AS131646 CORE WINNER CO.,LIMITED TAIWAN BRANCH

Taiwan COREWINNER-AS-TW APNIC 9 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

2,304

IPv6 /48 networks

RPKI

9 valid0 no ROA

Peers and downstreams

Holder

AS name: COREWINNER-AS-TW
Description: CORE WINNER CO.,LIMITED TAIWAN BRANCH 2F., No. 396, Sec. 1, Keelung Rd., Xinyi Dist., Taipei City 110, Taiwan (R.O.C.)
Organisation: CORE WINNER CO.,LIMITED TAIWAN BRANCH
Abuse contact: Not published
Assigned: 2011-07-20
Registered: 2021-01-19
Record last changed: 2025-11-07 01:10 UTC

103.183.126.0/24 103.225.196.0/24 150.107.60.0/24 150.107.62.0/24 36.255.192.0/24 43.224.23.0/24 43.229.155.0/24 43.252.209.0/24 49.128.203.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 75/100

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
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
pass	More than one upstream 4 upstreams seen in BGP.	10/10
pass	Working abuse contact op@corewinner.com 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 2025-11-07.	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/131646"><img src="https://ip-fd.net/badge/asn/131646/health.svg" alt="AS131646 network health on IP-FD.net"></a>

Markdown

[![AS131646 network health](https://ip-fd.net/badge/asn/131646/health.svg)](https://ip-fd.net/asn/131646)

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

Routing changes

Last 30 days

2026-10-04 12:12 UTC	Neighbour gone	AS45250	upstream
2026-10-04 12:12 UTC	New neighbour	AS140570	upstream

WHOIS

aut-num:        AS131646
as-name:        COREWINNER-AS-TW
handle:         AS131646
remarks:        CORE WINNER CO.,LIMITED TAIWAN BRANCH
remarks:        2F., No. 396, Sec. 1, Keelung Rd., Xinyi Dist.,
remarks:        Taipei City 110, Taiwan (R.O.C.)
administrative: SKY17-AP (Shih Kuan Yeh) <ysk@corewinner.com>
abuse:          IRT-CWTW-TW (IRT-CWTW-TW) <op@corewinner.com>
technical:      CYW27-AP (Chen Yi Wu) <op@corewinner.com>
registration:   2021-01-19T07:39:16Z
last changed:   2025-11-07T01:10:02Z
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/131646

const res = await fetch('https://ip-fd.net/api/v1/asn/131646', {
  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/131646', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/131646');
curl_setopt($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/131646", 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.

AS9002	RETN Limited RETN-AS
AS54994	Meteverse Limited. ML-1432-54994
AS137983	TIANFENG (HONG KONG) COMMUNICATIONS LIMITED TIANFENG-AS-AP
AS140570	Hong Kong Beecloud System Technology Services Limited HKBCS-AS-AP