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Autonomous System

AS51028 ยท Zummer LLC

Overview

AS51028 is announced on the Internet: RIPE RIS route collectors currently see 4 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 3,072 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 31 upstream neighbours (transit providers or peers) and 25 downstream neighbours (customers or networks it carries). Its most visible upstreams are Joint Stock Company TransTeleCom (AS20485), INETCOM CARRIER LLC (AS35598), and Global Network Management Inc (AS31500). AS51028 was assigned by RIPE NCC, and its registration country is Russia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 9:57 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 178.216.152.1, the first address of 178.216.152.0/21. 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 (4 prefixes)

PrefixAddresses
91.213.44.0/24256
91.239.42.0/24256
178.216.152.0/212,048
195.2.206.0/23512

IPv6 prefixes (2 prefixes)

Prefix
2a03:5a00:e::/48
2a03:5a07::/32

Neighbours

Upstreams (transit or peers) (31)

ASNetworkVisibility
AS20485Joint Stock Company TransTeleCom1,468
AS35598INETCOM CARRIER LLC836
AS31500Global Network Management Inc753
AS6939Hurricane Electric LLC476
AS12389PJSC Rostelecom224
AS28917Fiord Networks, UAB210
AS29076Citytelecom LLC188
AS25091IP-Max SA80
AS47692Nessus GmbH37
AS49434FBW NETWORKS SAS35
AS8218Zayo Infrastructure France SA30
AS41327Fiber Telecom S.p.A.27
AS42295-23
AS42521-22
AS62000SERVERD SAS22
AS15958CETIN Ltd. Belgrade20
AS60171AFR-IX TELECOM S.A.17
AS62255-16
AS24482SG.GS15
AS6663Euroweb Romania S.R.L.14
AS56655Gigahost AS14
AS9198JSC Kazakhtelecom13
AS6204INTERKVM HOST SRL12
AS3935131173 Services AB11
AS50629LWLcom GmbH6
AS33891Core-Backbone GmbH4
AS50673Serverius Holding B.V.4
AS56911Warian S.R.L.4
AS30886PP KOM i TEX2
AS215638Cilix Limited2

The 30 most visible of 31.

Downstreams (customers) (25)

ASNetworkVisibility
AS42608Yamal-Soft 2003 Ltd.502
AS44172Courier Plus Ltd.485
AS208780Andial Ltd.350
AS43908JSC Pursvyaz302
AS52015Dancer LLC291
AS20513512 bit LLC288
AS50158Connect LLC285
AS50536JSC Sigma-KTV284
AS60245Sannikov Kirill Vladimirovich189
AS41904LLC 12BIT149
AS57629-149
AS49479-148
AS42521-139
AS60873-132
AS211173-129
AS211609-105
AS203118-74
AS59559Elektronnyj Yugansk Ltd69
AS57277-66
AS50923-41
AS60067-34
AS15493-24
AS50916-15
AS31499-13
AS44847-5

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.