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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.
Active filter: Fronteiras · Clear
Snapshot 2026-03-04 Results 13 Page 1 / 1

170.83.175.0/24

Risk Max — LOW Footprint 3.516% Hits 9
Prefix / IP version
/24 · IPv4
Network
170.83.175.0
Broadcast
170.83.175.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
-9.975700000000002 , -67.8134
Hits / Errors
9 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-03-01 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
SEM FRONTEIRAS TELECOMUNICACOES LTDA · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

170.84.54.0/24

Risk Max — LOW Footprint 1.562% Hits 7
Prefix / IP version
/24 · IPv4
Network
170.84.54.0
Broadcast
170.84.54.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
-22.2243 , -41.613099999999996
Hits / Errors
7 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS263009 · FORTE TELECOM LTDA.
Top organization / ISP
FRONTEIRAS · Forte Telecom Ltda
Top geo
Brazil · Rio de Janeiro · Carapebus
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

170.83.174.0/24

Risk Max — LOW Footprint 1.172% Hits 6
Prefix / IP version
/24 · IPv4
Network
170.83.174.0
Broadcast
170.83.174.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
6 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-03-02 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
SEM FRONTEIRAS TELECOMUNICACOES LTDA · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

38.56.74.0/24

Risk Max — LOW Footprint 1.172% Hits 5
Prefix / IP version
/24 · IPv4
Network
38.56.74.0
Broadcast
38.56.74.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
5 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
— · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

38.191.51.0/24

Risk Max — LOW Footprint 1.172% Hits 3
Prefix / IP version
/24 · IPv4
Network
38.191.51.0
Broadcast
38.191.51.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-02-24 02:00 · 2026-02-28 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
Cogent Communications · Sem Fronteiras Telecomunicações LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

38.191.56.0/24

Risk Max — LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
38.191.56.0
Broadcast
38.191.56.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-28 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
Cogent Communications · Sem Fronteiras Telecomunicações LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

170.83.172.0/24

Risk Max — LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
170.83.172.0
Broadcast
170.83.172.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
2 hits · 1 errors
First / Last seen
2026-02-23 02:00 · 2026-02-26 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
SEM FRONTEIRAS TELECOMUNICACOES LTDA · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

201.49.140.0/24

Risk Max — LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
201.49.140.0
Broadcast
201.49.140.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-7.0125 , -40.5621
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-03-01 02:00 · 2026-03-02 02:00
Top ASN
AS270571 · E G DE MORAIS SERVIÇOS DE INTERNET LTDA
Top organization / ISP
E G DE MORAIS SERVIÇOS DE INTERNET LTDA · E G DE MORAIS SERVIÇOS DE INTERNET LTDA
Top geo
Brazil · Piauí · Fronteiras
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

201.49.141.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
201.49.141.0
Broadcast
201.49.141.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-7.0125 , -40.5621
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS270571 · E G DE MORAIS SERVIÇOS DE INTERNET LTDA
Top organization / ISP
E G DE MORAIS SERVIÇOS DE INTERNET LTDA · E G DE MORAIS SERVIÇOS DE INTERNET LTDA
Top geo
Brazil · Piauí · Fronteiras
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

170.83.173.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
170.83.173.0
Broadcast
170.83.173.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
SEM FRONTEIRAS TELECOMUNICACOES LTDA · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

138.36.1.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
138.36.1.0
Broadcast
138.36.1.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-3.7145 , -38.5419
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS264562 · PBR SERVICOS DE TELECOMUNICACOES LTDA
Top organization / ISP
Fronteiras Distribuidora Ltda · PBR SERVICOS DE TELECOMUNICACOES LTDA
Top geo
Brazil · Ceará · Fortaleza
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

38.56.75.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
38.56.75.0
Broadcast
38.56.75.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
— · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

38.191.52.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
38.191.52.0
Broadcast
38.191.52.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-9.9757 , -67.8134
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS266475 · SEM FRONTEIRAS TELECOMUNICACOES LTDA
Top organization / ISP
Cogent Communications · Sem Fronteiras Telecomunicações LTDA
Top geo
Brazil · Acre · Rio Branco
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →