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Autonomous System

AS12897 ยท ENTEGA Medianet GmbH

Overview

AS12897 is announced on the Internet: RIPE RIS route collectors currently see 32 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 163,584 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 73 upstream neighbours (transit providers or peers) and 9 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), GTT Communications Inc. (AS3257), and Arelion Sweden AB (AS1299). AS12897 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:55 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 141.187.0.1, the first address of 141.187.0.0/16. 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 (32 prefixes)

PrefixAddresses
5.182.236.0/221,024
45.10.60.0/221,024
45.14.188.0/221,024
45.93.108.0/221,024
45.128.180.0/221,024
45.131.36.0/221,024
45.136.168.0/221,024
45.143.76.0/221,024
46.243.80.0/212,048
85.132.192.0/198,192
92.119.8.0/221,024
94.16.64.0/198,192
94.46.64.0/198,192
95.131.96.0/212,048
134.101.16.0/204,096
139.29.127.0/24256
141.187.0.0/1665,536
145.224.39.0/24256
149.249.128.0/198,192
185.9.28.0/221,024
185.101.36.0/24256
185.117.68.0/221,024
185.189.140.0/221,024
185.194.64.0/221,024
185.238.252.0/221,024
195.2.160.0/198,192
195.80.52.0/221,024
212.126.192.0/198,192
212.232.80.0/204,096
213.157.0.0/198,192
213.188.96.0/198,192
217.173.144.0/204,096

IPv6 prefixes (4 prefixes)

Prefix
2001:678:804::/48
2001:678:ca8::/48
2a02:b98::/32
2a0e:96c0::/32

Neighbours

Upstreams (transit or peers) (73)

ASNetworkVisibility
AS3356Level 3 Parent, LLC321
AS3257GTT Communications Inc.219
AS1299Arelion Sweden AB213
AS6939Hurricane Electric LLC173
AS34019Hivane Association24
AS25091IP-Max SA22
AS34549meerfarbig GmbH & Co. KG21
AS13030Init7 (Switzerland) Ltd.20
AS3320Deutsche Telekom AG19
AS3935131173 Services AB19
AS9002RETN Limited18
AS35625Eurofiber France SAS17
AS12779-16
AS20764CJSC RASCOM16
AS37497Network Platforms (PTY) LTD16
AS5405Inter.link GmbH15
AS34927iFog GmbH15
AS14840BR.Digital Telecom14
AS20485Joint Stock Company TransTeleCom14
AS61049Exascale Ltd14
AS8218-13
AS33891Core-Backbone GmbH13
AS29691-12
AS34177Celeste SAS12
AS37468Angola Cables12
AS41327Fiber Telecom S.p.A.12
AS48362Stadtwerke Feldkirch12
AS50673Serverius Holding B.V.12
AS1103-11
AS6461Zayo Bandwidth11

The 30 most visible of 73.

Downstreams (customers) (9)

ASNetworkVisibility
AS203604Soluvia IT-Services GmbH349
AS31517SkodaAuto Deutschland GmbH261
AS200657Landkreis Darmstadt-Dieburg231
AS39380Paul-Ehrlich-Institut180
AS13167Merck KGaA165
AS201339Wissenschaftsstadt Darmstadt154
AS62434DFS Deutsche Flugsicherung GmbH138
AS15550COUNT+CARE Verwaltungs GmbH128
AS35679Stadtverwaltung Offenbach113

81 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.