AS20911 Net-Surf.net Ltd.

Bulgaria NETSURF-AS-BG RIPE 177 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

36,608

IPv6 /48 networks

RPKI

177 valid0 no ROA

Peers and downstreams

Holder

AS name: NETSURF-AS-BG
Description: Net-Surf.net Ltd.
Organisation: Net-Surf.net Ltd.
Registered in: Montana, Bulgaria
Abuse contact: abuse@net-surf.net
Assigned: 2002-02-03
Registered: 2002-02-04
Record last changed: 2025-12-15 16:02 UTC

178.254.192.0/24 178.254.193.0/24 178.254.194.0/23 178.254.194.0/24 178.254.195.0/24 178.254.196.0/23 178.254.196.0/24 178.254.197.0/24 178.254.198.0/23 178.254.198.0/24 178.254.199.0/24 178.254.200.0/23 178.254.200.0/24 178.254.201.0/24 178.254.202.0/24 178.254.203.0/24 178.254.204.0/22 178.254.204.0/24 178.254.205.0/24 178.254.206.0/24 178.254.207.0/24 178.254.208.0/22 178.254.208.0/24 178.254.209.0/24 178.254.210.0/24 178.254.211.0/24 178.254.212.0/23 178.254.212.0/24 178.254.213.0/24 178.254.214.0/24 178.254.215.0/24 178.254.216.0/21 178.254.216.0/24 178.254.217.0/24 178.254.218.0/24 178.254.219.0/24 178.254.220.0/24 178.254.221.0/24 178.254.222.0/24 178.254.223.0/24 178.254.224.0/23 178.254.224.0/24 178.254.225.0/24 178.254.226.0/24 178.254.227.0/24 178.254.228.0/22 178.254.228.0/24 178.254.229.0/24 178.254.230.0/24 178.254.231.0/24 178.254.232.0/21 178.254.232.0/24 178.254.233.0/24 178.254.234.0/24 178.254.235.0/24 178.254.236.0/24 178.254.237.0/24 178.254.238.0/24 178.254.239.0/24 178.254.240.0/20 178.254.240.0/24 178.254.241.0/24 178.254.242.0/24 178.254.243.0/24 178.254.244.0/24 178.254.245.0/24 178.254.246.0/24 178.254.247.0/24 178.254.248.0/24 178.254.249.0/24 178.254.250.0/24 178.254.251.0/24 178.254.252.0/24 178.254.253.0/24 178.254.254.0/24 178.254.255.0/24 185.95.248.0/24 185.95.249.0/24 185.95.250.0/24 185.95.251.0/24 193.42.34.0/23 193.42.34.0/24 193.42.35.0/24 194.169.175.0/24 194.55.186.0/24 195.230.28.0/22 195.230.28.0/23 195.230.28.0/24 195.230.29.0/24 195.230.30.0/24 195.230.31.0/24 45.90.90.0/23 45.90.90.0/24 45.90.91.0/24 46.229.192.0/20 46.229.192.0/23 46.229.192.0/24 46.229.193.0/24 46.229.194.0/24 46.229.195.0/24 46.229.196.0/22 46.229.196.0/24 46.229.197.0/24 46.229.198.0/24 46.229.199.0/24 46.229.200.0/22 46.229.200.0/24 46.229.201.0/24 46.229.202.0/24 46.229.203.0/24 46.229.204.0/24 46.229.205.0/24 46.229.206.0/24 46.229.207.0/24 78.128.36.0/23 78.128.36.0/24 78.128.37.0/24 78.128.40.0/24 78.90.248.0/21 78.90.248.0/24 78.90.249.0/24 78.90.250.0/24 78.90.251.0/24 78.90.252.0/24 78.90.253.0/24 78.90.254.0/24 78.90.255.0/24 79.124.9.0/24 80.72.88.0/22 80.72.88.0/24 80.72.89.0/24 80.72.90.0/24 80.72.91.0/24 84.21.174.0/23 84.21.174.0/24 84.21.175.0/24 87.120.118.0/23 87.120.118.0/24 87.120.119.0/24 87.120.122.0/23 87.120.122.0/24 87.120.123.0/24 87.120.124.0/24 87.121.70.0/23 87.121.70.0/24 87.121.71.0/24 92.249.50.0/24 93.123.26.0/23 93.123.26.0/24 93.123.27.0/24 93.152.228.0/23 93.152.228.0/24 93.152.229.0/24 93.152.248.0/22 93.152.248.0/24 93.152.249.0/24 93.152.250.0/24 93.152.251.0/24 93.152.252.0/23 93.152.252.0/24 93.152.253.0/24 93.152.254.0/23 93.152.254.0/24 93.152.255.0/24 94.156.162.0/23 94.156.162.0/24 94.156.163.0/24 95.111.120.0/21 95.111.120.0/24 95.111.121.0/24 95.111.122.0/24 95.111.123.0/24 95.111.124.0/24 95.111.125.0/24 95.111.126.0/24 95.111.127.0/24 95.214.27.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 75/100

pass	Prefixes covered by valid ROAs 177 of 177 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
pass	More than one upstream 7 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@net-surf.net 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 2025-12-15.	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/20911"><img src="https://ip-fd.net/badge/asn/20911/health.svg" alt="AS20911 network health on IP-FD.net"></a>

Markdown

[![AS20911 network health](https://ip-fd.net/badge/asn/20911/health.svg)](https://ip-fd.net/asn/20911)

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

Routing changes

Last 30 days

2026-10-05 19:09 UTC	Neighbour gone	AS263152	peer
2026-10-05 19:09 UTC	Neighbour gone	AS209823	peer
2026-10-05 19:09 UTC	Neighbour gone	AS58057	upstream
2026-10-05 19:09 UTC	Neighbour gone	AS50869	upstream
2026-10-05 19:09 UTC	Neighbour gone	AS37721	peer
2026-10-05 19:09 UTC	Neighbour gone	AS25478	upstream
2026-10-05 19:09 UTC	Neighbour gone	AS1031	upstream
2026-10-05 19:09 UTC	New neighbour	AS8888	peer
2026-10-05 19:09 UTC	Relationship changed	AS9044	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS8298	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS52055	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS50673	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS401753	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS39351	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS34549	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS34019	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS3303	upstream to peer
2026-10-05 19:09 UTC	New neighbour	AS264409	peer
2026-10-05 19:09 UTC	Relationship changed	AS25091	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS20764	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS15958	upstream to peer
2026-10-05 19:09 UTC	Relationship changed	AS14840	upstream to peer

WHOIS

aut-num:        AS20911
as-name:        NETSURF-AS-BG
org:            ORG-NL136-RIPE
admin-c:        TT1484-RIPE
tech-c:         TT1484-RIPE
tech-c:         MV4491-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         NETSURF-MNTR
created:        2002-02-04T13:38:19Z
last-modified:  2025-12-15T16:02:22Z
source:         RIPE
% 23 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/20911

const res = await fetch('https://ip-fd.net/api/v1/asn/20911', {
  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/20911', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/20911');
curl_setopt($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/20911", 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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