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Autonomous System

AS1853 · ACOnet - ACONET

Overview

AS1853 is announced on the Internet: RIPE RIS route collectors currently see 17 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 334,592 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 31 upstream neighbours (transit providers or peers) and 120 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH (AS1764), and GEANT Vereniging (AS21320). AS1853 was assigned by ARIN, and its registration country is Austria.

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 193.170.0.1, the first address of 193.170.0.0/15. 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 (17 prefixes)

PrefixAddresses
78.104.0.0/1665,536
138.22.0.0/1665,536
144.65.0.0/1665,536
185.154.40.0/221,024
192.88.23.0/24256
192.88.24.0/24256
192.149.232.0/24256
192.153.173.0/24256
192.153.174.0/24256
192.153.175.0/24256
192.153.177.0/24256
192.189.51.0/24256
193.170.0.0/15131,072
194.37.4.0/221,024
194.37.8.0/212,048
194.246.32.0/24256
195.177.250.0/23512

IPv6 prefixes (2 prefixes)

Prefix
2001:628::/29
2001:67c:1864::/48

Neighbours

Upstreams (transit or peers) (31)

ASNetworkVisibility
AS6939Hurricane Electric LLC6,221
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH2,410
AS21320GEANT Vereniging1,630
AS9002RETN Limited430
AS20965GEANT Vereniging269
AS3303Swisscom (Schweiz) AG136
AS13030Init7 (Switzerland) Ltd.124
AS47147Anexia Cloud Solutions GmbH109
AS50629LWLcom GmbH99
AS2852CESNET z.s.p.o.94
AS15958CETIN Ltd. Belgrade89
AS5405Inter.link GmbH75
AS33891Core-Backbone GmbH60
AS14840BR.Digital Telecom58
AS8220COLT Technology Services Group Limited46
AS8218Zayo Infrastructure France SA44
AS48362Stadtwerke Feldkirch36
AS6204INTERKVM HOST SRL32
AS35492-27
AS2607-22
AS8501-22
AS22356Durand do Brasil Ltda9
AS1121-2
AS41327Fiber Telecom S.p.A.2
AS5400-1
AS6663Euroweb Romania S.R.L.1
AS9009M247 Europe SRL1
AS9498BHARTI Airtel Ltd.1
AS29208-1
AS39120Convergenze S.p.A.1

The 30 most visible of 31.

Downstreams (customers) (120)

ASNetworkVisibility
AS6939Hurricane Electric LLC48,420
AS9002RETN Limited4,347
AS20965GEANT Vereniging1,209
AS21320GEANT Vereniging1,134
AS8220COLT Technology Services Group Limited1,026
AS13335Cloudflare, Inc.1,016
AS32787Akamai Technologies, Inc.715
AS1113Technische Universitaet Graz573
AS47515Bundesministerium fuer Inneres, Sektion IV528
AS8501Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center525
AS2852-520
AS2488-477
AS760-415
AS2494-348
AS1205-345
AS34883-341
AS39837-338
AS210543-331
AS39057-328
AS206021-328
AS679-294
AS30971-293
AS1109-290
AS1114-290
AS1115-290
AS1776-290
AS41915-290
AS213181-290
AS1112-289
AS1111-288

The 30 most visible of 120.

59 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.