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Autonomous System

AS44735 · Nova hf

Overview

AS44735 is announced on the Internet: RIPE RIS route collectors currently see 18 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 38,144 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 52 upstream neighbours (transit providers or peers) and 33 downstream neighbours (customers or networks it carries). Its most visible upstreams are Zayo Bandwidth (AS6461), Hurricane Electric LLC (AS6939), and Level 3 Parent, LLC (AS3356). AS44735 was assigned by RIPE NCC, and its registration country is Iceland.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:44 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 153.92.128.1, the first address of 153.92.128.0/19. 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 (18 prefixes)

PrefixAddresses
46.182.184.0/212,048
78.40.248.0/212,048
78.40.250.0/24256
91.220.138.0/24256
149.126.80.0/24256
149.126.81.0/24256
149.126.82.0/23512
149.126.84.0/221,024
153.92.128.0/198,192
157.97.0.0/198,192
178.19.48.0/204,096
185.40.120.0/221,024
185.111.36.0/221,024
185.152.116.0/221,024
213.181.96.0/198,192
213.181.96.0/204,096
213.181.103.0/24256
213.181.112.0/204,096

IPv6 prefixes (3 prefixes)

Prefix
2a00:9280::/32
2a01:6f00::/29
2a01:8280::/32

Neighbours

Upstreams (transit or peers) (52)

ASNetworkVisibility
AS6461Zayo Bandwidth3,139
AS6939Hurricane Electric LLC1,485
AS3356Level 3 Parent, LLC1,198
AS1299Arelion Sweden AB1,154
AS2914NTT America, Inc.890
AS214215Farice ehf246
AS34549meerfarbig GmbH & Co. KG122
AS25091IP-Max SA83
AS5405Inter.link GmbH71
AS34927iFog GmbH67
AS50304Blix Solutions AS67
AS8298IPng Networks GmbH52
AS1103SURF B.V.49
AS34177Celeste SAS49
AS37497Network Platforms (PTY) LTD49
AS48362Stadtwerke Feldkirch46
AS29075IELO-LIAZO SERVICES SAS45
AS14840BR.Digital Telecom44
AS12779IT.Gate S.p.A.42
AS3214xTom GmbH41
AS37468Angola Cables30
AS37100SEACOM Limited27
AS6797-26
AS9002RETN Limited26
AS6204INTERKVM HOST SRL25
AS15802Emirates Integrated Telecommunications Company PJSC25
AS15958CETIN Ltd. Belgrade25
AS55850Mercury NZ Limited25
AS6663Euroweb Romania S.R.L.24
AS9044BSE Software GmbH24

The 30 most visible of 52.

Downstreams (customers) (33)

ASNetworkVisibility
AS215823Spaugur ehf.889
AS47556Webtitude LTD677
AS207137PacketHub S.A.560
AS44275OpinKerfi2024 Opin Kerfi hf524
AS60259Nova hf443
AS13335Cloudflare, Inc.441
AS197403Islandsbanki hf359
AS449251984 ehf336
AS200868Kapalvaeding ehf.319
AS60690Opin Kerfi hf284
AS206669-281
AS31236-270
AS25244-269
AS59396-269
AS210080-266
AS202030-265
AS212771-263
AS14762-260
AS43525-260
AS203176-258
AS30286-257
AS35834-256
AS209214-256
AS200632-220
AS212926-215
AS214687-182
AS1850-170
AS39832-170
AS214144-159
AS24743-74

The 30 most visible of 33.

86 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.