelo
·
Viana do Castelo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
213.22.132.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
213.22.132.0
Broadcast
213.22.132.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.8045 , -8.41554
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
NOS Comunicacoes S.A.
·
NOS COMUNICACOES S.A
Top geo
Portugal
·
Viana do Castelo
·
Ponte da Barca
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
83.144.187.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
83.144.187.0
Broadcast
83.144.187.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.6502 , -8.6933
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
TVCABO-Portugal
·
NOS COMUNICACOES, S.A.
Top geo
Portugal
·
Viana do Castelo
·
Barroselas
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
89.153.219.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
89.153.219.0
Broadcast
89.153.219.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
41.6929 , -8.8391
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS2860 ·
NOS COMUNICACOES, S.A.
Top organization / ISP
TVCABO-Portugal
·
NOS Comunicacoes S.A.
Top geo
Portugal
·
Viana do Castelo
·
Viana do Castelo
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
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