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Autonomous System

AS61856

Viamar Telecom

Announced IPs
4,096
CIDR prefixes
4
ASN
AS61856

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 5-10Gbps
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Selective

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
131.0.40.0/22 1.0K
84.8%
Viamar Telecom BR
138.117.208.0/22 1.0K
86.9%
Viamar Telecom BR Rio de Janeiro Cabo Frio
143.208.120.0/22 1.0K
0.0%
Viamar Telecom BR Rio de Janeiro Cabo Frio
170.245.252.0/22 1.0K
0.0%
Viamar Telecom BR

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS61856 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
143.208.120.0/24 69,920 2026-07-31 02:29:21
143.208.121.0/24 69,895 2026-07-31 02:29:21
138.117.210.0/24 69,850 2026-07-31 02:28:13
170.245.252.0/24 69,696 2026-07-31 02:36:22
138.117.211.0/24 69,582 2026-07-31 02:28:13
170.245.253.0/24 69,484 2026-07-31 02:36:22
131.0.41.0/24 54,537 2026-07-31 02:28:12
170.245.252.0/22 54,201 2026-07-31 02:36:22
131.0.40.0/22 54,106 2026-07-31 02:28:12
143.208.120.0/22 53,965 2026-07-31 02:29:21
138.117.208.0/22 53,936 2026-07-31 02:28:13
170.245.255.0/24 43,644 2026-07-31 02:36:22
170.245.254.0/24 43,606 2026-07-31 02:36:22
131.0.40.0/24 43,580 2026-07-31 02:29:11
143.208.123.0/24 43,571 2026-07-31 02:29:21
138.117.209.0/24 43,542 2026-07-31 02:29:11
138.117.208.0/24 43,498 2026-07-31 02:29:11
143.208.122.0/24 42,989 2026-07-31 02:29:21
131.0.42.0/24 42,973 2026-07-31 02:29:11
131.0.43.0/24 42,944 2026-07-31 02:29:11
138.117.208.0/23 1,499 2026-07-31 02:28:02
170.245.252.0/23 1,498 2026-07-31 02:28:02
170.245.254.0/23 1,495 2026-07-31 02:28:02
143.208.120.0/23 1,494 2026-07-31 02:28:02
138.117.210.0/23 1,494 2026-07-31 02:28:02
131.0.40.0/23 1,492 2026-07-31 02:28:02
131.0.42.0/23 1,489 2026-07-31 02:28:02

Frequently Asked Questions

What is AS61856?

AS61856 is an Autonomous System Number assigned to Viamar Telecom. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS61856 announce?

AS61856 announces 4.1K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in Brazil.

Who operates AS61856?

AS61856 is operated by Viamar Telecom. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.

What country is AS61856 registered in?

AS61856 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-31 02:40:31 UTC
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