AS51248 Host-Telecom.com s.r.o.

Czechia HOST-TELECOM RIPE 19 IPv4 prefixes 5 IPv6 prefixes

IPv4 addresses

13,568

IPv6 /48 networks

65,540

RPKI

23 valid1 no ROA

Peers and downstreams

Holder

AS name: HOST-TELECOM
Description: Host-Telecom.com s.r.o.
Organisation: Host-Telecom.com s.r.o.
Abuse contact: abuse@host-telecom.cz
Assigned: 2010-06-29
Registered: 2010-06-30
Record last changed: 2026-09-30 10:14 UTC

13.143.234.0/24 135.106.134.0/23 153.52.69.0/24 158.255.32.0/21 158.255.39.0/24 176.74.216.0/21 185.8.56.0/22 188.124.56.0/21 193.161.84.0/22 194.87.126.0/24 194.87.52.0/24 195.133.35.0/24 212.192.210.0/24 45.10.191.0/24 45.129.142.0/24 5.43.224.0/21 85.137.25.0/24 85.137.26.0/24 91.209.77.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 89/100

partly	Prefixes covered by valid ROAs 23 of 24 announced prefixes are RPKI valid, 1 have no ROA.	24/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 5 IPv6 prefixes.	15/15
pass	More than one upstream 7 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@host-telecom.cz is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2026-09-30.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/51248"><img src="https://ip-fd.net/badge/asn/51248/health.svg" alt="AS51248 network health on IP-FD.net"></a>

Markdown

[![AS51248 network health](https://ip-fd.net/badge/asn/51248/health.svg)](https://ip-fd.net/asn/51248)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 19:39 UTC	Neighbour gone	AS209823	peer
2026-10-04 19:39 UTC	Neighbour gone	AS44901	peer
2026-10-04 19:39 UTC	Neighbour gone	AS21215	upstream
2026-10-04 19:39 UTC	Relationship changed	AS9198	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS8218	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS6663	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS61049	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS50629	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS49434	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS4455	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS34927	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS33891	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS3223	upstream to downstream
2026-10-04 19:39 UTC	Relationship changed	AS286	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS264409	upstream to peer
2026-10-04 19:39 UTC	New neighbour	AS263444	peer
2026-10-04 19:39 UTC	New neighbour	AS21030	peer
2026-10-04 19:39 UTC	Relationship changed	AS1764	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS14840	upstream to peer
2026-10-04 19:39 UTC	New neighbour	AS137409	peer
2026-10-04 19:39 UTC	Relationship changed	AS13194	upstream to peer
2026-10-04 19:39 UTC	Relationship changed	AS1299	downstream to upstream
2026-10-04 19:39 UTC	New prefix	85.137.26.0/24
2026-10-04 19:39 UTC	New prefix	153.52.69.0/24

WHOIS

aut-num:        AS51248
as-name:        HOST-TELECOM
org:            ORG-Hs41-RIPE
remarks:        -----------------------------------------------
remarks:        --= Okay-Telecom Ltd. =--
remarks:        --= Cogent Communications =--
remarks:        --= Dial Telecom, a.s. =--
remarks:        --= NIX.CZ z.s.p.o. =--
remarks:        --= Hurricane Electric, Inc. =--
remarks:        --= ReTN.net Autonomous System =--
remarks:        --= GBXS-AS M247 Ltd =--
remarks:        --= GlobalNet LLC =--
remarks:        --= Voxility S.R.L. =--
remarks:        --= Arelion Sweden AB =--
remarks:        --= Kaora, s.r.o. =--
remarks:        --= NIX.CZ z.s.p.o. =--
remarks:        --= Facebook Corp =--
remarks:        --= Root Server Technical Operations =--
remarks:        --= SmartApe_net =--
remarks:        --= SIA Piter-IX =--
remarks:        --= GTT =--
remarks:        -----------------------------------------------
admin-c:        PC9290-RIPE
tech-c:         KR258-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         HOST-TELECOM-MNT
mnt-by:         NM35866-MNT
mnt-by:         ALSAUT-MNT
created:        2010-06-30T09:42:32Z
last-modified:  2026-09-30T10:14:41Z
source:         RIPE
% 73 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/51248

const res = await fetch('https://ip-fd.net/api/v1/asn/51248', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/51248', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/51248');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/51248", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

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