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Autonomous System

AS12578 · SIA Tet

Overview

AS12578 is announced on the Internet: RIPE RIS route collectors currently see 59 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 499,968 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 87 upstream neighbours (transit providers or peers) and 97 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), Arelion Sweden AB (AS1299), and Cogent Communications, LLC (AS174). AS12578 was assigned by RIPE NCC, and its registration country is Latvia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:03 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 46.109.0.1, the first address of 46.109.0.0/16. 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 (59 prefixes)

PrefixAddresses
46.109.0.0/1665,536
62.85.0.0/1732,768
78.84.0.0/1665,536
80.232.128.0/1732,768
80.232.147.0/24256
80.232.150.0/24256
80.232.190.0/24256
80.232.195.0/24256
80.232.230.0/24256
80.232.249.0/24256
80.232.255.0/24256
81.198.0.0/1665,536
81.198.56.0/212,048
81.198.59.0/24256
81.198.95.0/24256
81.198.112.0/204,096
81.198.160.0/204,096
81.198.165.0/24256
81.198.186.0/24256
84.237.128.0/1732,768
84.237.210.0/23512
84.237.233.0/24256
84.237.246.0/24256
87.110.0.0/1665,536
87.110.192.0/1816,384
87.110.223.0/24256
87.110.226.0/24256
87.110.252.0/24256
87.246.144.0/204,096
87.246.160.0/198,192
91.105.0.0/1732,768
95.68.0.0/1732,768
185.38.56.0/221,024
194.8.16.0/212,048
194.8.24.0/221,024
195.2.96.0/198,192
195.13.128.0/1732,768
195.13.162.0/24256
195.13.200.0/24256
195.13.201.0/24256
195.13.204.0/24256
195.13.215.0/24256
195.13.225.0/24256
195.13.228.0/24256
195.13.229.0/24256
195.13.237.0/24256
195.13.245.0/24256
195.13.249.0/24256
195.13.251.0/24256
195.13.253.0/24256
195.13.254.0/24256
195.35.107.0/24256
195.114.32.0/198,192
195.122.0.0/198,192
195.122.0.0/24256
195.122.18.0/24256
195.122.26.0/23512
195.122.28.0/24256
195.122.29.0/24256

IPv6 prefixes (1 prefix)

Prefix
2a02:2330::/29

Neighbours

Upstreams (transit or peers) (87)

ASNetworkVisibility
AS3356Level 3 Parent, LLC4,707
AS1299Arelion Sweden AB3,174
AS174Cogent Communications, LLC3,149
AS6939Hurricane Electric LLC1,295
AS13030Init7 (Switzerland) Ltd.492
AS28917Fiord Networks, UAB423
AS34549meerfarbig GmbH & Co. KG391
AS35625Eurofiber France SAS302
AS34927iFog GmbH286
AS5405Inter.link GmbH284
AS25091IP-Max SA284
AS61049Exascale Ltd281
AS34177Celeste SAS277
AS14840BR.Digital Telecom275
AS50304Blix Solutions AS275
AS24115Equinix273
AS48362Stadtwerke Feldkirch269
AS37497Network Platforms (PTY) LTD263
AS29691Nine Internet Solutions AG262
AS41327Fiber Telecom S.p.A.258
AS34019Hivane Association256
AS33891Core-Backbone GmbH252
AS8298IPng Networks GmbH241
AS12779IT.Gate S.p.A.239
AS24961WIIT AG234
AS35280F5 Networks SARL234
AS8455-221
AS20485Joint Stock Company TransTeleCom220
AS8218Zayo Infrastructure France SA193
AS37468Angola Cables185

The 30 most visible of 87.

Downstreams (customers) (97)

ASNetworkVisibility
AS34073LR Izglitibas un zinatnes ministrija3,047
AS8285Versija SIA1,644
AS58269CloudHosting SIA1,545
AS8194VAS "Latvijas Valsts radio un televizijas centrs"893
AS6747SIA Tet827
AS28886RETN Limited816
AS8892UAB Skylink LT.789
AS207137PacketHub S.A.629
AS34326CSC Telecom SIA533
AS24645CSC Telecom, UAB523
AS6769Kertinis valstybes telekomunikaciju centras455
AS12509-434
AS12525-408
AS43615-373
AS210599-361
AS51349-348
AS48113-335
AS21433AccentureFSSC Accenture UK Limited334
AS41563-328
AS213934-314
AS43513-281
AS197870-280
AS12965-269
AS13244-269
AS15721-269
AS15818-269
AS20777-269
AS25444-269
AS35636-269
AS35734-269

The 30 most visible of 97.

163 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.