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Autonomous System

AS12731 ยท IPHH Internet Port Hamburg GmbH

Overview

AS12731 is announced on the Internet: RIPE RIS route collectors currently see 11 IPv4 prefixes and 5 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 19,968 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 65 upstream neighbours (transit providers or peers) and 12 downstream neighbours (customers or networks it carries). Its most visible upstreams are Inter.link GmbH (AS5405), Core-Backbone GmbH (AS33891), and Voxility LLP (AS3223). AS12731 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:18 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 62.201.160.1, the first address of 62.201.160.0/19. 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 (11 prefixes)

PrefixAddresses
45.130.192.0/23512
62.201.160.0/198,192
62.201.171.0/24256
91.216.90.0/24256
185.8.224.0/24256
185.34.67.0/24256
185.53.220.0/221,024
192.129.45.0/24256
193.41.8.0/23512
194.113.42.0/23512
213.128.128.0/198,192

IPv6 prefixes (5 prefixes)

Prefix
2001:678:2c4::/48
2001:868::/29
2a03:4240::/32
2a0e:57c0:800::/38
2a0f:f640::/47

Neighbours

Upstreams (transit or peers) (65)

ASNetworkVisibility
AS5405Inter.link GmbH791
AS33891Core-Backbone GmbH570
AS3223Voxility LLP254
AS174Cogent Communications, LLC248
AS6939Hurricane Electric LLC221
AS3320Deutsche Telekom AG30
AS34019Hivane Association27
AS29632Netassist International EOOD25
AS34549meerfarbig GmbH & Co. KG22
AS20485Joint Stock Company TransTeleCom21
AS48362Stadtwerke Feldkirch20
AS34927iFog GmbH19
AS47147Anexia Cloud Solutions GmbH19
AS14840BR.Digital Telecom18
AS34177Celeste SAS18
AS37497Network Platforms (PTY) LTD18
AS4230CLARO S.A.17
AS24961WIIT AG17
AS8298IPng Networks GmbH16
AS3935131173 Services AB16
AS13030Init7 (Switzerland) Ltd.14
AS37468Angola Cables14
AS1103SURF B.V.13
AS35280F5 Networks SARL13
AS42708-13
AS29691-12
AS7195EDGEUNO S.A.S11
AS29075IELO-LIAZO SERVICES SAS11
AS35625Eurofiber France SAS10
AS55850Mercury NZ Limited10

The 30 most visible of 65.

Downstreams (customers) (12)

ASNetworkVisibility
AS60664x-ion GmbH505
AS60926IT-Verbund Stormarn, Anstalt des oeffentlichen Rechts350
AS5401Daniel Roesen326
AS21235ADVANCED Systemhaus GmbH322
AS50017fux fux eG321
AS209148Securepoint GmbH301
AS1898Torsten Blum276
AS13157GOPAS Solutions GmbH230
AS206813AS4830org 4830.org e. V.54
AS20144ICANN37
AS49009-15
AS25152-2

87 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.