Autonomous System
AS1836 · green.ch AG
Overview
AS1836 is announced on the Internet: RIPE RIS route collectors currently see 76 IPv4 prefixes and 5 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 492,032 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 60 upstream neighbours (transit providers or peers) and 734 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), Arelion Sweden AB (AS1299), and Cogent Communications, LLC (AS174). AS1836 was assigned by ARIN, and its registration country is Switzerland.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 9:48 PM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 81.221.0.1, the first address of 81.221.0.0/16. 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 (76 prefixes)
| Prefix | Addresses |
|---|---|
| 80.86.192.0/20 | 4,096 |
| 80.253.80.0/21 | 2,048 |
| 80.254.160.0/19 | 8,192 |
| 81.6.0.0/19 | 8,192 |
| 81.6.48.0/20 | 4,096 |
| 81.221.0.0/16 | 65,536 |
| 82.195.224.0/19 | 8,192 |
| 91.229.80.0/22 | 1,024 |
| 91.236.220.0/24 | 256 |
| 146.228.0.0/16 | 65,536 |
| 185.38.66.0/24 | 256 |
| 185.169.60.0/22 | 1,024 |
| 185.235.145.0/24 | 256 |
| 193.72.0.0/18 | 16,384 |
| 193.72.64.0/21 | 2,048 |
| 193.72.72.0/22 | 1,024 |
| 193.72.76.0/23 | 512 |
| 193.72.78.0/24 | 256 |
| 193.72.81.0/24 | 256 |
| 193.72.82.0/23 | 512 |
| 193.72.84.0/22 | 1,024 |
| 193.72.88.0/21 | 2,048 |
| 193.72.96.0/19 | 8,192 |
| 193.72.128.0/20 | 4,096 |
| 193.72.148.0/22 | 1,024 |
| 193.72.152.0/21 | 2,048 |
| 193.72.160.0/22 | 1,024 |
| 193.72.164.0/23 | 512 |
| 193.72.167.0/24 | 256 |
| 193.72.168.0/21 | 2,048 |
| 193.72.176.0/21 | 2,048 |
| 193.72.184.0/23 | 512 |
| 193.72.187.0/24 | 256 |
| 193.72.188.0/22 | 1,024 |
| 193.72.192.0/20 | 4,096 |
| 193.72.208.0/21 | 2,048 |
| 193.72.217.0/24 | 256 |
| 193.72.218.0/23 | 512 |
| 193.72.220.0/22 | 1,024 |
| 193.72.224.0/19 | 8,192 |
| 193.73.0.0/18 | 16,384 |
| 193.73.64.0/19 | 8,192 |
| 193.73.96.0/21 | 2,048 |
| 193.73.104.0/23 | 512 |
| 193.73.108.0/22 | 1,024 |
| 193.73.112.0/24 | 256 |
| 193.73.115.0/24 | 256 |
| 193.73.116.0/22 | 1,024 |
| 193.73.120.0/23 | 512 |
| 193.73.123.0/24 | 256 |
| 193.73.124.0/24 | 256 |
| 193.73.126.0/23 | 512 |
| 193.73.128.0/18 | 16,384 |
| 193.73.192.0/20 | 4,096 |
| 193.73.209.0/24 | 256 |
| 193.73.210.0/24 | 256 |
| 193.73.212.0/22 | 1,024 |
| 193.73.216.0/21 | 2,048 |
| 193.73.224.0/21 | 2,048 |
| 193.73.232.0/22 | 1,024 |
| 193.73.236.0/23 | 512 |
| 193.73.239.0/24 | 256 |
| 193.73.240.0/23 | 512 |
| 193.73.244.0/22 | 1,024 |
| 193.73.248.0/23 | 512 |
| 193.73.252.0/22 | 1,024 |
| 193.193.128.0/19 | 8,192 |
| 194.147.76.0/23 | 512 |
| 194.150.160.0/23 | 512 |
| 194.169.158.0/24 | 256 |
| 194.191.0.0/16 | 65,536 |
| 194.191.16.0/24 | 256 |
| 195.48.0.0/16 | 65,536 |
| 195.49.0.0/17 | 32,768 |
| 195.130.160.0/19 | 8,192 |
| 212.59.128.0/18 | 16,384 |
IPv6 prefixes (5 prefixes)
| Prefix |
|---|
| 2001:678:810::/48 |
| 2001:67c:1300::/48 |
| 2001:1b50::/29 |
| 2a01:2a8::/29 |
| 2a0a:3d00::/48 |
Neighbours
Upstreams (transit or peers) (60)
| AS | Network | Visibility |
|---|---|---|
| AS3356 | Level 3 Parent, LLC | 757 |
| AS1299 | Arelion Sweden AB | 752 |
| AS174 | Cogent Communications, LLC | 619 |
| AS6939 | Hurricane Electric LLC | 419 |
| AS5511 | Opentransit Orange S.A. | 320 |
| AS9002 | RETN Limited | 149 |
| AS34549 | meerfarbig GmbH & Co. KG | 67 |
| AS34927 | iFog GmbH | 61 |
| AS25091 | IP-Max SA | 55 |
| AS33891 | Core-Backbone GmbH | 54 |
| AS34019 | Hivane Association | 53 |
| AS14840 | BR.Digital Telecom | 45 |
| AS20764 | CJSC RASCOM | 43 |
| AS35625 | Eurofiber France SAS | 42 |
| AS47147 | Anexia Cloud Solutions GmbH | 42 |
| AS20485 | Joint Stock Company TransTeleCom | 38 |
| AS13030 | Init7 (Switzerland) Ltd. | 37 |
| AS8455 | - | 36 |
| AS5405 | Inter.link GmbH | 34 |
| AS6830 | LibertyGlobal Liberty Global Europe Holding B.V. | 34 |
| AS48362 | Stadtwerke Feldkirch | 34 |
| AS41327 | Fiber Telecom S.p.A. | 33 |
| AS4230 | CLARO S.A. | 31 |
| AS12859 | - | 31 |
| AS35280 | F5 Networks SARL | 31 |
| AS24961 | WIIT AG | 30 |
| AS39351 | 31173 Services AB | 28 |
| AS29632 | - | 27 |
| AS34177 | Celeste SAS | 27 |
| AS29075 | IELO-LIAZO SERVICES SAS | 22 |
The 30 most visible of 60.
Downstreams (customers) (734)
| AS | Network | Visibility |
|---|---|---|
| AS3356 | Level 3 Parent, LLC | 40,854 |
| AS6939 | Hurricane Electric LLC | 15,850 |
| AS1299 | Arelion Sweden AB | 12,239 |
| AS9002 | RETN Limited | 10,342 |
| AS174 | Cogent Communications, LLC | 10,188 |
| AS7195 | EDGEUNO S.A.S | 3,227 |
| AS9498 | BHARTI Airtel Ltd. | 3,225 |
| AS6830 | LibertyGlobal Liberty Global Europe Holding B.V. | 2,474 |
| AS33891 | Core-Backbone GmbH | 2,112 |
| AS5511 | Opentransit Orange S.A. | 1,995 |
| AS14840 | BR.Digital Telecom | 1,628 |
| AS8220 | COLT Technology Services Group Limited | 1,267 |
| AS4230 | CLARO S.A. | 1,244 |
| AS13335 | Cloudflare, Inc. | 1,025 |
| AS137409 | GSL Networks Pty LTD | 1,018 |
| AS32787 | Akamai Technologies, Inc. | 722 |
| AS5405 | Inter.link GmbH | 652 |
| AS20485 | Joint Stock Company TransTeleCom | 616 |
| AS58453 | China Mobile International Limited | 531 |
| AS4134 | No.31,Jin-rong Street | 529 |
| AS57463 | NetIX NetIX Communications JSC | 500 |
| AS6797 | GlobalConnect AB | 467 |
| AS7713 | PT Telekomunikasi Indonesia | 466 |
| AS58057 | Securebit AG | 423 |
| AS7049 | - | 409 |
| AS3303 | Swisscom (Schweiz) AG | 377 |
| AS23764 | CTGNet | 374 |
| AS208921 | - | 368 |
| AS214700 | - | 365 |
| AS204970 | - | 360 |
The 30 most visible of 734.
90 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.