Autonomous System
AS6661 · POST Luxembourg
Overview
AS6661 is announced on the Internet: RIPE RIS route collectors currently see 17 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 219,648 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 57 upstream neighbours (transit providers or peers) and 41 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Opentransit Orange S.A. (AS5511), and meerfarbig GmbH & Co. KG (AS34549). AS6661 was assigned by RIPE NCC, and its registration country is Luxembourg.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:12 AM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 83.99.0.1, the first address of 83.99.0.0/17. 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 (17 prefixes)
| Prefix | Addresses |
|---|---|
| 37.157.152.0/21 | 2,048 |
| 78.141.128.0/18 | 16,384 |
| 83.99.0.0/17 | 32,768 |
| 87.240.192.0/18 | 16,384 |
| 88.207.128.0/17 | 32,768 |
| 107.183.0.0/17 | 32,768 |
| 146.0.128.0/18 | 16,384 |
| 146.0.212.0/22 | 1,024 |
| 146.0.216.0/21 | 2,048 |
| 178.254.64.0/18 | 16,384 |
| 185.104.108.0/22 | 1,024 |
| 188.115.0.0/18 | 16,384 |
| 193.168.10.0/23 | 512 |
| 194.154.192.0/19 | 8,192 |
| 195.46.224.0/19 | 8,192 |
| 213.135.224.0/19 | 8,192 |
| 213.166.32.0/19 | 8,192 |
IPv6 prefixes (2 prefixes)
| Prefix |
|---|
| 2001:7e8::/32 |
| 2001:7e9::/32 |
Neighbours
Upstreams (transit or peers) (57)
| AS | Network | Visibility |
|---|---|---|
| AS6939 | Hurricane Electric LLC | 6,182 |
| AS5511 | Opentransit Orange S.A. | 345 |
| AS34549 | meerfarbig GmbH & Co. KG | 108 |
| AS13030 | Init7 (Switzerland) Ltd. | 82 |
| AS34927 | iFog GmbH | 75 |
| AS5405 | Inter.link GmbH | 74 |
| AS39351 | 31173 Services AB | 67 |
| AS8455 | atom86 BV | 66 |
| AS34177 | Celeste SAS | 64 |
| AS34019 | Hivane Association | 62 |
| AS35280 | F5 Networks SARL | 61 |
| AS50673 | - | 59 |
| AS20485 | Joint Stock Company TransTeleCom | 58 |
| AS24961 | WIIT AG | 57 |
| AS50629 | LWLcom GmbH | 48 |
| AS9002 | RETN Limited | 47 |
| AS6461 | Zayo Bandwidth | 45 |
| AS29075 | IELO-LIAZO SERVICES SAS | 45 |
| AS29632 | Netassist International EOOD | 44 |
| AS8298 | IPng Networks GmbH | 42 |
| AS14840 | BR.Digital Telecom | 42 |
| AS212024 | - | 41 |
| AS6797 | - | 38 |
| AS2497 | Internet Initiative Japan Inc. | 37 |
| AS6758 | Monaco Telecom S.A. | 37 |
| AS21320 | GEANT Vereniging | 37 |
| AS1764 | Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | 35 |
| AS33891 | Core-Backbone GmbH | 35 |
| AS37468 | Angola Cables | 33 |
| AS41327 | Fiber Telecom S.p.A. | 33 |
The 30 most visible of 57.
Downstreams (customers) (41)
| AS | Network | Visibility |
|---|---|---|
| AS206610 | Mixvoip S.A. | 793 |
| AS198095 | ebrc POST Telecom S.A. | 578 |
| AS201973 | European Court of Justice | 538 |
| AS24611 | Datacenter Luxembourg S.A. | 418 |
| AS208414 | WEDOS Internet, a.s. | 335 |
| AS213785 | Banque Internationale a Luxembourg SA | 327 |
| AS202438 | encevo Encevo S.A | 302 |
| AS211018 | Administration Communale Luxemberg | 300 |
| AS199245 | PricewaterhouseCoopers Societe cooperative | 290 |
| AS210872 | NATO SUPPORT AND PROCUREMENT AGENCY | 286 |
| AS200949 | - | 285 |
| AS209305 | - | 285 |
| AS8883 | - | 284 |
| AS44708 | - | 284 |
| AS11245 | - | 283 |
| AS200102 | - | 283 |
| AS211719 | - | 277 |
| AS214204 | - | 277 |
| AS34683 | - | 270 |
| AS60752 | - | 270 |
| AS44295 | - | 269 |
| AS20501 | - | 241 |
| AS200821 | - | 239 |
| AS47137 | - | 237 |
| AS210145 | - | 235 |
| AS57205 | - | 234 |
| AS200129 | - | 234 |
| AS203914 | - | 233 |
| AS35044 | - | 227 |
| AS43719 | Kyndryl Luxembourg Sarl | 224 |
The 30 most visible of 41.
132 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.