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

AS42772

ASN

RIPE NCC

RIR

391

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS42772

NameA1-BY-AS

OrganisationMNT-MDC

Country –

RIRRIPE NCC

Allocated13.04.2007

Abuse contactabuse@a1.by

Network Overview

IPv4 Prefixes391

IPv6 Prefixes19

Upstreams (Transit)4

Downstreams (Customers)8

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS12406Business Network Ltd AS60280National Traffic Exchange Center (Belarus)AS60330Belarusian Cloud Technologies LLC AS6697Beltelecom

AS42772A1-BY-AS

Downstreams (Customers)

AS205820Unitary enterprise A1 AS210871"VPI Development Center" Ltd AS212619Foreign unitary enterprise "SAMSOLUTIONS"AS39426Advanced Chemistry Development Inc.AS49091Telecom-garant Limited AS49526JSC MTBank+2

Upstreams (Transit) (4)

AS12406Business Network Ltd

AS60280National Traffic Exchange Center (Belarus)

AS60330Belarusian Cloud Technologies LLC

AS6697Beltelecom

Downstreams (Customers) (8)

AS205820Unitary enterprise A1

AS210871"VPI Development Center" Ltd

AS212619Foreign unitary enterprise "SAMSOLUTIONS"

AS39426Advanced Chemistry Development Inc.

AS49091Telecom-garant Limited

AS49526JSC MTBank

AS49682BNB-Bank OJSC

AS58076Joint Limited Liability Company Game Stream

IPv4 Prefixes (256)

91.149.152.0/24

91.149.133.0/24

87.252.248.0/24

93.125.7.0/24

217.21.54.0/24

185.61.106.0/23

46.53.190.0/23

46.53.144.0/24

128.65.16.0/22

151.249.176.0/21

151.249.160.0/21

178.172.240.0/24

46.53.137.0/24

213.184.248.0/24

213.184.255.0/24

46.53.176.0/22

87.252.247.0/24

178.163.135.0/24

213.184.244.0/24

37.17.6.0/23

195.222.66.0/24

46.53.218.0/24

93.125.51.0/24

46.53.133.0/24

213.184.224.0/22

46.53.145.0/24

93.125.116.0/23

77.74.39.0/24

93.125.69.0/24

95.46.202.0/23

91.149.184.0/24

46.53.165.0/24

46.56.214.0/23

92.38.64.0/21

213.184.252.0/24

128.140.240.0/24

46.56.224.0/21

77.74.38.0/24

128.65.2.0/23

213.184.254.0/24

91.149.144.0/21

128.65.1.0/24

93.125.63.0/24

46.53.152.0/21

93.171.120.0/21

93.125.68.0/24

93.125.10.0/24

46.53.141.0/24

178.163.196.0/22

46.56.184.0/21

46.53.217.0/24

46.53.240.0/21

178.163.140.0/22

46.56.248.0/21

151.249.246.0/23

91.149.134.0/24

46.53.149.0/24

46.182.48.0/21

37.17.118.0/24

195.222.80.0/21

146.120.144.0/21

77.74.32.0/21

93.125.55.0/24

213.184.249.0/24

46.53.138.0/24

46.53.220.0/22

95.46.46.0/24

46.56.130.0/23

46.53.163.0/24

87.252.231.0/24

46.56.168.0/21

87.252.255.0/24

178.172.205.0/24

93.125.47.0/24

46.56.176.0/20

178.172.200.0/24

128.140.240.0/20

151.249.216.0/21

213.184.226.0/24

195.222.90.0/24

151.249.196.0/22

91.149.130.0/24

195.222.67.0/24

77.74.34.0/24

91.149.186.0/24

195.222.73.0/24

93.125.115.0/24

46.56.232.0/21

46.53.198.0/23

178.163.160.0/24

93.125.64.0/24

46.53.189.0/24

46.53.134.0/24

46.53.146.0/24

46.53.150.0/24

195.222.72.0/24

37.17.20.0/22

46.53.219.0/24

93.125.32.0/24

213.184.245.0/24

151.249.240.0/22

46.53.142.0/23

93.125.13.0/24

151.249.192.0/22

91.149.128.0/21

95.46.24.0/22

178.172.158.0/24

178.163.128.0/17

46.53.167.0/24

46.53.132.0/24

93.125.46.0/24

46.53.160.0/21

178.163.130.0/24

37.17.48.0/20

93.125.16.0/24

128.65.8.0/21

46.56.144.0/20

93.191.100.0/24

46.53.129.0/24

178.163.206.0/23

151.249.128.0/18

93.125.12.0/24

93.125.15.0/24

178.172.210.0/24

151.249.208.0/21

93.191.101.0/24

46.53.221.0/24

93.125.112.0/24

195.222.80.0/24

93.170.184.0/24

213.184.224.0/24

178.163.134.0/24

217.21.60.0/24

195.222.91.0/24

195.222.68.0/24

213.184.225.0/24

91.149.182.0/24

178.163.133.0/24

178.163.128.0/24

151.249.245.0/24

46.53.186.0/24

93.125.125.0/24

128.65.6.0/23

37.17.119.0/24

37.17.40.0/21

46.53.164.0/24

91.149.153.0/24

151.249.168.0/21

178.172.146.0/24

178.172.241.0/24

195.222.64.0/20

93.125.67.0/24

178.163.200.0/23

46.53.212.0/22

95.46.16.0/22

178.172.147.0/24

213.184.232.0/24

46.53.216.0/24

128.65.4.0/23

178.163.152.0/21

178.163.164.0/24

93.125.5.0/24

151.249.144.0/22

37.17.8.0/21

91.149.191.0/24

178.163.144.0/21

217.21.46.0/24

91.149.168.0/24

217.21.51.0/24

77.74.37.0/24

213.184.233.0/24

128.65.40.0/21

93.125.119.0/24

93.125.102.0/24

178.172.159.0/24

195.222.64.0/24

37.17.96.0/20

128.65.20.0/22

151.249.200.0/21

128.65.60.0/22

178.172.176.0/24

217.21.33.0/24

178.172.144.0/24

151.249.244.0/23

93.125.86.0/24

217.21.59.0/24

93.191.96.0/22

93.191.102.0/24

178.163.161.0/24

46.53.248.0/21

151.249.244.0/24

151.249.232.0/21

93.125.17.0/24

93.125.4.0/24

195.222.71.0/24

178.163.131.0/24

46.53.130.0/24

178.163.168.0/21

178.163.163.0/24

46.53.216.0/22

46.53.223.0/24

93.191.103.0/24

178.163.204.0/23

195.222.88.0/23

178.163.208.0/21

146.120.32.0/22

46.53.135.0/24

93.125.74.0/24

128.65.0.0/18

46.56.208.0/24

46.53.220.0/24

46.56.192.0/21

178.172.207.0/24

195.222.70.0/24

178.163.132.0/24

87.252.254.0/24

128.65.56.0/22

87.252.239.0/24

91.149.135.0/24

46.53.222.0/24

46.53.147.0/24

37.17.112.0/22

46.56.200.0/21

128.65.24.0/22

128.65.32.0/21

46.53.131.0/24

151.249.184.0/21

77.74.36.0/24

178.172.157.0/24

46.53.195.0/24

93.125.11.0/24

93.125.9.0/24

93.125.101.0/24

93.125.66.0/24

178.172.145.0/24

91.149.154.0/24

46.53.207.0/24

151.249.152.0/21

46.53.136.0/21

92.38.72.0/21

93.125.81.0/24

195.222.92.0/24

37.17.120.0/21

46.53.194.0/24

46.53.210.0/24

46.56.134.0/24

93.125.57.0/24

93.125.41.0/24

46.53.193.0/24

213.184.251.0/24

95.46.200.0/21

185.61.105.0/24

93.125.80.0/24

93.125.56.0/24

91.149.128.0/24

46.53.206.0/24

IPv6 Prefixes (19)

2a00:1761::/32

2a00:1761:a100::/40

2a00:1761:a300::/40

2a00:1763:8000::/40

2a00:1761:a200::/40

2a00:1761:a000::/35

2a00:1760:8000::/40

2a00:1761:a000::/40

2a00:1765:8000::/40

2a00:1762::/32

2a00:1762:8100::/40

2a00:1760:8100::/40

2a00:1763::/32

2a00:1763:8100::/40

2a03:3000::/32

2a00:1765:8100::/40

2a00:1762:8000::/40

2a00:1765::/32

2a00:1760::/32

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.