AS7539 National Center for High-performance Computing

Taiwan TWAREN-TW APNIC 8 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

84,992

IPv6 /48 networks

65,536

RPKI

9 valid0 no ROA

Peers and downstreams

Holder

AS name: TWAREN-TW
Description: National Center for High-performance Computing HsinChu Taiwan 300
Organisation: National Center for High-performance Computing
Abuse contact: Not published
Assigned: 1997-03-21
Registered: 2008-09-04
Record last changed: 2025-11-06 09:06 UTC

103.124.72.0/22 140.110.0.0/16 140.110.200.0/21 140.110.215.0/24 203.145.200.0/21 203.145.208.0/20 211.73.64.0/19 211.79.48.0/20

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 9 of 9 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
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@twaren.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 2025-11-06.	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/7539"><img src="https://ip-fd.net/badge/asn/7539/health.svg" alt="AS7539 network health on IP-FD.net"></a>

Markdown

[![AS7539 network health](https://ip-fd.net/badge/asn/7539/health.svg)](https://ip-fd.net/asn/7539)

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

Routing changes

Last 30 days

2026-10-05 02:55 UTC	Relationship changed	AS7713	upstream to peer
2026-10-05 02:55 UTC	Relationship changed	AS7575	upstream to peer
2026-10-05 02:55 UTC	Relationship changed	AS293	upstream to peer
2026-10-05 02:55 UTC	Relationship changed	AS18041	upstream to peer
2026-10-05 02:55 UTC	Relationship changed	AS11537	upstream to peer
2026-10-05 02:55 UTC	Relationship changed	AS1103	upstream to peer
2026-10-05 02:55 UTC	Relationship changed	AS10764	upstream to peer

WHOIS

aut-num:        AS7539
as-name:        TWAREN-TW
handle:         AS7539
remarks:        National Center for High-performance Computing
remarks:        HsinChu Taiwan 300
abuse:          IRT-NCHC-TW (IRT-NCHC-TW) <abuse@twaren.net>
technical,administrative:nNA6-AP (nchc Network Administrator) <noc@twaren.net>
registration:   2008-09-04T06:40:30Z
last changed:   2025-11-06T09:06:40Z
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/7539

const res = await fetch('https://ip-fd.net/api/v1/asn/7539', {
  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/7539', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/7539');
curl_setopt($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/7539", 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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AS1659	Taiwan Academic Network (TANet) Information Center ERX-TANET-ASN1
AS6939	Hurricane Electric LLC HURRICANE
AS9264	Net ASNet
AS17408	AboveNet Communications Taiwan ABOVE-AS-AP
AS17711	National Dong Hwa University NDHU-TW
AS17716	National Taiwan University NTU-TW
AS17717	Ministry of Education Computer Center Taipei, Taiwan MOECC-IPV6
AS18047	National Tsing-Hua University NTHU-TW
AS18181	NHRINet
AS18183	National Center for Research on Earthquake Engineering NCREE
AS18420	National Central University NCU-TW
AS18422	Industrial Technology Research Institute ITRINET-AS-TW
AS18426	Stpi-As-Tw STPI-AS-TW
AS38254	Internet Technology Laboratory ITLAB-AS-AP

AS293	Esnet ESNET
AS1103	SURF B.V. SURFNET-NL
AS7575	Australian Academic and Research Network (AARNet) AARNET-AS-AP
AS7713	PT Telekomunikasi Indonesia telkomnet-as-ap
AS9264	Net ASNet
AS10764	University of Illinois STARTAP
AS11537	Internet2 INTERNET2-RESEARCH-EDU
AS18041	Taiwan Digital Streaming Co. TWDS-AS-TW
AS24482	SG.GS SGGS-AS-AP
AS38254	Internet Technology Laboratory ITLAB-AS-AP
AS134823	Sky Digital Co., Ltd. SDCL-AS-AP