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Autonomous System

AS21412 ยท UAB "Cgates"

Overview

AS21412 is announced on the Internet: RIPE RIS route collectors currently see 32 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 159,744 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 32 upstream neighbours (transit providers or peers) and 1 downstream neighbour (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Arelion Sweden AB (AS1299), and Level 3 Parent, LLC (AS3356). AS21412 was assigned by RIPE NCC, and its registration country is Lithuania.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 8:08 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 87.247.64.1, the first address of 87.247.64.0/18. 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 (32 prefixes)

PrefixAddresses
5.20.0.0/204,096
5.20.16.0/204,096
5.20.32.0/198,192
5.20.64.0/198,192
5.20.96.0/212,048
5.20.104.0/212,048
5.20.112.0/212,048
5.20.120.0/212,048
5.20.128.0/198,192
5.20.160.0/198,192
5.20.192.0/198,192
5.20.224.0/212,048
5.20.232.0/212,048
5.20.240.0/204,096
37.157.144.0/212,048
46.251.32.0/198,192
77.87.8.0/212,048
77.221.64.0/198,192
79.133.224.0/198,192
80.240.0.0/204,096
81.29.16.0/204,096
87.239.112.0/212,048
87.247.64.0/1816,384
91.187.160.0/198,192
178.16.32.0/204,096
178.250.32.0/212,048
185.26.132.0/221,024
185.198.32.0/221,024
212.52.32.0/198,192
212.117.0.0/198,192
217.17.80.0/204,096
217.77.24.0/212,048

IPv6 prefixes (4 prefixes)

Prefix
2a00:7600::/32
2a01:a1c0::/32
2a04:ce00::/29
2a04:eb00::/29

Neighbours

Upstreams (transit or peers) (32)

ASNetworkVisibility
AS6939Hurricane Electric LLC76,374
AS1299Arelion Sweden AB32,241
AS3356Level 3 Parent, LLC10,997
AS174Cogent Communications, LLC6,436
AS9002RETN Limited4,657
AS13194UAB "Bite Lietuva"3,625
AS4230CLARO S.A.1,206
AS5405Inter.link GmbH545
AS6797GlobalConnect AB495
AS7713PT Telekomunikasi Indonesia451
AS3303Swisscom (Schweiz) AG357
AS37100SEACOM Limited342
AS8455atom86 BV247
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH151
AS8764Telia Lietuva, AB106
AS34927iFog GmbH81
AS4455IX Reach Ltd65
AS35625-65
AS1257Tele2 Sverige AB43
AS3935131173 Services AB29
AS15958CETIN Ltd. Belgrade25
AS34177Celeste SAS23
AS34549meerfarbig GmbH & Co. KG22
AS60171AFR-IX TELECOM S.A.22
AS48362Stadtwerke Feldkirch13
AS37468Angola Cables5
AS12577MMC GmbH4
AS24889-3
AS34019Hivane Association3
AS212024-2

The 30 most visible of 32.

Downstreams (customers) (1)

ASNetworkVisibility
AS12654Reseaux IP Europeens Network Coordination Centre (RIPE NCC)63

785 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.