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Autonomous System

AS33991 ยท IGRA-SERVICE LLC

Overview

AS33991 is announced on the Internet: RIPE RIS route collectors currently see 28 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 20,992 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 24 upstream neighbours (transit providers or peers) and 9 downstream neighbours (customers or networks it carries). Its most visible upstreams are PJSC Rostelecom (AS12389), Joint Stock Company TransTeleCom (AS20485), and PJSC "Vimpelcom" (AS3216). AS33991 was assigned by RIPE NCC, and its registration country is Russia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:03 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 84.22.136.1, the first address of 84.22.136.0/21. 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 (28 prefixes)

PrefixAddresses
5.253.144.0/221,024
45.143.164.0/23512
45.147.120.0/221,024
82.146.16.0/221,024
84.22.136.0/212,048
84.22.144.0/221,024
84.22.152.0/212,048
89.22.166.0/23512
89.22.174.0/23512
89.22.177.0/24256
89.31.104.0/221,024
89.31.108.0/221,024
91.132.20.0/221,024
91.200.85.0/24256
91.220.87.0/24256
91.222.216.0/221,024
146.19.253.0/24256
171.33.244.0/221,024
176.118.32.0/24256
178.159.92.0/24256
185.50.4.0/23512
185.50.6.0/24256
185.81.180.0/221,024
185.124.164.0/221,024
188.0.28.0/221,024
194.28.194.0/24256
195.191.231.0/24256
195.211.167.0/24256

IPv6 prefixes (1 prefix)

Prefix
2a00:b940::/32

Neighbours

Upstreams (transit or peers) (24)

ASNetworkVisibility
AS12389PJSC Rostelecom1,919
AS20485Joint Stock Company TransTeleCom1,442
AS3216PJSC "Vimpelcom"632
AS48858JSC "ER-Telecom Holding"508
AS8359MTS PJSC375
AS31133PJSC MegaFon267
AS9049JSC "ER-Telecom Holding"125
AS6939Hurricane Electric LLC18
AS8218Zayo Infrastructure France SA6
AS3935131173 Services AB2
AS41327Fiber Telecom S.p.A.2
AS42295TBISS Ltd2
AS47692Nessus GmbH2
AS49434FBW NETWORKS SAS2
AS50673Serverius Holding B.V.2
AS56911-2
AS62000SERVERD SAS2
AS6204INTERKVM HOST SRL1
AS6663Euroweb Romania S.R.L.1
AS8447A1 Telekom Austria AG1
AS9198JSC Kazakhtelecom1
AS15958CETIN Ltd. Belgrade1
AS56655Gigahost AS1
AS60171-1

Downstreams (customers) (9)

ASNetworkVisibility
AS209372WS Telecom Inc1,062
AS43238Optizon Ltd905
AS8496Optizon Ltd554
AS209687kvant2 IGRA-SERVICE LLC407
AS57261YarTV Ltd.348
AS207978FITS KNTS SO RAN290
AS30920Mobilon Telecommunications LLC156
AS563269-ka.ru Ltd.134
AS41831PRAVOVED LLC12

14 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.