Skip to content

Autonomous System

AS2519 · ARTERIA Networks Corporation

Overview

AS2519 is announced on the Internet: RIPE RIS route collectors currently see 182 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,464,832 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 18 upstream neighbours (transit providers or peers) and 76 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Telstra Global (AS4637), and Cogent Communications, LLC (AS174). AS2519 was assigned by ARIN, and its registration country is Japan.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:56 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 115.179.0.1

The trace goes to 115.179.0.1, the first address of 115.179.0.0/16. 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 (182 prefixes)

PrefixAddresses
1.0.16.0/24256
1.1.64.0/198,192
1.1.96.0/24256
1.1.97.0/24256
1.1.98.0/24256
1.1.99.0/24256
1.1.100.0/24256
1.1.101.0/24256
1.1.102.0/24256
1.1.103.0/24256
1.1.104.0/24256
1.1.105.0/24256
1.1.106.0/24256
1.1.107.0/24256
1.1.108.0/24256
1.1.109.0/24256
1.1.110.0/24256
1.1.111.0/24256
1.1.112.0/24256
1.1.113.0/24256
1.1.114.0/24256
1.1.115.0/24256
1.1.116.0/24256
1.1.117.0/24256
1.1.118.0/24256
1.1.119.0/24256
1.1.120.0/24256
1.1.121.0/24256
1.1.122.0/24256
1.1.123.0/24256
1.1.124.0/24256
1.1.125.0/24256
1.1.126.0/24256
1.21.0.0/1816,384
1.21.64.0/198,192
1.21.112.0/204,096
1.21.144.0/204,096
1.21.160.0/198,192
1.21.192.0/198,192
27.96.16.0/212,048
27.96.32.0/198,192
27.121.128.0/1732,768
36.2.48.0/204,096
36.2.64.0/198,192
36.2.96.0/204,096
36.2.144.0/204,096
36.2.240.0/204,096
36.3.0.0/1816,384
36.3.64.0/204,096
36.3.96.0/198,192
36.3.128.0/198,192
36.3.224.0/198,192
45.119.204.0/221,024
61.122.74.0/24256
61.122.77.0/24256
101.50.128.0/1816,384
101.50.192.0/198,192
101.55.192.0/198,192
103.6.61.0/24256
103.15.108.0/221,024
103.15.184.0/221,024
103.23.248.0/221,024
103.37.92.0/221,024
103.240.20.0/221,024
110.50.96.0/198,192
112.109.24.0/212,048
113.52.240.0/204,096
113.212.105.0/24256
114.69.0.0/1732,768
115.179.0.0/1665,536
115.187.66.0/23512
115.187.68.0/221,024
115.187.72.0/212,048
116.91.0.0/204,096
116.91.64.0/1816,384
116.91.128.0/198,192
116.91.192.0/204,096
120.51.0.0/1816,384
120.51.64.0/198,192
120.51.128.0/198,192
120.51.192.0/1816,384
120.143.96.0/198,192
122.103.0.0/1732,768
122.103.160.0/198,192
122.103.192.0/1816,384
122.222.0.0/1732,768
122.222.144.0/204,096
122.222.160.0/198,192
122.222.192.0/1816,384
122.223.16.0/204,096
122.223.64.0/204,096
122.223.112.0/204,096
122.223.128.0/204,096
124.110.0.0/1816,384
124.110.64.0/198,192
124.110.96.0/204,096
124.110.128.0/198,192
124.110.224.0/198,192
124.241.120.0/212,048
133.32.0.0/1816,384

Showing the first 100 of 182, in address order. Complete list on RIPEstat

IPv6 prefixes (2 prefixes)

Prefix
2001:f60::/28
2001:f70::/29

Neighbours

Upstreams (transit or peers) (18)

ASNetworkVisibility
AS1299Arelion Sweden AB5,815
AS4637Telstra Global3,231
AS174Cogent Communications, LLC3,186
AS3356Level 3 Parent, LLC3,048
AS2497Internet Initiative Japan Inc.1,483
AS6939Hurricane Electric LLC1,031
AS33891Core-Backbone GmbH420
AS132132MyRepublic Ltd.103
AS9583Sify Limited100
AS137409GSL Networks Pty LTD93
AS8220COLT Technology Services Group Limited87
AS9304HGC Global Communications Limited58
AS9002RETN Limited46
AS12389PJSC Rostelecom38
AS7473Singapore Telecommunications Ltd31
AS15412Flag Telecom UK Limited25
AS2518BIGLOBE Inc.22
AS17676SoftBank Corp.2

Downstreams (customers) (76)

ASNetworkVisibility
AS7524ITEC HANKYU HANSHIN CO.,LTD.1,116
AS17506ARTERIA Networks Corporation776
AS63784Digital Agency645
AS7677Dai Nippon Printing Co., Ltd576
AS17707AS for DATAHOTEL, which is one of iDC in Japan,522
AS7506GMO Internet, Inc.508
AS10006SECOM Trust Systems Co.,Ltd.504
AS18068Dream Wave Shizuoka Co. Ltd.498
AS17686ACCELIA495
AS4694IDC Frontier Inc.486
AS131969-461
AS17961-426
AS17683-425
AS9354Community Network Center Inc.422
AS17934-422
AS131934-382
AS146986-382
AS17944-359
AS131911-359
AS18268-355
AS63782-352
AS17534-295
AS58648AT-I, Inc.272
AS23822-268
AS4677-267
AS2512-266
AS18087-266
AS7665-264
AS131161-259
AS10004-245

The 30 most visible of 76.

8 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.