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Autonomous System

AS15704 · XTRA TELECOM S.A.

Overview

AS15704 is announced on the Internet: RIPE RIS route collectors currently see 313 IPv4 prefixes and 55 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 848,640 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 26 upstream neighbours (transit providers or peers) and 68 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Level 3 Parent, LLC (AS3356), and Cogent Communications, LLC (AS174). AS15704 was assigned by RIPE NCC, and its registration country is Spain.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:59 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 212.230.0.1

The trace goes to 212.230.0.1, the first address of 212.230.0.0/15. 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 (313 prefixes)

PrefixAddresses
31.221.128.0/198,192
31.221.160.0/198,192
31.221.192.0/198,192
31.221.224.0/198,192
31.222.80.0/204,096
31.222.88.0/24256
31.222.89.0/24256
31.222.90.0/24256
37.29.128.0/1816,384
37.29.192.0/1816,384
46.6.0.0/1816,384
46.6.16.0/212,048
46.6.24.0/212,048
46.6.32.0/212,048
46.6.40.0/212,048
46.6.48.0/212,048
46.6.56.0/212,048
46.6.112.0/24256
46.6.113.0/24256
46.6.114.0/24256
46.6.116.0/221,024
46.6.120.0/221,024
46.6.124.0/221,024
46.6.128.0/1732,768
46.222.0.0/1732,768
46.222.128.0/1816,384
46.222.192.0/1816,384
66.81.160.0/212,048
66.81.168.0/212,048
66.81.176.0/212,048
66.81.184.0/212,048
67.218.224.0/212,048
67.218.232.0/212,048
67.218.240.0/212,048
67.218.248.0/212,048
77.27.140.0/221,024
77.27.148.0/221,024
77.241.48.0/204,096
78.30.0.0/1816,384
78.30.0.0/212,048
78.30.8.0/212,048
78.30.16.0/212,048
78.30.24.0/212,048
78.30.32.0/204,096
78.30.48.0/204,096
80.81.96.0/198,192
81.0.0.0/1816,384
81.0.0.0/204,096
81.0.16.0/204,096
82.144.0.0/198,192
82.213.192.0/204,096
82.213.208.0/204,096
82.213.224.0/198,192
83.138.40.0/212,048
83.165.112.0/212,048
83.175.192.0/1816,384
84.39.176.0/212,048
85.31.128.0/221,024
85.31.132.0/221,024
85.85.104.0/212,048
85.85.112.0/204,096
85.85.160.0/212,048
85.85.168.0/212,048
85.85.176.0/212,048
85.85.184.0/212,048
85.85.200.0/212,048
85.85.224.0/204,096
85.86.24.0/212,048
85.86.32.0/212,048
85.86.56.0/212,048
85.86.64.0/212,048
85.86.176.0/221,024
85.86.180.0/23512
85.86.182.0/24256
85.86.183.0/24256
85.86.184.0/212,048
85.86.208.0/212,048
85.86.216.0/221,024
85.86.232.0/212,048
85.86.240.0/221,024
85.86.244.0/221,024
85.86.248.0/221,024
85.86.252.0/23512
85.86.254.0/23512
85.87.0.0/23512
85.87.2.0/23512
85.87.4.0/23512
85.87.6.0/23512
85.87.8.0/221,024
85.87.12.0/221,024
85.87.16.0/23512
85.87.18.0/23512
85.87.20.0/23512
85.87.22.0/23512
85.87.120.0/221,024
85.87.128.0/212,048
85.87.136.0/212,048
85.87.144.0/212,048
85.87.152.0/212,048
85.87.160.0/221,024

Showing the first 100 of 313, in address order. Complete list on RIPEstat

IPv6 prefixes (55 prefixes)

Prefix
2a00:d100::/37
2a00:d100:800::/37
2a00:d100:1000::/37
2a00:d100:1800::/37
2a00:d100:2000::/37
2a00:d100:2800::/37
2a00:d100:3000::/37
2a00:d100:3800::/37
2a00:d100:4000::/37
2a00:d100:4800::/37
2a00:d100:5000::/37
2a00:d100:5800::/37
2a00:d100:6000::/37
2a00:d100:6800::/37
2a00:d100:7000::/37
2a00:d100:7800::/37
2a00:d100:8000::/37
2a00:d100:8800::/37
2a00:d100:9000::/37
2a00:d100:9800::/37
2a00:d101::/37
2a00:d101:800::/37
2a00:d101:1000::/37
2a00:d101:1800::/37
2a00:d101:2000::/37
2a00:d101:2800::/37
2a00:d101:3000::/37
2a00:d101:3800::/37
2a00:d101:4000::/37
2a00:d101:4800::/37
2a00:d102::/37
2a00:d102:800::/37
2a00:d102:1000::/37
2a00:d102:1800::/37
2a00:d102:2000::/37
2a00:d102:2800::/37
2a00:d102:3000::/37
2a00:d102:3800::/37
2a00:d102:4000::/37
2a00:d102:4800::/37
2a00:d102:5000::/37
2a00:d102:5800::/37
2a00:d103::/37
2a00:d103:800::/37
2a00:d103:1000::/37
2a00:d103:1800::/37
2a00:d103:2000::/37
2a00:d103:2800::/37
2a01:8480::/32
2a01:8480:2001::/48
2a01:8480:2003::/48
2a01:8480:2004::/48
2a01:8480:2008::/47
2a01:8480:200a::/47
2a11:1f40::/29

Neighbours

Upstreams (transit or peers) (26)

ASNetworkVisibility
AS1299Arelion Sweden AB3,642
AS3356Level 3 Parent, LLC2,354
AS174Cogent Communications, LLC2,163
AS5511Opentransit Orange S.A.1,120
AS6453TATA COMMUNICATIONS (AMERICA) INC825
AS6939Hurricane Electric LLC318
AS12338Euskaltel S.A.300
AS6461Zayo Bandwidth117
AS13030Init7 (Switzerland) Ltd.116
AS33891Core-Backbone GmbH97
AS25091IP-Max SA76
AS60068Datacamp Limited76
AS8218Zayo Infrastructure France SA74
AS34549meerfarbig GmbH & Co. KG51
AS5405Inter.link GmbH31
AS8220COLT Technology Services Group Limited30
AS34927iFog GmbH29
AS4455IX Reach Ltd24
AS22356Durand do Brasil Ltda23
AS60171AFR-IX TELECOM S.A.22
AS9009M247 Europe SRL17
AS43833-17
AS4230CLARO S.A.11
AS137409GSL Networks Pty LTD9
AS6204INTERKVM HOST SRL3
AS9498BHARTI Airtel Ltd.2

Downstreams (customers) (68)

ASNetworkVisibility
AS3356Level 3 Parent, LLC13,673
AS1299Arelion Sweden AB6,384
AS6453TATA COMMUNICATIONS (AMERICA) INC3,839
AS5511Opentransit Orange S.A.1,532
AS202766LYNTIA NETWORKS S.A.1,447
AS12338Euskaltel S.A.971
AS62352XFERA Moviles S.A.795
AS48427VISOVISION S.L.779
AS209923GRUPO INFORMATICA PACO SECILLA SL531
AS37508MATTEL484
AS60987-402
AS42386-361
AS207628-359
AS12521-306
AS12321-273
AS41368-268
AS212866-267
AS60203-266
AS208738-266
AS16299-263
AS198404-263
AS42666-262
AS211811-262
AS56909-253
AS206866-247
AS200387-233
AS202814-180
AS206757-177
AS199226-68
AS3352TELEFONICA DE ESPANA S.A.U.56

The 30 most visible of 68.

12 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.