AS131621 Taiwan Network Information Center

Taiwan TWNIC-NET-AS APNIC 3 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

768

IPv6 /48 networks

RPKI

4 valid0 no ROA

Peers and downstreams

Holder

AS name: TWNIC-NET-AS
Description: Taiwan Network Information Center 4F-2, No. 9 Sec. 2, Roosevelt Rd., Taipei, Taiwan, 100
Organisation: Taiwan Network Information Center
Abuse contact: Not published
Assigned: 2011-07-20
Registered: 2018-06-12
Record last changed: 2021-11-04 00:50 UTC

101.101.101.0/24 101.102.103.0/24 182.173.1.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 80/100

pass	Prefixes covered by valid ROAs 4 of 4 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 hostmaster@twnic.tw 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
fail	Registry record maintained Last changed 2021-11-04.	0/5

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/131621"><img src="https://ip-fd.net/badge/asn/131621/health.svg" alt="AS131621 network health on IP-FD.net"></a>

Markdown

[![AS131621 network health](https://ip-fd.net/badge/asn/131621/health.svg)](https://ip-fd.net/asn/131621)

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

Routing changes

Last 30 days

2026-10-06 13:28 UTC

Relationship changed

AS7481

upstream to peer

WHOIS

aut-num:        AS131621
as-name:        TWNIC-NET-AS
handle:         AS131621
remarks:        Taiwan Network Information Center
remarks:        4F-2, No. 9 Sec. 2, Roosevelt Rd.,
remarks:        Taipei, Taiwan, 100
technical:      NS10-AP (Nai-Wen Shui) <snw@twnic.net>
administrative: ck373-AP (ching-heng ku) <chku@twnic.net.tw>
abuse:          IRT-TWNIC-AP (IRT-TWNIC-AP) <hostmaster@twnic.tw>
registration:   2018-06-12T08:42:49Z
last changed:   2021-11-04T00:50:02Z
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/131621

const res = await fetch('https://ip-fd.net/api/v1/asn/131621', {
  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/131621', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/131621');
curl_setopt($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/131621", 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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