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Autonomous System

AS11758 ยท IRIS Networks

Overview

AS11758 is announced on the Internet: RIPE RIS route collectors currently see 5 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 4,864 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 8 upstream neighbours (transit providers or peers) and 35 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Zayo Bandwidth (AS6461), and Cogent Communications, LLC (AS174). AS11758 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:52 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 149.248.160.1, the first address of 149.248.160.0/21. 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 (5 prefixes)

PrefixAddresses
64.3.212.0/23512
66.85.43.0/24256
149.248.160.0/212,048
198.231.28.0/221,024
204.29.12.0/221,024

IPv6 prefixes (1 prefix)

Prefix
2607:f920::/32

Neighbours

Upstreams (transit or peers) (8)

ASNetworkVisibility
AS6939Hurricane Electric LLC10,498
AS6461Zayo Bandwidth2,896
AS174Cogent Communications, LLC1,737
AS137409GSL Networks Pty LTD24
AS40020Farmers Telecommunications Cooperative, Inc.9
AS26827EPB Fiber Optics2
AS40749CLARKSVILLE DEPARTMENT OF ELECTRICITY2
AS19331Twin Lakes Telephone Cooperative Corporation1

Downstreams (customers) (35)

ASNetworkVisibility
AS19331Twin Lakes Telephone Cooperative Corporation1,347
AS19215PES Energize944
AS3450University of Tennessee776
AS18934TenHats, LLC761
AS21766BEN LOMAND RURAL TELEPHONE COOPERATIVE, INC.738
AS395437Highland Communications LLC726
AS40749CLARKSVILLE DEPARTMENT OF ELECTRICITY699
AS16433NORTH CENTRAL TELEPHONE COOPERATIVE CORPORATION685
AS12261DTC Communications, Inc.684
AS63448HOLSTON ELECTRIC COOPERATIVE610
AS26809-518
AS396956-490
AS32040-482
AS27221-459
AS396052-451
AS400640-436
AS63267-432
AS36545-409
AS22792MOUNTAINET369
AS22408-294
AS393986-287
AS54512-273
AS40020Farmers Telecommunications Cooperative, Inc.267
AS395777-259
AS19153-253
AS47095-234
AS398293-191
AS398025-184
AS393872-173
AS397271-173

The 30 most visible of 35.

5 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.