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

AS263831

ASN

LACNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS263831

Name263831

OrganisationContraloria General de la Republica

Country –

RIRLACNIC

Allocated31.08.2015

Abuse contactgreivin.barrantes@cgr.go.cr

Network Overview

IPv4 Prefixes1

IPv6 Prefixes1

Upstreams (Transit)2

Downstreams (Customers)0

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS262197MILLICOM CABLE COSTA RICA S.A.AS52263Telecable Economico S.A.

AS263831263831

Downstreams (Customers)

none

Upstreams (Transit) (2)

AS262197MILLICOM CABLE COSTA RICA S.A.

AS52263Telecable Economico S.A.

IPv4 Prefixes (1)

200.33.85.0/24

IPv6 Prefixes (1)

2801:1f:2000::/48

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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.