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Autonomous System

AS43440 ยท digitalesuisse Digitale Suisse AG

Overview

AS43440 is announced on the Internet: RIPE RIS route collectors currently see 4 IPv4 prefixes and no IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 1,024 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 56 upstream neighbours (transit providers or peers) and 13 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), RETN Limited (AS9002), and Swisscom (Schweiz) AG (AS3303). AS43440 was assigned by RIPE NCC, and its registration country is Switzerland.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:58 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 185.227.148.1, the first address of 185.227.148.0/24. 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 (4 prefixes)

PrefixAddresses
185.227.148.0/24256
185.227.149.0/24256
185.227.150.0/24256
185.227.151.0/24256

IPv6 prefixes (none)

None currently seen.

Neighbours

Upstreams (transit or peers) (56)

ASNetworkVisibility
AS6939Hurricane Electric LLC1,926
AS9002RETN Limited596
AS3303Swisscom (Schweiz) AG349
AS174Cogent Communications, LLC189
AS8220COLT Technology Services Group Limited157
AS6762TELECOM ITALIA SPARKLE S.p.A.64
AS5511Opentransit Orange S.A.44
AS34549meerfarbig GmbH & Co. KG36
AS34019Hivane Association28
AS2914NTT America, Inc.26
AS34177Celeste SAS26
AS3935131173 Services AB26
AS34927iFog GmbH25
AS4230CLARO S.A.24
AS20485Joint Stock Company TransTeleCom24
AS5405Inter.link GmbH17
AS29075IELO-LIAZO SERVICES SAS17
AS13030Init7 (Switzerland) Ltd.16
AS35280F5 Networks SARL16
AS8218Zayo Infrastructure France SA15
AS24961WIIT AG15
AS25091IP-Max SA15
AS35625Eurofiber France SAS15
AS58057Securebit AG14
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH13
AS1836green.ch AG13
AS14840BR.Digital Telecom13
AS6797GlobalConnect AB12
AS60171AFR-IX TELECOM S.A.12
AS212024-12

The 30 most visible of 56.

Downstreams (customers) (13)

ASNetworkVisibility
AS51852Private Layer INC643
AS215740Netulu Incorporated494
AS264617GRUPO PANAGLOBAL 15 S.A401
AS135392MillenialHost Limited288
AS209413DEDIK SERVICES LIMITED287
AS58215Omniline Investment s.r.o.286
AS219429Project TA Consulting & Services UG286
AS216253Interhive OU285
AS219153ProjectX NETAXIS GROUP LTD285
AS204615IP Fiber Inc284
AS207471-277
AS209373-256
AS397702-109

94 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.