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Autonomous System

AS45204 ยท GEMNET LLC

Overview

AS45204 is announced on the Internet: RIPE RIS route collectors currently see 16 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 15,617 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 7 upstream neighbours (transit providers or peers) and 24 downstream neighbours (customers or networks it carries). Its most visible upstreams are NTT America, Inc. (AS2914), Cogent Communications, LLC (AS174), and PJSC Rostelecom (AS12389). AS45204 was assigned by APNIC, and its registration country is Mongolia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:51 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 180.149.64.1, the first address of 180.149.64.0/20. 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 (16 prefixes)

PrefixAddresses
180.149.64.0/204,096
180.149.80.0/212,048
180.149.90.0/24256
180.149.91.0/24256
180.149.93.0/24256
180.149.94.0/24256
180.149.95.0/24256
180.149.96.0/24256
180.149.97.0/24256
180.149.98.0/24256
180.149.99.0/24256
180.149.100.0/221,024
180.149.103.0/24256
180.149.104.0/212,048
180.149.112.0/204,096
203.26.189.158/321

IPv6 prefixes (1 prefix)

Prefix
2401:d600::/32

Neighbours

Upstreams (transit or peers) (7)

ASNetworkVisibility
AS2914NTT America, Inc.8,952
AS174Cogent Communications, LLC3,040
AS12389PJSC Rostelecom935
AS17676SoftBank Corp.134
AS2497Internet Initiative Japan Inc.87
AS60068Datacamp Limited37
AS1299Arelion Sweden AB4

Downstreams (customers) (24)

ASNetworkVisibility
AS17882UNIVISION LLC3,621
AS10109Topica LLC, Internet Service Provider,Ulaanbaatar, Mongolia998
AS56301National Data Center building765
AS56293Kewiko LLC748
AS10219Skymedia Corporation708
AS9789# AS-DATACOM-AP converted to ASN-DATACOM-AP for RPSL compliance - Datacom Co.,Ltd511
AS141681ONDO LLC508
AS134356NBC Co.,Ltd505
AS55408Univision LLC. To TTK STM1 UPSTREAM PROVIDER496
AS13335Cloudflare, Inc.353
AS38818-278
AS9934-275
AS55342-258
AS4850-257
AS24320-257
AS38869-257
AS58726-257
AS24496-256
AS45237-256
AS56038-256
AS58598-256
AS135033-256
AS137982-256
AS139579-254

4 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.