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

AS51859

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS51859

NameMNSHA-AS

OrganisationMNSHA-MNT

Country –

RIRRIPE NCC

Allocated17.11.2010

Abuse contactabuse@mainstream.rs

Network Overview

IPv4 Prefixes35

IPv6 Prefixes3

Upstreams (Transit)7

Downstreams (Customers)0

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS13004Serbian Open Exchange DOO AS15958CETIN Ltd. Belgrade AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd AS31042Yettel d.o.o.AS3212Telemach Slovenija d.o.o.AS8400Telekom Srbija a.d.+1

AS51859MNSHA-AS

Downstreams (Customers)

none

Upstreams (Transit) (7)

AS13004Serbian Open Exchange DOO

AS15958CETIN Ltd. Belgrade

AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd

AS31042Yettel d.o.o.

AS3212Telemach Slovenija d.o.o.

AS8400Telekom Srbija a.d.

AS8866Vivacom Bulgaria EAD

IPv4 Prefixes (35)

87.237.200.0/21

91.222.7.0/24

91.222.5.0/24

185.29.102.0/24

91.185.218.0/23

91.222.6.0/24

185.167.146.0/24

188.93.121.0/24

91.222.4.0/22

188.93.123.0/24

92.249.52.0/22

91.185.199.0/24

87.237.204.0/24

185.167.147.0/24

188.93.122.0/24

87.237.207.0/24

91.222.4.0/24

91.185.223.0/24

87.237.206.0/24

212.72.214.0/24

185.29.100.0/24

185.168.19.0/24

87.237.205.0/24

188.93.120.0/22

185.167.144.0/22

91.214.200.0/22

87.237.203.0/24

185.29.100.0/22

87.237.201.0/24

206.15.32.0/20

185.29.103.0/24

185.29.101.0/24

188.93.120.0/24

87.237.202.0/24

213.91.181.0/24

IPv6 Prefixes (3)

2a04:2e40::/29

2a04:2e40:4000::/34

2a04:2e40::/34

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.