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Autonomous System

AS31042 · Yettel d.o.o.

Overview

AS31042 is announced on the Internet: RIPE RIS route collectors currently see 23 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 496,640 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 64 upstream neighbours (transit providers or peers) and 56 downstream neighbours (customers or networks it carries). Its most visible upstreams are CETIN Ltd. Belgrade (AS15958), Serbian Open Exchange DOO (AS13004), and UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd (AS21215). AS31042 was assigned by RIPE NCC, and its registration country is Serbia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 18, 2026 at 4:06 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 178.148.0.1, the first address of 178.148.0.0/15. 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 (23 prefixes)

PrefixAddresses
5.22.160.0/198,192
24.135.0.0/1665,536
46.17.144.0/212,048
46.240.128.0/1732,768
80.93.224.0/198,192
82.117.192.0/198,192
82.117.195.0/24256
87.116.128.0/1816,384
89.216.0.0/1665,536
89.216.0.0/1732,768
89.216.128.0/1732,768
91.143.208.0/204,096
94.127.0.0/212,048
94.189.128.0/1732,768
94.230.176.0/204,096
95.180.0.0/1732,768
176.106.120.0/212,048
176.108.32.0/204,096
178.148.0.0/15131,072
188.2.0.0/1665,536
188.246.32.0/198,192
213.244.224.0/221,024
217.26.208.0/212,048

IPv6 prefixes (2 prefixes)

Prefix
2a00:1dd8::/29
2a03:87c0::/29

Neighbours

Upstreams (transit or peers) (64)

ASNetworkVisibility
AS15958CETIN Ltd. Belgrade6,083
AS13004Serbian Open Exchange DOO554
AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd159
AS4230CLARO S.A.131
AS34549meerfarbig GmbH & Co. KG129
AS34019Hivane Association123
AS25091IP-Max SA121
AS34927iFog GmbH118
AS35280F5 Networks SARL109
AS35625Eurofiber France SAS92
AS5405Inter.link GmbH90
AS34177Celeste SAS86
AS8758-84
AS12779IT.Gate S.p.A.84
AS29691Nine Internet Solutions AG84
AS3935131173 Services AB84
AS24961WIIT AG83
AS14840BR.Digital Telecom82
AS20485Joint Stock Company TransTeleCom81
AS48362Stadtwerke Feldkirch80
AS20764CJSC RASCOM78
AS37100SEACOM Limited74
AS29075IELO-LIAZO SERVICES SAS64
AS8298IPng Networks GmbH51
AS41327Fiber Telecom S.p.A.48
AS6797GlobalConnect AB44
AS4455IX Reach Ltd43
AS6939Hurricane Electric LLC43
AS37468-43
AS47147Anexia Cloud Solutions GmbH42

The 30 most visible of 64.

Downstreams (customers) (56)

ASNetworkVisibility
AS203877astratelekom ASTRA TELEKOM DOO BEOGRAD848
AS57595Netlogic doo546
AS200287BOBAN CAKIC trading as INTERNET SERVIS IBS546
AS62012GeneraliSrbija Generali Osiguranje Srbija350
AS52026TRUF d.o.o.326
AS201047Meridian Tech d.o.o.285
AS49167COMUTEL d.o.o.274
AS51002ASTRA TELEKOM DOO BEOGRAD274
AS25337ALL IP DOO273
AS42860Energy Financing Team (Switzerland) AG273
AS47663-273
AS57550-273
AS206402-273
AS44301-272
AS48177-272
AS51908-272
AS56576-272
AS203512-272
AS49200-271
AS59544-271
AS204215-269
AS212897-267
AS198237-266
AS50653-260
AS12189PhoenixNAP LLC258
AS58179-256
AS200126-255
AS31161-248
AS49486-246
AS205620-186

The 30 most visible of 56.

92 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.