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Autonomous System

AS719 · Elisa Oyj

Overview

AS719 is announced on the Internet: RIPE RIS route collectors currently see 154 IPv4 prefixes and 5 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 3,677,952 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 2 upstream neighbours (transit providers or peers) and 56 downstream neighbours (customers or networks it carries). Its most visible upstreams are Elisa Oyj (AS6667) and British Telecommunications Limited (AS5400). AS719 was assigned by ARIN, and its registration country is Finland.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:48 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 91.152.0.1, the first address of 91.152.0.0/13. 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 (154 prefixes)

PrefixAddresses
31.7.16.0/204,096
31.132.12.0/24256
46.182.112.0/212,048
62.142.0.0/1665,536
62.148.192.0/198,192
62.216.96.0/198,192
62.240.64.0/198,192
62.248.128.0/1732,768
77.109.192.0/1816,384
80.81.160.0/198,192
80.88.176.0/204,096
80.186.0.0/1665,536
80.248.96.0/198,192
81.197.0.0/1665,536
81.209.0.0/1732,768
82.103.192.0/1816,384
82.118.192.0/198,192
82.141.64.0/1816,384
82.215.192.0/1816,384
83.245.128.0/1732,768
84.230.0.0/15131,072
85.76.0.0/14262,144
85.156.0.0/1665,536
85.157.0.0/1665,536
85.217.0.0/1732,768
88.112.0.0/14262,144
91.152.0.0/13524,288
91.194.20.0/23512
91.199.148.0/24256
91.202.112.0/221,024
91.235.215.0/24256
94.22.0.0/1665,536
109.232.80.0/212,048
109.234.240.0/212,048
131.207.133.0/24256
131.207.134.0/24256
131.207.168.0/24256
131.207.174.0/24256
131.207.175.0/24256
131.207.176.0/24256
131.207.199.0/24256
131.207.213.0/24256
131.207.225.0/24256
131.207.230.0/24256
131.207.242.0/24256
131.207.243.0/24256
131.207.248.0/212,048
139.97.0.0/1665,536
141.127.0.0/1665,536
157.144.0.0/1732,768
157.144.128.0/204,096
157.144.152.0/212,048
157.144.160.0/198,192
157.144.192.0/1816,384
158.127.152.0/221,024
158.233.0.0/23512
158.233.2.0/23512
185.205.0.0/221,024
192.26.119.0/24256
192.49.8.0/24256
192.49.32.0/24256
192.49.69.0/24256
192.49.171.0/24256
192.49.172.0/24256
192.58.30.0/23512
192.58.49.0/24256
192.77.120.0/221,024
192.81.184.0/24256
192.102.36.0/24256
192.102.37.0/24256
192.102.38.0/24256
192.102.39.0/24256
192.102.40.0/24256
192.102.41.0/24256
192.102.42.0/24256
192.102.49.0/24256
192.102.50.0/24256
192.103.87.0/24256
192.103.90.0/24256
192.121.144.0/24256
192.126.1.0/24256
192.126.23.0/24256
192.126.24.0/24256
192.126.35.0/24256
192.126.44.0/24256
192.126.46.0/24256
192.133.110.0/23512
192.163.32.0/198,192
192.163.64.0/1816,384
192.163.128.0/198,192
193.64.0.0/15131,072
193.66.0.0/1665,536
193.94.0.0/1665,536
193.110.110.0/24256
193.110.111.0/24256
193.142.64.0/198,192
193.142.96.0/24256
193.142.99.0/24256
193.142.101.0/24256
193.142.102.0/24256

Showing the first 100 of 154, in address order. Complete list on RIPEstat

IPv6 prefixes (5 prefixes)

Prefix
2001:671:1::/48
2001:998::/29
2001:9f0::/29
2001:1658::/29
2a00:1dd0::/29

Neighbours

Upstreams (transit or peers) (2)

ASNetworkVisibility
AS6667Elisa Oyj12,367
AS5400British Telecommunications Limited2

Downstreams (customers) (56)

ASNetworkVisibility
AS207003Web1 Oy795
AS51691F-Solutions Oy570
AS1780Valmet Oyj522
AS8145Trans-Atlantic Communications487
AS41993Cloud Center Finland Oy400
AS209457Etela-Pohjanmaan Hyvinvointialue362
AS212881Jehovan Todistajat357
AS198443Advania Finland Oy346
AS206520HUB logistics Finland Oy343
AS58003Planeetta Internet Oy333
AS57664-319
AS41701-306
AS28883-295
AS33801-262
AS207041-262
AS34541-261
AS197930-261
AS5420Kemira Oyj259
AS215776-258
AS62357-257
AS4878-256
AS30754-256
AS197115-256
AS200444-256
AS23154-254
AS200905-254
AS52170-253
AS207282-226
AS49189-221
AS57692Kapsi Internet-kayttajat ry217

The 30 most visible of 56.

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.