AS203937 MAREK BZDZIUCH trading as CYFROTEL Sp. J.

Poland Cyfrotel RIPE 8 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

3,328

IPv6 /48 networks

65,536

RPKI

9 valid0 no ROA

Peers and downstreams

Holder

AS name: Cyfrotel
Description: MAREK BZDZIUCH trading as CYFROTEL Sp. J.
Organisation: MAREK BZDZIUCH trading as CYFROTEL Sp. J.
Registered in: Biłgoraj, Poland
Abuse contact: admin@cyfrotel.pl
Assigned: 2015-09-30
Registered: 2015-10-01
Record last changed: 2025-03-21 13:18 UTC

185.119.120.0/22 185.125.4.0/24 185.131.240.0/23 185.131.242.0/24 185.131.243.0/24 185.216.172.0/24 185.253.233.0/24 194.42.118.0/23

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 9 of 9 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
pass	More than one upstream 4 upstreams seen in BGP.	10/10
pass	Working abuse contact admin@cyfrotel.pl 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 2025-03-21.	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/203937"><img src="https://ip-fd.net/badge/asn/203937/health.svg" alt="AS203937 network health on IP-FD.net"></a>

Markdown

[![AS203937 network health](https://ip-fd.net/badge/asn/203937/health.svg)](https://ip-fd.net/asn/203937)

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

Routing changes

Last 30 days

2026-10-04 11:10 UTC	Relationship changed	AS62081	upstream to peer
2026-10-04 11:10 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 11:10 UTC	New neighbour	AS33891	peer
2026-10-04 11:10 UTC	Relationship changed	AS24482	upstream to peer

WHOIS

aut-num:        AS203937
as-name:        Cyfrotel
org:            ORG-CSJM2-RIPE
admin-c:        MB40321-RIPE
tech-c:         MB40321-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         pl-cyfrotel-1-mnt
created:        2015-10-01T08:31:39Z
last-modified:  2025-03-21T13:18:00Z
source:         RIPE
% 8 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/203937

const res = await fetch('https://ip-fd.net/api/v1/asn/203937', {
  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/203937', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/203937');
curl_setopt($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/203937", 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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AS6204	TMRC GROUP SRL ZET-NET
AS24482	SG.GS SGGS-AS-AP
AS28917	Fiord Networks, UAB Fiord-AS
AS33891	Core-Backbone GmbH CORE-BACKBONE
AS36236	NetActuate, Inc NETACTUATE
AS49544	i3D.net B.V i3Dnet
AS62081	Stowarzyszenie e-Poludnie EPIX-WAW-GlobalMix