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Autonomous System

AS57277 · LLC Zero Kilometer

Overview

RIPE RIS route collectors currently see no prefix originated by AS57277: as far as they can tell, the number is not announced on the Internet right now. In the paths the collectors record, it has 19 upstream neighbours (transit providers or peers) and 12 downstream neighbours (customers or networks it carries). Its most visible upstreams are PJSC Rostelecom (AS12389), PJSC "Vimpelcom" (AS3216), and JSC "ER-Telecom Holding" (AS48858). AS57277 was assigned by RIPE NCC, and its registration country is Russia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:58 PM UTC. This page is refreshed at most every 12 hours.

Go further

No IPv4 address of this network is known right now, so there is nothing to trace to.

Announced prefixes

IPv4 prefixes (none)

None currently seen.

IPv6 prefixes (none)

None currently seen.

Neighbours

Upstreams (transit or peers) (19)

ASNetworkVisibility
AS12389PJSC Rostelecom2,174
AS3216PJSC "Vimpelcom"814
AS48858JSC "ER-Telecom Holding"263
AS51028Zummer LLC66
AS25091IP-Max SA37
AS49434FBW NETWORKS SAS30
AS3935131173 Services AB26
AS47692Nessus GmbH26
AS62000SERVERD SAS19
AS9049JSC "ER-Telecom Holding"17
AS15958CETIN Ltd. Belgrade16
AS6663Euroweb Romania S.R.L.12
AS9198JSC Kazakhtelecom12
AS42295-12
AS60171AFR-IX TELECOM S.A.11
AS6204INTERKVM HOST SRL10
AS50673Serverius Holding B.V.7
AS56911Warian S.R.L.2
AS56655Gigahost AS1

Downstreams (customers) (12)

ASNetworkVisibility
AS47909BAIKAL TELECOM LLC937
AS5547JSC Orient-Telecom577
AS48586LLC Zero Kilometer422
AS201135Dream Net Ltd316
AS21087Electronniy gorod, Ltd.287
AS42971INTERFONICA LLC287
AS57737Joint Stock Company Angarsk Electrolysis Chemical Complex287
AS59616Baikal Teleport CJSC249
AS61406Zavod RTA Ltd.232
AS58304NPF KTS Ltd.137
AS57629LLC IVI.RU16
AS211609-14

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.