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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: S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA · Clear
Snapshot 2026-01-25 Results 11 Page 1 / 1

170.238.174.0/24

Risk Max — LOW Footprint 1.562% Hits 4
Prefix / IP version
/24 · IPv4
Network
170.238.174.0
Broadcast
170.238.174.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
4 hits · 1 errors
First / Last seen
2025-12-17 06:43 · 2025-12-17 21:15
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
Arcc RIO Telecom Provedor De Internet Eireli · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →

138.118.88.0/24

Risk Max — LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
138.118.88.0
Broadcast
138.118.88.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-22.8051 , -43.3686
Hits / Errors
4 hits · 0 errors
First / Last seen
2025-09-15 06:23 · 2025-09-17 12:31
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
NAVEGUE.COM SERVICOS DE TELECOMUNICACOES LTDA · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · São João de Meriti
Window / Updated
2025-09-15 → 2025-09-22 · Updated 2026-01-14 · v2
Open report →

191.7.17.0/24

Risk Max — LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
191.7.17.0
Broadcast
191.7.17.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
3 hits · 0 errors
First / Last seen
2025-11-06 04:11 · 2025-11-06 11:42
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
MDJ CONEXOES DE INTERNET E SERVICOS DE INFORMATICA · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

170.238.172.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
170.238.172.0
Broadcast
170.238.172.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-10-14 10:21 · 2025-10-14 10:21
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-10-13 → 2025-10-20 · Updated 2026-01-14 · v2
Open report →

191.7.19.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
191.7.19.0
Broadcast
191.7.19.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-09-21 09:23 · 2025-09-21 09:23
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
Inobile Telecom · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-09-15 → 2025-09-22 · Updated 2026-01-14 · v2
Open report →

177.66.0.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
177.66.0.0
Broadcast
177.66.0.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-09-14 00:52 · 2025-09-14 00:52
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
Ultrimagem Centro De Imagens N I Ltda · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-09-08 → 2025-09-15 · Updated 2026-01-14 · v2
Open report →

177.66.1.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.66.1.0
Broadcast
177.66.1.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-26 02:46 · 2025-11-26 02:46
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
Palhada Wifi Servicos Telecomunicacoes E I Ltda · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2
Open report →

177.66.3.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.66.3.0
Broadcast
177.66.3.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-11-06 11:36 · 2025-11-06 11:36
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
Palhada Wifi Servicos Telecomunicacoes E I Ltda · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

191.7.16.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
191.7.16.0
Broadcast
191.7.16.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-10-04 17:02 · 2025-10-04 17:02
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-09-29 → 2025-10-06 · Updated 2026-01-14 · v2
Open report →

191.7.18.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
191.7.18.0
Broadcast
191.7.18.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-09-06 00:47 · 2025-09-06 00:47
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
Inobile Telecom · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-09-01 → 2025-09-08 · Updated 2026-01-14 · v2
Open report →

177.66.2.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.66.2.0
Broadcast
177.66.2.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.7539 , -43.4519
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-08-17 08:22 · 2025-08-17 08:22
Top ASN
AS262485 · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top organization / ISP
Palhada Wifi Servicos Telecomunicacoes E I Ltda · S.C. RIO TELECOMUNICACOES E INFORMATICA LTDA
Top geo
Brazil · Rio de Janeiro · Nova Iguaçu
Window / Updated
2025-08-11 → 2025-08-18 · Updated 2026-01-14 · v2
Open report →