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Autonomous System

AS21385 ยท Trusted Network GmbH

Overview

AS21385 is announced on the Internet: RIPE RIS route collectors currently see 13 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 28,928 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 72 upstream neighbours (transit providers or peers) and 11 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), Arelion Sweden AB (AS1299), and Hurricane Electric LLC (AS6939). AS21385 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:53 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 86.110.64.1, the first address of 86.110.64.0/19. 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 (13 prefixes)

PrefixAddresses
81.92.160.0/204,096
81.92.164.0/24256
86.110.64.0/198,192
185.55.120.0/221,024
185.55.122.0/24256
192.55.84.0/24256
192.109.24.0/24256
193.19.236.0/221,024
193.110.24.0/221,024
193.189.110.0/23512
194.88.10.0/24256
212.82.160.0/198,192
217.151.80.0/204,096

IPv6 prefixes (1 prefix)

Prefix
2001:1b18::/32

Neighbours

Upstreams (transit or peers) (72)

ASNetworkVisibility
AS3356Level 3 Parent, LLC374
AS1299Arelion Sweden AB331
AS6939Hurricane Electric LLC181
AS3320Deutsche Telekom AG67
AS48362Stadtwerke Feldkirch31
AS33891Core-Backbone GmbH24
AS13030Init7 (Switzerland) Ltd.22
AS25091IP-Max SA20
AS34549meerfarbig GmbH & Co. KG20
AS6461Zayo Bandwidth19
AS24482SG.GS19
AS4230CLARO S.A.16
AS34019Hivane Association16
AS47147Anexia Cloud Solutions GmbH16
AS5405Inter.link GmbH15
AS34927iFog GmbH15
AS35625Eurofiber France SAS15
AS14840BR.Digital Telecom14
AS1267WIND TRE S.P.A.12
AS8298IPng Networks GmbH12
AS20485Joint Stock Company TransTeleCom12
AS20764CJSC RASCOM12
AS24961WIIT AG12
AS29632Netassist International EOOD12
AS29691Nine Internet Solutions AG12
AS35280F5 Networks SARL12
AS9002RETN Limited11
AS12779IT.Gate S.p.A.11
AS37468Angola Cables11
AS3935131173 Services AB11

The 30 most visible of 72.

Downstreams (customers) (11)

ASNetworkVisibility
AS25504Vautron Rechenzentrum AG479
AS12907ip&more GmbH343
AS394977TAKE-TWO INTERACTIVE SOFTWARE, INC.260
AS198296Burda Digital Systems GmbH152
AS21476all-connect Data Communications GmbH128
AS48484IGN GmbH107
AS5539SpaceNet AG62
AS8319NETHINKS GmbH53
AS51483SaSG GmbH & Co. KG34
AS8823AutonomousSystemRockensteinAG Rockenstein AG8
AS20751-5

73 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.