Skip to content

Autonomous System

AS206276 · Citelia s.a.

Overview

AS206276 is announced on the Internet: RIPE RIS route collectors currently see 12 IPv4 prefixes and no IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 11,520 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 10 upstream neighbours (transit providers or peers) and 9 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), Cogent Communications, LLC (AS174), and SAREnet, S.A. (AS3262). AS206276 was assigned by RIPE NCC, and its registration country is Spain.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:50 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 45.8.12.1, the first address of 45.8.12.0/22. 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 (12 prefixes)

PrefixAddresses
45.8.12.0/221,024
45.141.240.0/221,024
78.142.212.0/221,024
81.172.36.0/221,024
91.103.151.0/24256
178.251.16.0/221,024
185.179.184.0/221,024
185.190.100.0/221,024
193.38.144.0/221,024
193.38.224.0/221,024
194.49.56.0/221,024
212.63.112.0/221,024

IPv6 prefixes (none)

None currently seen.

Neighbours

Upstreams (transit or peers) (10)

ASNetworkVisibility
AS3356Level 3 Parent, LLC996
AS174Cogent Communications, LLC858
AS3262SAREnet, S.A.386
AS6939Hurricane Electric LLC150
AS3303Swisscom (Schweiz) AG69
AS8218Zayo Infrastructure France SA22
AS14840BR.Digital Telecom20
AS4455IX Reach Ltd10
AS22356Durand do Brasil Ltda8
AS60171AFR-IX TELECOM S.A.2

Downstreams (customers) (9)

ASNetworkVisibility
AS204542NUBIP TALK, S.L.U.266
AS200359Grupo Proveedor tecnologico Universal SL260
AS202767futurasp Futura Service Provider S.A.259
AS202531gastecom GASTECOM, SL258
AS210048semat Oficina Semat Data, SL258
AS216426Daratel Daratel TIC S.L258
AS202883comunitelia FATEN FACILITIES ENERGY TELECOM, S.L.257
AS208616Ausarta Conecta SL257
AS210692Soluciones y Asesoramiento en Telecomunicaciones S.L.257

7 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.