AS139903 RETN Telecoms Ltd.

Taiwan RETN-AS-AP APNIC 1 IPv4 prefix 1 IPv6 prefix

IPv4 addresses

512

IPv6 /48 networks

RPKI

2 valid0 no ROA

Peers and downstreams

Holder

AS name: RETN-AS-AP
Description: RETN Telecoms Ltd.
Organisation: RETN Telecoms Ltd.
Abuse contact: Not published
Assigned: 2019-12-22
Registered: 2019-12-23
Record last changed: 2025-08-26 16:48 UTC

103.146.250.0/23

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 95/100

pass	Prefixes covered by valid ROAs 2 of 2 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@retn.net 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 2025-08-26.	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/139903"><img src="https://ip-fd.net/badge/asn/139903/health.svg" alt="AS139903 network health on IP-FD.net"></a>

Markdown

[![AS139903 network health](https://ip-fd.net/badge/asn/139903/health.svg)](https://ip-fd.net/asn/139903)

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

Routing changes

Last 30 days

No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS139903
as-name:        RETN-AS-AP
handle:         AS139903
remarks:        RETN Telecoms Ltd.
abuse:          IRT-RETN-TW (IRT-RETN-TW) <abuse@retn.net>
technical,administrative:RTLA4-AP (RETN Telecoms Ltd administrator) <abuse@retn.net>
registrant:     ORG-RTL4-AP (RETN Telecoms Ltd.) <noc@retn.net>
registration:   2019-12-23T00:33:33Z
last changed:   2025-08-26T16:48:03Z
source:         APNIC (RDAP)

Routing data

Updated just now

Registry record

Fetched just now from APNIC RDAP

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/139903

const res = await fetch('https://ip-fd.net/api/v1/asn/139903', {
  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/139903', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/139903');
curl_setopt($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/139903", 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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