AS57981 Ncn

Ukraine NCN-AS RIPE 5 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

1,536

IPv6 /48 networks

RPKI

0 valid5 no ROA

Peers and downstreams

Holder

AS name: NCN-AS
Description: Kachanovskiy Sergey Sergeevich
Organisation: Kachanovskiy Sergey Sergeevich
Registered in: Odesa, Ukraine
Abuse contact: oleg@ncn.od.ua
Assigned: 2012-03-22
Registered: 2012-03-23
Record last changed: 2025-04-07 07:42 UTC

91.215.56.0/22 91.215.58.0/24 91.215.59.0/24 91.237.114.0/23 91.237.115.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade D · 45/100

fail	Prefixes covered by valid ROAs 0 of 5 announced prefixes are RPKI valid, 5 have no ROA.	0/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact oleg@ncn.od.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
pass	Registry record maintained Last changed 2025-04-07.	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/57981"><img src="https://ip-fd.net/badge/asn/57981/health.svg" alt="AS57981 network health on IP-FD.net"></a>

Markdown

[![AS57981 network health](https://ip-fd.net/badge/asn/57981/health.svg)](https://ip-fd.net/asn/57981)

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

Routing changes

Last 30 days

2026-10-05 03:02 UTC	Neighbour gone	AS209823	peer
2026-10-05 03:02 UTC	Neighbour gone	AS199995	upstream

WHOIS

aut-num:        AS57981
as-name:        NCN-AS
org:            ORG-FKSS1-RIPE
admin-c:        KSS54-RIPE
tech-c:         KSS54-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         NCN-UA-MNT
created:        2012-03-23T15:40:03Z
last-modified:  2025-04-07T07:42:19Z
source:         RIPE
sponsoring-org: ORG-LW50-RIPE
% 12 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/57981

const res = await fetch('https://ip-fd.net/api/v1/asn/57981', {
  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/57981', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/57981');
curl_setopt($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/57981", 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))

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