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Tool
ASN Lookup
Networks, upstreams, peers and prefixes of an autonomous system
AS45903
ASN
APNIC
RIR
348
IPv4 Prefixes
138
IPv6 Prefixes
AS Information
ASNAS45903
NameCMCTELECOM-VN
Country VN VN
RIRAPNIC
Allocated25.11.2009
Abuse contacthm-changed@vnnic.vn
Network Overview
IPv4 Prefixes348
IPv6 Prefixes138
Upstreams IPv410
BGP Peers IPv4235
Upstreams (Transit Providers)
IPv4
AS1031 PEER1-1031
AS1103 SURFNET-NL
AS12552 GlobalConnect-AS12552
AS12577 MMC-AT-AS
AS1267 ASN-WINDTRE
AS12779 ITGATE
AS12859 NL-BIT
AS13194 BITE
AS137409 GSLNETWORKS-AS-AP
AS15412 FLAG-AS
IPv4 Prefixes (348 total, showing 20)
203.171.21.0/24
103.246.220.0/22
183.91.8.0/22
113.20.107.0/24
101.99.18.0/23
183.91.9.0/24
101.99.46.0/24
113.20.122.0/24
101.99.54.0/23
101.99.62.0/23
183.91.16.0/23
101.99.36.0/24
101.99.44.0/23
203.171.28.0/23
113.20.125.0/24
42.96.53.0/24
101.99.56.0/21
203.205.47.0/24
101.99.28.0/24
183.91.30.0/24
IPv6 Prefixes (138 total, showing 10)
2402:5300:201a::/48
2402:5300:600::/44
2402:5300:4107::/48
2402:5300:1208::/48
2402:5300:4504::/48
2402:5300:2406::/48
2402:5300:1300::/40
2402:5300:412::/48
2402:5300:4507::/48
2402:5300:400d::/48
BGP Peers IPv4 (235 total, showing 20)
AS131127
AS131128
AS131129
AS131130
AS131344
AS131348
AS131351
AS131354
AS131357
AS131360
AS131364
AS131383
AS131386
AS131391
AS131392
AS131398
AS131410
AS131411
AS131421
AS131423
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.

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