Autonomous System
AS31230 · Slovak University of Technology in Bratislava
Overview
RIPE RIS route collectors currently see no prefix originated by AS31230: as far as they can tell, the number is not announced on the Internet right now. In the paths the collectors record, it has 8 upstream neighbours (transit providers or peers) and 39 downstream neighbours (customers or networks it carries). Its most visible upstreams are Inter.link GmbH (AS5405), Stadtwerke Feldkirch (AS48362), and Anexia Cloud Solutions GmbH (AS47147). AS31230 was assigned by RIPE NCC, and its registration country is Slovakia.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:55 AM UTC. This page is refreshed at most every 12 hours.
Go further
No IPv4 address of this network is known right now, so there is nothing to trace to.
Announced prefixes
IPv4 prefixes (none)
None currently seen.
IPv6 prefixes (none)
None currently seen.
Neighbours
Upstreams (transit or peers) (8)
| AS | Network | Visibility |
|---|---|---|
| AS5405 | Inter.link GmbH | 353 |
| AS48362 | Stadtwerke Feldkirch | 325 |
| AS47147 | Anexia Cloud Solutions GmbH | 276 |
| AS9002 | RETN Limited | 149 |
| AS15958 | CETIN Ltd. Belgrade | 126 |
| AS50629 | LWLcom GmbH | 93 |
| AS15576 | NTS workspace AG | 76 |
| AS31543 | myNet GmbH | 1 |
Downstreams (customers) (39)
| AS | Network | Visibility |
|---|---|---|
| AS15935 | ha-vel internet s.r.o. | 425 |
| AS31117 | ENERGOTEL a.s. | 357 |
| AS25248 | RADIOKOMUNIKACE a.s. | 281 |
| AS28725 | CETIN a.s. | 170 |
| AS48326 | datanetworks DataNetworks s.r.o. | 134 |
| AS8778 | Slovanet a.s. | 115 |
| AS29405 | VNET a.s. | 100 |
| AS28952 | O2 Business Services, a.s | 82 |
| AS35328 | DSI DATA, a. s. | 79 |
| AS34820 | DELTA ONLINE spol. s r.o. | 73 |
| AS201603 | - | 61 |
| AS12905 | - | 56 |
| AS38949 | Trestel SK, a.s. | 53 |
| AS44185 | - | 48 |
| AS51013 | - | 46 |
| AS56349 | - | 45 |
| AS209531 | - | 41 |
| AS56926 | - | 30 |
| AS60533 | - | 30 |
| AS208882 | - | 30 |
| AS42005 | LightStorm Services s.r.o. | 29 |
| AS49115 | - | 25 |
| AS12508 | - | 24 |
| AS25496 | - | 23 |
| AS30929 | - | 23 |
| AS1922 | IDDQD-AS | 19 |
| AS8620 | - | 18 |
| AS56656 | - | 18 |
| AS49044 | - | 17 |
| AS57760 | - | 16 |
The 30 most visible of 39.
10 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.