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Autonomous System

AS267121

ATPlus Telecom

Announced IPs
4,352
CIDR prefixes
11
ASN
AS267121

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.

58/100
Caution
How this score is built

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

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS267121 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
151.247.210.0/24 AS205441, AS267121 2026-07-24 15:38:49

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 50-100Gbps
Geographic scope South America
Traffic ratio Balanced
Peering policy Open
IRR record AS-ATPLUS-ALL

Present at 3 internet exchanges: IX.br (PTT.br) Florianópolis: ATM/MPLA, IX.br (PTT.br) Curitiba: ATM/MPLA, IX.br (PTT.br) São Paulo: ATM/MPLA

AS267121 — global IP footprint

Cities where AS267121 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS267121 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
151.247.211.0/24 129,658 2026-07-24 15:53:21
187.84.150.0/24 74,931 2026-07-24 15:54:52
187.84.148.0/24 71,566 2026-07-24 15:54:44
187.84.149.0/24 71,487 2026-07-24 15:54:44
187.84.151.0/24 71,430 2026-07-24 15:54:44
187.84.148.0/22 69,288 2026-07-24 15:54:44
187.84.150.0/23 69,087 2026-07-24 15:54:44
187.84.148.0/23 69,070 2026-07-24 15:54:44
104.234.84.0/24 61,171 2026-07-24 15:54:48
104.234.90.0/24 59,384 2026-07-24 15:54:48
45.229.105.0/24 55,320 2026-07-24 15:54:51
45.229.107.0/24 55,207 2026-07-24 15:54:51
45.229.106.0/24 55,097 2026-07-24 15:54:51
45.229.104.0/22 52,975 2026-07-24 15:54:51
45.229.106.0/23 52,935 2026-07-24 15:54:51
45.229.104.0/23 52,887 2026-07-24 15:54:51
104.234.41.0/24 49,868 2026-07-24 15:53:04
45.229.104.0/24 45,512 2026-07-24 15:54:52
50.114.180.0/24 40,535 2026-07-24 15:52:31
151.247.210.0/24 40,170 2026-07-24 15:53:21
177.10.89.0/24 39,861 2026-07-24 15:46:50
50.114.61.0/24 33,848 2026-07-24 15:54:50
45.147.226.0/24 18,990 2026-07-24 15:52:26
151.247.210.0/23 4,905 2026-06-24 17:59:37

Frequently Asked Questions

What is AS267121?

AS267121 is an Autonomous System Number assigned to ATPlus 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 AS267121 announce?

AS267121 announces 4.4K IPv4 addresses distributed across 11 routed CIDR prefixes. The network is registered in Brazil.

Who operates AS267121?

AS267121 is operated by ATPlus Telecom. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.

What country is AS267121 registered in?

AS267121 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-24 15:55:31 UTC
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