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Autonomous System

AS400587 ยท Ryamer, LLC

Overview

AS400587 is announced on the Internet: RIPE RIS route collectors currently see 6 IPv4 prefixes and 8 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,536 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 39 upstream neighbours (transit providers or peers) and 24 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Zayo Bandwidth (AS6461), and Arelion Sweden AB (AS1299). AS400587 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:13 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 23.145.40.1, the first address of 23.145.40.0/24. 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 (6 prefixes)

PrefixAddresses
23.145.40.0/24256
68.67.118.0/24256
85.155.231.0/24256
109.205.192.0/24256
121.127.34.0/24256
192.197.201.0/24256

IPv6 prefixes (8 prefixes)

Prefix
2602:fb95::/40
2602:fb95:100::/40
2602:fb95:200::/40
2602:fb95:300::/40
2602:fb95:400::/40
2a07:e04::/36
2a07:e05::/36
2a07:e06::/36

Neighbours

Upstreams (transit or peers) (39)

ASNetworkVisibility
AS6939Hurricane Electric LLC3,511
AS6461Zayo Bandwidth2,880
AS1299Arelion Sweden AB987
AS210083Privex Privex Inc.329
AS835GoCodeIT Inc168
AS1828Unitas Global150
AS35133Eranium B.V.118
AS10111Zeofast Network14
AS50304Blix Solutions AS10
AS24482SG.GS9
AS8298IPng Networks GmbH8
AS3935131173 Services AB8
AS5405Inter.link GmbH7
AS13786Seabras 1 USA, LLC5
AS25091IP-Max SA5
AS50629LWLcom GmbH5
AS9002RETN Limited4
AS12859BIT BV4
AS20764CJSC RASCOM4
AS37468Angola Cables4
AS58057-4
AS61049Exascale Ltd4
AS24961WIIT AG3
AS56584-3
AS6696-2
AS14840-2
AS20473The Constant Company, LLC2
AS43727-2
AS137409GSL Networks Pty LTD2
AS209090-2

The 30 most visible of 39.

Downstreams (customers) (24)

ASNetworkVisibility
AS6461Zayo Bandwidth50,585
AS6939Hurricane Electric LLC36,871
AS52025ParadoxNetworks Limited1,999
AS400212VergeTel Group LLC1,645
AS395915Edge Network Services LLC690
AS44570Xodo Technology, LLC.531
AS54148Dynamic Quantum Networks481
AS401903Crimson Pacific Networks, LLC281
AS210083Privex Privex Inc.260
AS204969John Burke258
AS198804-251
AS400930-141
AS214022-140
AS63129-131
AS395887-127
AS924-66
AS56414-41
AS199518-32
AS25957-23
AS64273-23
AS215248-16
AS835GoCodeIT Inc5
AS36236NetActuate, Inc3
AS893-2

33 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.