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Autonomous System

AS47065 · USC / UFMG PEERING Research Testbed

Overview

AS47065 is announced on the Internet: RIPE RIS route collectors currently see 16 IPv4 prefixes and 156 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 4,096 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 67 upstream neighbours (transit providers or peers) and 6 downstream neighbours (customers or networks it carries). Its most visible upstreams are The Constant Company, LLC (AS20473), Utah Education Network (AS210), and Rede Nacional de Ensino e Pesquisa (AS1916). AS47065 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:58 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 138.185.230.1

The trace goes to 138.185.230.1, the first address of 138.185.230.0/24. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (16 prefixes)

PrefixAddresses
138.185.230.0/24256
138.185.231.0/24256
184.164.230.0/24256
184.164.231.0/24256
184.164.234.0/24256
184.164.237.0/24256
184.164.240.0/24256
184.164.241.0/24256
184.164.242.0/24256
184.164.243.0/24256
184.164.244.0/24256
184.164.245.0/24256
184.164.250.0/24256
184.164.251.0/24256
184.164.255.0/24256
204.9.171.0/24256

IPv6 prefixes (156 prefixes)

Prefix
2804:269c:10::/48
2804:269c:11::/48
2804:269c:12::/48
2804:269c:13::/48
2804:269c:14::/48
2804:269c:16::/48
2804:269c:1c::/46
2804:269c:80b9::/48
2804:269c:80ba::/48
2804:269c:80bb::/48
2804:269c:80bc::/48
2804:269c:80bd::/48
2804:269c:80c0::/48
2804:269c:80c1::/48
2804:269c:80c3::/48
2804:269c:80c8::/48
2804:269c:80c9::/48
2804:269c:80cb::/48
2804:269c:80cc::/48
2804:269c:80d0::/48
2804:269c:80d1::/48
2804:269c:80d2::/48
2804:269c:80d8::/48
2804:269c:80d9::/48
2804:269c:80da::/48
2804:269c:80db::/48
2804:269c:80e0::/48
2804:269c:80e1::/48
2804:269c:80e2::/48
2804:269c:80e3::/48
2804:269c:80e8::/48
2804:269c:80e9::/48
2804:269c:80ea::/48
2804:269c:80eb::/48
2804:269c:80f0::/48
2804:269c:80f1::/48
2804:269c:80f4::/48
2804:269c:80f5::/48
2804:269c:80f9::/48
2804:269c:80fa::/48
2804:269c:80fb::/48
2804:269c:80fc::/48
2804:269c:8100::/48
2804:269c:8101::/48
2804:269c:8103::/48
2804:269c:8104::/48
2804:269c:8105::/48
2804:269c:8108::/48
2804:269c:8109::/48
2804:269c:810a::/48
2804:269c:8118::/48
2804:269c:8119::/48
2804:269c:811a::/48
2804:269c:811b::/48
2804:269c:8120::/48
2804:269c:8121::/48
2804:269c:8123::/48
2804:269c:8129::/48
2804:269c:812a::/48
2804:269c:812b::/48
2804:269c:8130::/48
2804:269c:8131::/48
2804:269c:8132::/48
2804:269c:8138::/48
2804:269c:8139::/48
2804:269c:813a::/48
2804:269c:813b::/48
2804:269c:8140::/48
2804:269c:8141::/48
2804:269c:8148::/48
2804:269c:8150::/48
2804:269c:8151::/48
2804:269c:8152::/48
2804:269c:8153::/48
2804:269c:8154::/48
2804:269c:8158::/48
2804:269c:815a::/48
2804:269c:815b::/48
2804:269c:815c::/48
2804:269c:8160::/48
2804:269c:8161::/48
2804:269c:8162::/48
2804:269c:8168::/48
2804:269c:8169::/48
2804:269c:8170::/48
2804:269c:8171::/48
2804:269c:8173::/48
2804:269c:8178::/48
2804:269c:8179::/48
2804:269c:817a::/48
2804:269c:817b::/48
2804:269c:8180::/48
2804:269c:8181::/48
2804:269c:8183::/48
2804:269c:8184::/48
2804:269c:8185::/48
2804:269c:8188::/48
2804:269c:818a::/48
2804:269c:8190::/48
2804:269c:8191::/48

Showing the first 100 of 156, in address order. Complete list on RIPEstat

Neighbours

Upstreams (transit or peers) (67)

ASNetworkVisibility
AS20473The Constant Company, LLC8,266
AS210Utah Education Network692
AS1916Rede Nacional de Ensino e Pesquisa664
AS12148Clemson University612
AS5408National Infrastructures for Research and Technology S.A.571
AS8283Netwerkvereniging Coloclue569
AS9002RETN Limited550
AS6939Hurricane Electric LLC507
AS226Los Nettos501
AS263444Open X Tecnologia Ltda329
AS33652-289
AS46887Crown Castle Fiber LLC288
AS3128-285
AS22645LEARN235
AS12859-217
AS3303Swisscom (Schweiz) AG23
AS6461Zayo Bandwidth21
AS34019Hivane Association20
AS7195EDGEUNO S.A.S18
AS35280F5 Networks SARL17
AS3130-15
AS25091IP-Max SA15
AS29075IELO-LIAZO SERVICES SAS14
AS34177Celeste SAS13
AS3216PJSC "Vimpelcom"11
AS3935131173 Services AB11
AS20764CJSC RASCOM10
AS5405Inter.link GmbH9
AS12779-9
AS37100SEACOM Limited9

The 30 most visible of 67.

Downstreams (customers) (6)

ASNetworkVisibility
AS61574UNIVERSIDADE FEDERAL DE MINAS GERAIS4,873
AS14041University Corporation for Atmospheric Research288
AS46887Crown Castle Fiber LLC286
AS8447A1 Telekom Austria AG269
AS13237euNetworks GmbH263
AS3356Level 3 Parent, LLC234

60 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.

Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.

How to read this page

An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.

A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.

Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.

The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.