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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: Fonseca · Clear
Snapshot 2026-01-21 Results 19 Page 1 / 1

45.179.41.0/24

Risk Max — LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
45.179.41.0
Broadcast
45.179.41.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-29.625199999999996 , -50.9797
Hits / Errors
3 hits · 1 errors
First / Last seen
2025-09-08 05:54 · 2025-09-09 17:18
Top ASN
AS269082 · Fonseca Telecomunicacoes ME
Top organization / ISP
Fonseca Telecomunicacoes ME · Fonseca Telecomunicacoes ME
Top geo
Brazil · Rio Grande do Sul · Sapiranga
Window / Updated
2025-09-08 → 2025-09-15 · Updated 2026-01-14 · v2
Open report →

45.179.43.0/24

Risk Max — LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
45.179.43.0
Broadcast
45.179.43.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-29.6252 , -50.9797
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-10-07 17:01 · 2025-10-10 17:22
Top ASN
AS269082 · Fonseca Telecomunicacoes ME
Top organization / ISP
Fonseca Telecomunicacoes ME · Fonseca Telecomunicacoes ME
Top geo
Brazil · Rio Grande do Sul · Sapiranga
Window / Updated
2025-10-06 → 2025-10-13 · Updated 2026-01-14 · v2
Open report →

177.91.134.0/24

Risk Max — LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
177.91.134.0
Broadcast
177.91.134.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-5.8111 , -35.2235
Hits / Errors
3 hits · 2 errors
First / Last seen
2025-10-02 14:41 · 2025-10-02 14:41
Top ASN
AS263443 · L R DA FONSECA ME
Top organization / ISP
L R DA FONSECA ME · L R DA FONSECA ME
Top geo
Brazil · Rio Grande do Norte · Natal
Window / Updated
2025-09-29 → 2025-10-06 · Updated 2026-01-14 · v2
Open report →

190.9.81.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
190.9.81.0
Broadcast
190.9.81.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-13.0475 , -39.6038
Hits / Errors
2 hits · 1 errors
First / Last seen
2025-12-14 05:47 · 2025-12-14 05:48
Top ASN
AS271591 · TOP NET SERVICOS DE PROVEDOR LTDA - ME
Top organization / ISP
Fonseca Reis Provedor de Internet LTDA · TOP NET SERVICOS DE PROVEDOR LTDA - ME
Top geo
Brazil · Bahia · Amargosa
Window / Updated
2025-12-08 → 2025-12-15 · Updated 2026-01-14 · v2
Open report →

177.221.47.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
177.221.47.0
Broadcast
177.221.47.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-8.0009 , -34.8687
Hits / Errors
2 hits · 2 errors
First / Last seen
2025-10-05 22:54 · 2025-10-05 22:54
Top ASN
AS52965 · 1TELECOM SERVICOS DE TECNOLOGIA EM INTERNET LTDA
Top organization / ISP
Claudio Expedito Fonseca Bastos Neto · 1telecom Servicos De Tecnologia EM Internet Ltda
Top geo
Brazil · Pernambuco · Recife
Window / Updated
2025-09-29 → 2025-10-06 · Updated 2026-01-14 · v2
Open report →

186.209.223.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
186.209.223.0
Broadcast
186.209.223.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-12.8194 , -46.5353
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-09-21 22:12 · 2025-09-21 22:12
Top ASN
AS61621 · Norte.Net Telecomunicações Ltda
Top organization / ISP
C FONSECA NEGRE · Norte.Net Telecomunicações Ltda
Top geo
Brazil · Tocantins · Combinado
Window / Updated
2025-09-15 → 2025-09-22 · Updated 2026-01-14 · v2
Open report →

181.78.19.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
181.78.19.0
Broadcast
181.78.19.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
10.8861 , -72.8487
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-12-17 01:14 · 2025-12-17 01:14
Top ASN
AS52468 · UFINET PANAMA S.A.
Top organization / ISP
UFINET COLOMBIA, S. A · IFX Networks Argentina S.R.L
Top geo
Colombia · La Guajira Department · Fonseca
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →

177.91.133.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.91.133.0
Broadcast
177.91.133.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-5.8111 , -35.2235
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-12-14 05:55 · 2025-12-14 05:55
Top ASN
AS263443 · L R DA FONSECA ME
Top organization / ISP
L R DA FONSECA ME · L R DA FONSECA ME
Top geo
Brazil · Rio Grande do Norte · Natal
Window / Updated
2025-12-08 → 2025-12-15 · Updated 2026-01-14 · v2
Open report →

177.91.135.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.91.135.0
Broadcast
177.91.135.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-5.8111 , -35.2235
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-30 21:26 · 2025-11-30 21:26
Top ASN
AS263443 · L R DA FONSECA ME
Top organization / ISP
L R DA FONSECA ME · L R DA FONSECA ME
Top geo
Brazil · Rio Grande do Norte · Natal
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2
Open report →

45.179.42.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
45.179.42.0
Broadcast
45.179.42.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-29.6252 , -50.9797
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-29 04:55 · 2025-11-29 04:55
Top ASN
AS269082 · Fonseca Telecomunicacoes ME
Top organization / ISP
Fonseca Telecomunicacoes ME · Fonseca Telecomunicacoes ME
Top geo
Brazil · Rio Grande do Sul · Sapiranga
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2
Open report →

170.0.11.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
170.0.11.0
Broadcast
170.0.11.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
10.8861 , -72.8487
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-26 02:50 · 2025-11-26 02:50
Top ASN
AS270088 · GUAJIRANET ISP S.A.S.
Top organization / ISP
Guajiranet ISP · Guajiranet ISP S.A.S.
Top geo
Colombia · La Guajira Department · Fonseca
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2
Open report →

45.163.246.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
45.163.246.0
Broadcast
45.163.246.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.8732 , -42.3396
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-26 02:24 · 2025-11-26 02:24
Top ASN
AS268588 · J.LP FONSECA TELECOM
Top organization / ISP
J.LP FONSECA TELECOM · J.LP FONSECA TELECOM
Top geo
Brazil · Rio de Janeiro · Araruama
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2
Open report →

181.78.8.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
181.78.8.0
Broadcast
181.78.8.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
10.8861 , -72.8487
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-25 18:52 · 2025-11-25 18:52
Top ASN
AS52468 · UFINET PANAMA S.A.
Top organization / ISP
UFINET COLOMBIA, S. A · IFX Networks Argentina S.R.L
Top geo
Colombia · La Guajira Department · Fonseca
Window / Updated
2025-11-24 → 2025-12-01 · Updated 2026-01-14 · v2
Open report →

177.12.81.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.12.81.0
Broadcast
177.12.81.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-16.6112 , -44.4367
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-06 05:52 · 2025-11-06 05:52
Top ASN
AS263031 · SCJ Info Com. Serv. de Informatica Ltda
Top organization / ISP
Evandro Oliveira Fonseca ME · SCJ Info Com. Serv. de Informatica Ltda
Top geo
Brazil · Minas Gerais · Coração de Jesus
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

177.91.132.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.91.132.0
Broadcast
177.91.132.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-5.8111 , -35.2235
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-06 02:54 · 2025-11-06 02:54
Top ASN
AS263443 · L R DA FONSECA ME
Top organization / ISP
L R DA FONSECA ME · L R DA FONSECA ME
Top geo
Brazil · Rio Grande do Norte · Natal
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

45.179.40.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
45.179.40.0
Broadcast
45.179.40.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-29.6252 , -50.9797
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-10-28 08:20 · 2025-10-28 08:20
Top ASN
AS269082 · Fonseca Telecomunicacoes ME
Top organization / ISP
Fonseca Telecomunicacoes ME · Fonseca Telecomunicacoes ME
Top geo
Brazil · Rio Grande do Sul · Sapiranga
Window / Updated
2025-10-27 → 2025-11-03 · Updated 2026-01-14 · v2
Open report →

45.181.103.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
45.181.103.0
Broadcast
45.181.103.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-15.7783 , -47.9319
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-10-02 07:04 · 2025-10-02 07:04
Top ASN
AS269182 · PLUGAR TELECOM
Top organization / ISP
Cláudio Fonseca Neves · Plugar Telecom
Top geo
Brazil · Federal District · Samambaia
Window / Updated
2025-09-29 → 2025-10-06 · Updated 2026-01-14 · v2
Open report →

177.36.10.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
177.36.10.0
Broadcast
177.36.10.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-8.0009 , -34.8687
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-09-08 21:56 · 2025-09-08 21:56
Top ASN
AS52965 · 1TELECOM SERVICOS DE TECNOLOGIA EM INTERNET LTDA
Top organization / ISP
Claudio Expedito Fonseca Bastos Neto · 1telecom Servicos De Tecnologia EM Internet Ltda
Top geo
Brazil · Pernambuco · Recife
Window / Updated
2025-09-08 → 2025-09-15 · Updated 2026-01-14 · v2
Open report →

179.124.141.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
179.124.141.0
Broadcast
179.124.141.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-8.0009 , -34.8687
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-09-08 00:56 · 2025-09-08 00:56
Top ASN
AS52965 · 1TELECOM SERVICOS DE TECNOLOGIA EM INTERNET LTDA
Top organization / ISP
Claudio Expedito Fonseca Bastos Neto · 1telecom Servicos De Tecnologia EM Internet Ltda
Top geo
Brazil · Pernambuco · Recife
Window / Updated
2025-09-01 → 2025-09-08 · Updated 2026-01-14 · v2
Open report →