Autonomous System
AS57043 · HOSTKEY B.V.
Overview
AS57043 is announced on the Internet: RIPE RIS route collectors currently see 644 IPv4 prefixes and 7 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 164,608 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 87 upstream neighbours (transit providers or peers) and 27 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), RETN Limited (AS9002), and Cogent Communications, LLC (AS174). AS57043 was assigned by RIPE NCC, and its registration country is Netherlands.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:01 PM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 5.39.216.1, the first address of 5.39.216.0/21. 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 (644 prefixes)
| Prefix | Addresses |
|---|---|
| 2.27.86.0/24 | 256 |
| 2.27.127.0/24 | 256 |
| 2.57.242.0/24 | 256 |
| 2.57.243.0/24 | 256 |
| 5.39.216.0/21 | 2,048 |
| 5.39.216.0/24 | 256 |
| 5.39.217.0/24 | 256 |
| 5.39.218.0/24 | 256 |
| 5.39.219.0/24 | 256 |
| 5.39.220.0/24 | 256 |
| 5.39.221.0/24 | 256 |
| 5.39.222.0/24 | 256 |
| 5.39.223.0/24 | 256 |
| 5.42.199.0/24 | 256 |
| 5.102.37.0/24 | 256 |
| 5.145.176.0/24 | 256 |
| 5.180.172.0/24 | 256 |
| 5.180.173.0/24 | 256 |
| 5.188.232.0/24 | 256 |
| 5.253.63.0/24 | 256 |
| 9.247.30.0/24 | 256 |
| 9.247.46.0/24 | 256 |
| 31.57.44.0/24 | 256 |
| 31.57.45.0/24 | 256 |
| 31.57.143.0/24 | 256 |
| 31.57.166.0/24 | 256 |
| 31.57.170.0/24 | 256 |
| 31.207.44.0/22 | 1,024 |
| 31.207.44.0/24 | 256 |
| 31.207.45.0/24 | 256 |
| 31.207.46.0/24 | 256 |
| 31.207.47.0/24 | 256 |
| 43.245.224.0/22 | 1,024 |
| 43.245.224.0/24 | 256 |
| 43.245.225.0/24 | 256 |
| 43.245.226.0/24 | 256 |
| 43.245.227.0/24 | 256 |
| 45.12.34.0/24 | 256 |
| 45.12.35.0/24 | 256 |
| 45.12.255.0/24 | 256 |
| 45.67.202.0/24 | 256 |
| 45.83.120.0/24 | 256 |
| 45.83.121.0/24 | 256 |
| 45.83.122.0/23 | 512 |
| 45.87.184.0/24 | 256 |
| 45.88.1.0/24 | 256 |
| 45.88.2.0/24 | 256 |
| 45.88.15.0/24 | 256 |
| 45.129.78.0/24 | 256 |
| 45.134.184.0/24 | 256 |
| 45.134.217.0/24 | 256 |
| 45.134.218.0/24 | 256 |
| 45.135.182.0/24 | 256 |
| 45.142.2.0/24 | 256 |
| 45.150.111.0/24 | 256 |
| 45.152.22.0/24 | 256 |
| 45.155.102.0/24 | 256 |
| 45.155.103.0/24 | 256 |
| 45.159.181.0/24 | 256 |
| 45.197.133.0/24 | 256 |
| 46.8.41.0/24 | 256 |
| 46.8.186.0/23 | 512 |
| 46.17.96.0/21 | 2,048 |
| 46.17.96.0/24 | 256 |
| 46.17.97.0/24 | 256 |
| 46.17.98.0/24 | 256 |
| 46.17.99.0/24 | 256 |
| 46.17.100.0/24 | 256 |
| 46.17.101.0/24 | 256 |
| 46.17.102.0/24 | 256 |
| 46.17.103.0/24 | 256 |
| 46.161.40.0/24 | 256 |
| 46.249.109.0/24 | 256 |
| 51.146.8.0/24 | 256 |
| 62.76.236.0/24 | 256 |
| 62.76.237.0/24 | 256 |
| 62.132.3.0/24 | 256 |
| 64.137.109.0/24 | 256 |
| 64.255.25.0/24 | 256 |
| 66.151.32.0/24 | 256 |
| 66.151.33.0/24 | 256 |
| 66.151.34.0/24 | 256 |
| 66.151.35.0/24 | 256 |
| 66.151.40.0/24 | 256 |
| 66.151.41.0/24 | 256 |
| 66.151.42.0/24 | 256 |
| 66.151.43.0/24 | 256 |
| 66.248.204.0/22 | 1,024 |
| 66.248.204.0/24 | 256 |
| 66.248.205.0/24 | 256 |
| 66.248.206.0/24 | 256 |
| 66.248.207.0/24 | 256 |
| 67.203.37.0/24 | 256 |
| 72.35.242.0/24 | 256 |
| 77.67.23.0/24 | 256 |
| 77.67.89.0/24 | 256 |
| 77.83.85.0/24 | 256 |
| 77.83.86.0/24 | 256 |
| 77.83.87.0/24 | 256 |
| 78.17.2.0/24 | 256 |
Showing the first 100 of 644, in address order. Complete list on RIPEstat
IPv6 prefixes (7 prefixes)
| Prefix |
|---|
| 2a05:b40::/32 |
| 2a05:b41:100::/40 |
| 2a05:b42::/32 |
| 2a0c:b641:330::/44 |
| 2a0e:e6c0:8000::/44 |
| 2a0f:e7c4:10::/48 |
| 2a11:3500::/29 |
Neighbours
Upstreams (transit or peers) (87)
| AS | Network | Visibility |
|---|---|---|
| AS6939 | Hurricane Electric LLC | 3,493 |
| AS9002 | RETN Limited | 2,887 |
| AS174 | Cogent Communications, LLC | 2,839 |
| AS3257 | GTT Communications Inc. | 1,766 |
| AS59692 | IQWeb FZ-LLC | 575 |
| AS49434 | FBW NETWORKS SAS | 503 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | 501 |
| AS6677 | Mila hf | 274 |
| AS5405 | Inter.link GmbH | 165 |
| AS3356 | Level 3 Parent, LLC | 147 |
| AS12735 | ASTurkNet TurkNet Iletisim Hizmetleri A.S. | 131 |
| AS25091 | IP-Max SA | 95 |
| AS31500 | Global Network Management Inc | 87 |
| AS50629 | LWLcom GmbH | 59 |
| AS39351 | 31173 Services AB | 54 |
| AS34019 | Hivane Association | 51 |
| AS8298 | IPng Networks GmbH | 46 |
| AS34927 | iFog GmbH | 42 |
| AS57724 | DDOS-GUARD LTD | 42 |
| AS50304 | Blix Solutions AS | 38 |
| AS16302 | - | 37 |
| AS20764 | CJSC RASCOM | 37 |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC | 29 |
| AS1103 | SURF B.V. | 28 |
| AS61049 | Exascale Ltd | 28 |
| AS56911 | Warian S.R.L. | 27 |
| AS3214 | xTom GmbH | 25 |
| AS14840 | BR.Digital Telecom | 24 |
| AS24961 | WIIT AG | 23 |
| AS286 | GTT Communications Inc. | 22 |
The 30 most visible of 87.
Downstreams (customers) (27)
| AS | Network | Visibility |
|---|---|---|
| AS48729 | ServerKing B.V. | 2,655 |
| AS26383 | Baxet Group Inc. | 1,367 |
| AS207461 | HOSTING INDUSTRY LIMITED | 1,044 |
| AS198178 | 365.partners INC | 704 |
| AS211673 | Mynymbox Mynymbox Hosting LLC | 693 |
| AS216154 | CLODO CLOUD SERVICE CO. L.L.C | 689 |
| AS200313 | IT WEB LTD | 560 |
| AS212706 | LIVI HOSTING LTD | 471 |
| AS25534 | 10G.KZ LLC | 458 |
| AS59965 | Astralus GmbH | 428 |
| AS142554 | - | 290 |
| AS218757 | - | 283 |
| AS49227 | - | 280 |
| AS200394 | - | 276 |
| AS152179 | GLOBAL COMMUNICATION NETWORK LIMITED | 260 |
| AS205380 | - | 254 |
| AS213459 | - | 254 |
| AS6939 | Hurricane Electric LLC | 217 |
| AS57511 | - | 131 |
| AS59692 | IQWeb FZ-LLC | 48 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | 35 |
| AS216139 | Iron Hosting Centre LTD | 33 |
| AS214087 | EXO TECHNOLOGIES spol. s r.o. | 28 |
| AS56630 | - | 17 |
| AS50263 | A-Systems Sp. z o.o. | 10 |
| AS174 | Cogent Communications, LLC | 9 |
| AS9002 | RETN Limited | 9 |
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.