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Autonomous System

AS57118 ยท CommunityRack.org Verein

Overview

AS57118 is announced on the Internet: RIPE RIS route collectors currently see 6 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 2,048 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 19 upstream neighbours (transit providers or peers) and 57 downstream neighbours (customers or networks it carries). Its most visible upstreams are Sandro Bolliger trading as Bolliger Network Solutions (AS12307), IP-Max SA (AS25091), and Hurricane Electric LLC (AS6939). AS57118 was assigned by RIPE NCC, and its registration country is Switzerland.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:01 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 185.72.236.1, the first address of 185.72.236.0/23. 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 (6 prefixes)

PrefixAddresses
91.199.218.0/24256
185.72.236.0/23512
185.95.216.0/23512
185.95.218.0/24256
185.95.219.0/24256
185.104.19.0/24256

IPv6 prefixes (4 prefixes)

Prefix
2001:67c:2d70::/48
2a00:f740:400::/48
2a05:fc80::/29
2a05:fc87::/32

Neighbours

Upstreams (transit or peers) (19)

ASNetworkVisibility
AS12307Sandro Bolliger trading as Bolliger Network Solutions64,192
AS25091IP-Max SA1,508
AS6939Hurricane Electric LLC1,134
AS29691Nine Internet Solutions AG814
AS34927iFog GmbH21
AS14840BR.Digital Telecom16
AS3935131173 Services AB15
AS5405Inter.link GmbH13
AS34019Hivane Association13
AS209022Tschajera Limited13
AS29075IELO-LIAZO SERVICES SAS10
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH9
AS24961WIIT AG9
AS34177Celeste SAS9
AS47147-9
AS15576NTS workspace AG7
AS205794JINZE YANG6
AS47498FogIXP iFog GmbH5
AS48362-2

Downstreams (customers) (57)

ASNetworkVisibility
AS25091IP-Max SA46,122
AS6939Hurricane Electric LLC12,500
AS57463NetIX NetIX Communications JSC3,443
AS29691Nine Internet Solutions AG991
AS50263A-Systems Sp. z o.o.732
AS210036Rayhaan Ahmad Jaufeerally618
AS202771codenmore Codenmore AG438
AS59824Nashire AG423
AS42032Sandro Bolliger trading as Bolliger Network Solutions380
AS59808bolliger Sandro Bolliger trading as Bolliger Network Solutions374
AS35202-326
AS204082-324
AS57166-256
AS12307-235
AS57344Telehouse EAD97
AS212495-69
AS24940Hetzner Online GmbH68
AS59900Balkan Internet Exchange Ltd52
AS61049Exascale Ltd40
AS20495-37
AS34927iFog GmbH22
AS42093-8
AS49600-8
AS214757-8
AS58291-4
AS58299Openfactory GmbH3
AS39563-2
AS50272-2
AS52025ParadoxNetworks Limited2
AS200132Peter-Paul Maria Kurstjens2

The 30 most visible of 57.

37 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.