AS205121 Oleksandr Kozlenko

Ukraine OleksandrKozlenko RIPE 0 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

IPv6 /48 networks

RPKI

1 valid0 no ROA

Peers and downstreams

Holder

AS name: OleksandrKozlenko
Description: Oleksandr Kozlenko
Organisation: Oleksandr Kozlenko
Registered in: Kyiv, Ukraine
Abuse contact: abuse@kozlenko.pp.ua
Assigned: 2022-05-11
Registered: 2022-05-12
Record last changed: 2023-08-21 16:51 UTC

None announced.

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 80/100

pass	Prefixes covered by valid ROAs 1 of 1 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
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact abuse@kozlenko.pp.ua 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
fail	Registry record maintained Last changed 2023-08-21.	0/5

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/205121"><img src="https://ip-fd.net/badge/asn/205121/health.svg" alt="AS205121 network health on IP-FD.net"></a>

Markdown

[![AS205121 network health](https://ip-fd.net/badge/asn/205121/health.svg)](https://ip-fd.net/asn/205121)

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

Routing changes

Last 30 days

2026-10-04 21:42 UTC	Neighbour gone	AS41666	peer
2026-10-04 21:42 UTC	New neighbour	AS8888	peer
2026-10-04 21:42 UTC	Relationship changed	AS8298	upstream to peer
2026-10-04 21:42 UTC	Relationship changed	AS48646	upstream to peer
2026-10-04 21:42 UTC	Relationship changed	AS401753	upstream to peer
2026-10-04 21:42 UTC	Relationship changed	AS25091	upstream to peer

WHOIS

aut-num:        AS205121
as-name:        OleksandrKozlenko
org:            ORG-OK98-RIPE
sponsoring-org: ORG-SA4302-RIPE
admin-c:        SBAC-RIPE
admin-c:        OK4370-RIPE
tech-c:         SBTC-RIPE
tech-c:         OK4370-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SBMT
mnt-by:         OLENKO-MNT
created:        2022-05-12T07:35:38Z
last-modified:  2023-08-21T16:51:32Z
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/205121

const res = await fetch('https://ip-fd.net/api/v1/asn/205121', {
  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/205121', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/205121');
curl_setopt($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/205121", 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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AS8888	xTom Pty Ltd XTOM
AS24482	SG.GS SGGS-AS-AP
AS25091	IP-Max SA IP-Max
AS34549	meerfarbig GmbH & Co. KG MEER-AS
AS34872	Sarah Rossius trading as Servperso Systems Servperso_Systems
AS42541	Fiberby ApS FIBERBY
AS48646	SDRmedia Verwaltungs GmbH STEFAN6
AS51185	MainStreaming SpA MAINSTREAMING-AS
AS56662	Eutpnet EUTPNET
AS58299	Openfactory GmbH OPENFACTORY-AS
AS210937	Showfom
AS213151	Christian Elsen CHRISELSEN
AS401753	BIXCE Inc BIXCE