AS44143 A1 Srbija d.o.o. Beograd

Serbia A1SERBIA-AS RIPE 15 IPv4 prefixes 3 IPv6 prefixes

IPv4 addresses

22,528

IPv6 /48 networks

524,288

RPKI

18 valid0 no ROA

Peers and downstreams

Holder

AS name: A1SERBIA-AS
Description: A1 Srbija d.o.o. Beograd
Organisation: A1 Srbija d.o.o. Beograd
Abuse contact: zloupotreba@a1.rs
Assigned: 2007-11-22
Registered: 2007-11-23
Record last changed: 2026-05-14 08:29 UTC

152.117.16.0/21 185.37.24.0/22 188.120.104.0/21 188.120.112.0/21 188.120.112.0/22 188.120.116.0/22 188.120.96.0/20 188.120.96.0/21 198.143.176.0/21 37.19.104.0/21 77.243.16.0/20 95.86.4.0/22 95.86.48.0/21 95.86.60.0/22 95.86.8.0/22

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 100/100

pass	Prefixes covered by valid ROAs 18 of 18 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 3 IPv6 prefixes.	15/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact zloupotreba@a1.rs is published.	15/15
pass	Publishes a geofeed A geofeed (RFC 8805) tells where the address space is used.	10/10
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 2026-05-14.	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/44143"><img src="https://ip-fd.net/badge/asn/44143/health.svg" alt="AS44143 network health on IP-FD.net"></a>

Markdown

[![AS44143 network health](https://ip-fd.net/badge/asn/44143/health.svg)](https://ip-fd.net/asn/44143)

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

Routing changes

Last 30 days

2026-10-04 12:00 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 12:00 UTC	Relationship changed	AS15958	upstream to peer
2026-10-04 12:00 UTC	Relationship changed	AS13004	upstream to peer
2026-10-04 12:00 UTC	New neighbour	AS1299	upstream
2026-10-04 12:00 UTC	New prefix	152.117.16.0/21

WHOIS

aut-num:        AS44143
as-name:        A1SERBIA-AS
org:            ORG-Td12-RIPE
admin-c:        NJ1795-RIPE
admin-c:        IP4668-RIPE
tech-c:         IP4668-RIPE
remarks:        ==================
remarks:        UPSTREAM IPv4
remarks:        ==================
remarks:        ==================
remarks:        UPSTREAM IPv6
remarks:        ==================
remarks:        =====================
remarks:        DOWNSTREAM IPv4
remarks:        =====================
remarks:        ===============================
remarks:        PRIVATE PEERINGS & IXPs IPv4
remarks:        ===============================
remarks:        ===============================
remarks:        PRIVATE PEERINGS & IXPs IPv6
remarks:        ===============================
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ROUTE-SRB
created:        2007-11-23T08:24:49Z
last-modified:  2026-05-14T08:29:28Z
source:         RIPE
% 30 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/44143

const res = await fetch('https://ip-fd.net/api/v1/asn/44143', {
  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/44143', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/44143');
curl_setopt($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/44143", 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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