An Autonomous System Number (ASN) is a unique number assigned to a network in global internet routing. Every provider that participates directly on the internet has its own ASN (e.g. AS15169 for Google).

What are upstreams, peers and prefixes?

Upstreams are transit providers through which an AS reaches the internet. Peers are networks with direct traffic exchange. Prefixes are the IP address ranges the AS announces via BGP.

Where does the ASN data come from?

The data comes from the official RDAP services of the RIRs (RIPE, ARIN, etc.) and from RIPEstat (prefixes and neighbour ASNs).

ASN Lookup – Networks, Upstreams and Prefixes

AS275754

ASN

–

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS275754

NameASN275754

OrganisationM H M DOS SANTOS FIBRA

Country

RIR–

Allocated25.05.2026

Abuse contacthelena.mendess.santos@gmail.com

Network Overview

IPv4 Prefixes1

IPv6 Prefixes2

Upstreams (Transit)4

Downstreams (Customers)1

BGP Peers13

AS Path (BGP neighbours)

Upstreams (Transit)

AS269194ST1 INTERNET AS269658HUGS TELECOM AS6057Administracion Nacional de Telecomunicaciones AS6939Hurricane Electric LLC

AS275754ASN275754

Downstreams (Customers)

AS269658HUGS TELECOM

Upstreams (Transit) (4)

AS269194ST1 INTERNET

AS269658HUGS TELECOM

AS6057Administracion Nacional de Telecomunicaciones

AS6939Hurricane Electric LLC

Downstreams (Customers) (1)

AS269658HUGS TELECOM

IPv4 Prefixes (1)

24.152.117.0/24

IPv6 Prefixes (2)

2804:9910::/32

2804:6cdc:4000::/34

BGP Peers (13)

AS199524Gcore S.A.

AS22548Núcleo de Informação e Coordenação do Ponto BR - NIC.BR

AS24482SG.GS

AS263152MIGO TELECOM

AS263237PowerHost Telecom SPA

AS264479Turbozone Internet

AS28624Oops Internet

AS35280F5 Networks SARL

AS36236NetActuate, Inc

AS51185MainStreaming SpA

AS52873Softdados Telecomunicações

AS60503FNX Tecnologia LTDA

AS61573

My IP ASN Lookup IP Lookup WHOIS DNS Lookup

What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.