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Autonomous System

AS48166 ยท FORTEX CJSC

Overview

AS48166 is announced on the Internet: RIPE RIS route collectors currently see 9 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 22,528 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 24 upstream neighbours (transit providers or peers) and 19 downstream neighbours (customers or networks it carries). Its most visible upstreams are PJSC Rostelecom (AS12389), RETN Limited (AS9002), and Arelion Sweden AB (AS1299). AS48166 was assigned by RIPE NCC, and its registration country is Russia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:42 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 91.133.0.1, the first address of 91.133.0.0/19. 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 (9 prefixes)

PrefixAddresses
5.250.232.0/212,048
89.22.16.0/204,096
91.133.0.0/198,192
91.210.84.0/221,024
178.213.192.0/212,048
185.61.92.0/221,024
185.61.92.0/23512
185.61.94.0/23512
194.9.224.0/204,096

IPv6 prefixes (1 prefix)

Prefix
2a02:7760::/32

Neighbours

Upstreams (transit or peers) (24)

ASNetworkVisibility
AS12389PJSC Rostelecom939
AS9002RETN Limited437
AS1299Arelion Sweden AB359
AS62255BiMajLink d.o.o.306
AS35598INETCOM CARRIER LLC287
AS3216PJSC "Vimpelcom"252
AS57304JSC "RetnNet"232
AS9049JSC "ER-Telecom Holding"100
AS49320Golitsyno Telecom Ltd94
AS50384iHome LLC29
AS47692Nessus GmbH21
AS50673Serverius Holding B.V.19
AS25091IP-Max SA18
AS6939Hurricane Electric LLC13
AS8218Zayo Infrastructure France SA12
AS15958CETIN Ltd. Belgrade12
AS41327Fiber Telecom S.p.A.11
AS60171AFR-IX TELECOM S.A.11
AS6204INTERKVM HOST SRL10
AS6663Euroweb Romania S.R.L.10
AS42295TBISS Ltd10
AS9198JSC Kazakhtelecom8
AS62000SERVERD SAS7
AS61049Exascale Ltd2

Downstreams (customers) (19)

ASNetworkVisibility
AS51547JOINT-STOCK COMPANY "TELEPORT TELECOM"317
AS59666FORTEX CJSC290
AS49510TCV Ltd288
AS57424Limited liability company "New Line"282
AS43993IronTelecom OU276
AS208942Firma "Zdorovye" LLC.265
AS41102ZR-Telecom plus Ltd.199
AS57818SKTV Ltd.191
AS49320Golitsyno Telecom Ltd130
AS197460Zencom LTD125
AS56493-102
AS44705-96
AS57304JSC "RetnNet"94
AS198539-89
AS8752-35
AS50760-15
AS196938-15
AS48293Uniontel Ltd5
AS211134-5

16 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.