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Autonomous System

AS57304 · JSC "RetnNet"

Overview

AS57304 is announced on the Internet: RIPE RIS route collectors currently see 5 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 13,824 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 71 upstream neighbours (transit providers or peers) and 441 downstream neighbours (customers or networks it carries). Its most visible upstreams are meerfarbig GmbH & Co. KG (AS34549), Network Platforms (PTY) LTD (AS37497), and iFog GmbH (AS34927). AS57304 was assigned by RIPE NCC, and its registration country is Russia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:59 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 139.45.224.1, the first address of 139.45.224.0/19. 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 (5 prefixes)

PrefixAddresses
46.8.177.0/24256
87.245.192.0/204,096
109.248.196.0/24256
139.45.224.0/198,192
185.134.72.0/221,024

IPv6 prefixes (1 prefix)

Prefix
2a02:2d9::/32

Neighbours

Upstreams (transit or peers) (71)

ASNetworkVisibility
AS34549meerfarbig GmbH & Co. KG3,178
AS37497Network Platforms (PTY) LTD2,140
AS34927iFog GmbH2,053
AS6939Hurricane Electric LLC2,034
AS34177Celeste SAS1,987
AS12637SEEWEB s.r.l.1,966
AS14840BR.Digital Telecom1,918
AS9002RETN Limited1,804
AS48362Stadtwerke Feldkirch1,613
AS8758Iway AG1,594
AS50304Blix Solutions AS1,445
AS8298IPng Networks GmbH1,401
AS34019Hivane Association1,349
AS61049Exascale Ltd1,320
AS29691Nine Internet Solutions AG1,312
AS5405Inter.link GmbH1,176
AS47147Anexia Cloud Solutions GmbH1,146
AS24961WIIT AG1,016
AS55850-938
AS30844Liquid Telecommunications Ltd870
AS35280F5 Networks SARL861
AS35625Eurofiber France SAS825
AS3935131173 Services AB806
AS50673Serverius Holding B.V.724
AS4455IX Reach Ltd701
AS4657StarHub Ltd701
AS44901-648
AS41327Fiber Telecom S.p.A.595
AS25091IP-Max SA582
AS12577-539

The 30 most visible of 71.

Downstreams (customers) (441)

ASNetworkVisibility
AS9049JSC "ER-Telecom Holding"21,712
AS201706SERVICEPIPE LLC5,260
AS6789CRELCOM LLC3,862
AS8985Join-stock company "Internet Exchange"MSK-IX"3,000
AS8732JSC Comcor2,325
AS48084Uzhnie Magistraljnie Linii Svyazi LLC2,287
AS29226JSC Mastertel2,130
AS47122CYBERFIRST LLC1,222
AS8641LLC "Nauka-Svyaz"1,178
AS35000JSC "Severen-Telecom"1,162
AS52091-1,133
AS60280-1,046
AS47502-1,003
AS196695-802
AS6697-649
AS6856-649
AS10122NETSTAR (SG) PTE. LTD.631
AS197204-620
AS49063-588
AS24955-579
AS48479-543
AS62067-539
AS47626-535
AS61400-524
AS208349-515
AS28890-494
AS35645-489
AS60042-489
AS43048-488
AS60840-449

The 30 most visible of 441.

490 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.