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

AS27781

ASN

LACNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS27781

Name27781

OrganisationSMITCOMS N.V.

Country –

RIRLACNIC

Allocated04.08.2005

Abuse contactenhancednetworks@telemgroup.sx

Network Overview

IPv4 Prefixes22

IPv6 Prefixes3

Upstreams (Transit)3

Downstreams (Customers)3

BGP Peers1

AS Path (BGP neighbours)

Upstreams (Transit)

AS12956Telxius (Telefonica Global)AS23520Columbus Networks USA, Inc.AS701Verizon Business

AS2778127781

Downstreams (Customers)

AS20940Akamai International B.V.AS262181Coral Telecom N.V.AS262188Satel NV

Upstreams (Transit) (3)

AS12956Telxius (Telefonica Global)

AS23520Columbus Networks USA, Inc.

AS701Verizon Business

Downstreams (Customers) (3)

AS20940Akamai International B.V.

AS262181Coral Telecom N.V.

AS262188Satel NV

IPv4 Prefixes (22)

131.161.87.0/24

201.220.8.0/24

168.0.86.0/23

201.220.1.0/24

131.161.84.0/22

201.220.0.0/24

201.220.0.0/20

65.217.50.0/24

201.220.11.0/24

131.161.85.0/24

168.197.108.0/22

201.220.13.0/24

65.248.160.0/24

201.220.12.0/24

201.220.9.0/24

168.0.84.0/22

65.198.230.0/24

72.252.8.0/21

131.161.84.0/23

168.0.84.0/23

190.124.216.0/22

131.161.86.0/24

IPv6 Prefixes (3)

2803:7380:8000::/34

2803:7380:c000::/34

2800:280::/32

BGP Peers (1)

AS19151BroadbandONE, LLC

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.