Skip to content

Autonomous System

AS35205 ยท RFT Kabel Brandenburg GmbH

Overview

AS35205 is announced on the Internet: RIPE RIS route collectors currently see 18 IPv4 prefixes and 5 IPv6 prefixes 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 63 upstream neighbours (transit providers or peers) and no downstream neighbour (customers or networks it carries). Its most visible upstreams are TELE AG (AS58243), Hurricane Electric LLC (AS6939), and RETN Limited (AS9002). AS35205 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:48 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 77.78.160.1, the first address of 77.78.160.0/19. 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 (18 prefixes)

PrefixAddresses
46.28.80.0/212,048
77.78.160.0/198,192
77.78.160.0/204,096
77.78.176.0/204,096
77.78.181.0/24256
77.78.184.0/221,024
77.78.188.0/221,024
80.84.192.0/198,192
80.84.192.0/204,096
80.84.192.0/221,024
80.84.208.0/204,096
80.84.208.0/212,048
185.27.152.0/221,024
185.48.208.0/221,024
194.126.129.0/24256
212.37.160.0/198,192
212.37.160.0/204,096
212.37.176.0/204,096

IPv6 prefixes (5 prefixes)

Prefix
2a03:ed00::/32
2a04:a080::/29
2a04:a080::/30
2a04:a084::/30
2a05:3700::/29

Neighbours

Upstreams (transit or peers) (63)

ASNetworkVisibility
AS58243TELE AG474
AS6939Hurricane Electric LLC75
AS9002RETN Limited7
AS13030Init7 (Switzerland) Ltd.6
AS5405Inter.link GmbH5
AS33891Core-Backbone GmbH4
AS34549meerfarbig GmbH & Co. KG4
AS35280F5 Networks SARL4
AS35625Eurofiber France SAS4
AS4230CLARO S.A.3
AS7195EDGEUNO S.A.S3
AS8218Zayo Infrastructure France SA3
AS20562Broadband Hosting B.V.3
AS25091IP-Max SA3
AS29632Netassist International EOOD3
AS34019Hivane Association3
AS34927iFog GmbH3
AS37468Angola Cables3
AS50629LWLcom GmbH3
AS137409GSL Networks Pty LTD3
AS1267WIND TRE S.P.A.2
AS6797GlobalConnect AB2
AS8298IPng Networks GmbH2
AS8758-2
AS12779IT.Gate S.p.A.2
AS12859BIT BV2
AS14840BR.Digital Telecom2
AS15802Emirates Integrated Telecommunications Company PJSC2
AS20485Joint Stock Company TransTeleCom2
AS20764CJSC RASCOM2

The 30 most visible of 63.

Downstreams (customers) (0)

None seen.

54 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.