AS41435 UnderNet LLC

Ukraine UNDERNET-AS1 RIPE 16 IPv4 prefixes 8 IPv6 prefixes

IPv4 addresses

22,016

IPv6 /48 networks

524,288

RPKI

24 valid0 no ROA

Peers and downstreams

Holder

AS name: UNDERNET-AS1
Description: UnderNet LLC
Organisation: UnderNet LLC
Registered in: Kyiv, Ukraine
Abuse contact: abuse@under.net.ua
Assigned: 2006-08-20
Registered: 2006-08-21
Record last changed: 2025-11-03 12:46 UTC

176.104.0.0/18 176.104.0.0/19 176.104.32.0/19 194.9.36.0/23 194.9.36.0/24 194.9.37.0/24 79.110.128.0/20 79.110.128.0/22 79.110.128.0/23 79.110.130.0/23 79.110.132.0/22 79.110.132.0/23 79.110.134.0/23 91.193.32.0/22 91.193.32.0/23 91.193.34.0/23

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 24 of 24 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 8 IPv6 prefixes.	15/15
pass	More than one upstream 7 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@under.net.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 2025-11-03.	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/41435"><img src="https://ip-fd.net/badge/asn/41435/health.svg" alt="AS41435 network health on IP-FD.net"></a>

Markdown

[![AS41435 network health](https://ip-fd.net/badge/asn/41435/health.svg)](https://ip-fd.net/asn/41435)

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

Routing changes

Last 30 days

2026-10-04 13:02 UTC	Neighbour gone	AS199995	upstream
2026-10-04 13:02 UTC	Neighbour gone	AS9009	upstream
2026-10-04 13:02 UTC	New neighbour	AS44901	peer
2026-10-04 13:02 UTC	New neighbour	AS34927	peer
2026-10-04 13:02 UTC	New neighbour	AS8772	peer
2026-10-04 13:02 UTC	New neighbour	AS8447	peer
2026-10-04 13:02 UTC	Relationship changed	AS7713	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS6663	upstream to peer
2026-10-04 13:02 UTC	New neighbour	AS6204	peer
2026-10-04 13:02 UTC	New neighbour	AS62000	peer
2026-10-04 13:02 UTC	Relationship changed	AS60171	upstream to peer
2026-10-04 13:02 UTC	New neighbour	AS56655	peer
2026-10-04 13:02 UTC	Relationship changed	AS49434	upstream to peer
2026-10-04 13:02 UTC	New neighbour	AS43139	upstream
2026-10-04 13:02 UTC	Relationship changed	AS42295	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS39120	upstream to peer
2026-10-04 13:02 UTC	New neighbour	AS33891	peer
2026-10-04 13:02 UTC	Relationship changed	AS264409	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS263444	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS24482	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS22356	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS15958	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS14840	upstream to peer
2026-10-04 13:02 UTC	Relationship changed	AS13194	upstream to peer

WHOIS

aut-num:        AS41435
as-name:        UNDERNET-AS1
org:            ORG-PPEV1-RIPE
remarks:        ===========================
remarks:        IPv4
remarks:        ===========================
remarks:        ===========================
remarks:        Uplinks
remarks:        ===========================
remarks:        ==========================
remarks:        Exchange
remarks:        ==========================
remarks:        ==========================
remarks:        Peers
remarks:        ==========================
remarks:        ==========================
remarks:        Customers
remarks:        ==========================
remarks:        ===========================
remarks:        IPv6
remarks:        ===========================
remarks:        ===========================
remarks:        Uplinks
remarks:        ===========================
remarks:        ==========================
remarks:        Exchange
remarks:        ==========================
remarks:        ----------------------------------------------
remarks:        Customer TE communities - Blackhole (RFC7999)
remarks:        ----------------------------------------------
remarks:        41435:666 - blackhole (discard) traffic
admin-c:        STS1-RIPE
tech-c:         STS1-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         NETUNDER-MNT
created:        2006-08-21T12:26:08Z
last-modified:  2025-11-03T12:46:42Z
source:         RIPE
sponsoring-org: ORG-LW50-RIPE
% 66 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/41435

const res = await fetch('https://ip-fd.net/api/v1/asn/41435', {
  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/41435', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/41435');
curl_setopt($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/41435", 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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