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Autonomous System

AS12958 ยท T2 Mobile LLC

Overview

AS12958 is announced on the Internet: RIPE RIS route collectors currently see 22 IPv4 prefixes and no IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 57,088 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 24 upstream neighbours (transit providers or peers) and 1 downstream neighbour (customers or networks it carries). Its most visible upstreams are PJSC Rostelecom (AS12389), PJSC "Vimpelcom" (AS3216), and Hurricane Electric LLC (AS6939). AS12958 was assigned by RIPE NCC, and its registration country is Russia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 10:18 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 92.36.0.1, the first address of 92.36.0.0/17. 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 (22 prefixes)

PrefixAddresses
46.237.40.0/221,024
89.249.144.0/204,096
92.36.0.0/1732,768
92.36.0.0/1816,384
92.36.64.0/1816,384
109.161.56.0/24256
176.59.32.0/198,192
176.59.32.0/221,024
176.59.36.0/221,024
176.59.40.0/221,024
176.59.44.0/221,024
176.59.48.0/221,024
176.59.52.0/221,024
176.59.160.0/198,192
176.59.160.0/221,024
176.59.164.0/221,024
176.59.168.0/221,024
176.59.172.0/221,024
185.4.144.0/221,024
185.132.20.0/221,024
217.15.137.0/24256
217.15.156.0/24256

IPv6 prefixes (none)

None currently seen.

Neighbours

Upstreams (transit or peers) (24)

ASNetworkVisibility
AS12389PJSC Rostelecom245
AS3216PJSC "Vimpelcom"94
AS6939Hurricane Electric LLC32
AS25091IP-Max SA12
AS50629LWLcom GmbH8
AS8218Zayo Infrastructure France SA6
AS33891Core-Backbone GmbH5
AS9049JSC "ER-Telecom Holding"4
AS3935131173 Services AB4
AS47692Nessus GmbH4
AS49434FBW NETWORKS SAS4
AS62000SERVERD SAS4
AS41327Fiber Telecom S.p.A.3
AS42295TBISS Ltd3
AS50673Serverius Holding B.V.3
AS56911-3
AS200612GulfBridgeInternational Gulf Bridge International Inc.3
AS6204INTERKVM HOST SRL2
AS6663Euroweb Romania S.R.L.2
AS9198JSC Kazakhtelecom2
AS15958CETIN Ltd. Belgrade2
AS60171AFR-IX TELECOM S.A.2
AS215638-2
AS56655Gigahost AS1

Downstreams (customers) (1)

ASNetworkVisibility
AS34287T2 Mobile LLC97

13 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.