AS131591 Ambit Microsystem Corporation

Taiwan AMBIT-AS-TW APNIC 33 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

127,488

IPv6 /48 networks

4,096

RPKI

34 valid0 no ROA

Peers and downstreams

Holder

AS name: AMBIT-AS-TW
Description: Ambit Microsystem Corporation No. 32, Jihu Rd., Neihu Dist., Taipei 11492, Taiwan, R.O.C. Taipei Taiwan 114
Organisation: Ambit Microsystem Corporation
Abuse contact: Not published
Assigned: 2011-07-20
Registered: 2015-05-06
Record last changed: 2025-11-06 09:30 UTC

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 85/100

pass	Prefixes covered by valid ROAs 34 of 34 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 davidlin1@fareastone.com.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
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/131591"><img src="https://ip-fd.net/badge/asn/131591/health.svg" alt="AS131591 network health on IP-FD.net"></a>

Markdown

[![AS131591 network health](https://ip-fd.net/badge/asn/131591/health.svg)](https://ip-fd.net/asn/131591)

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

Routing changes

Last 30 days

2026-10-04 15:45 UTC	Prefix gone	223.23.96.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.88.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.80.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.8.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.72.0/21
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2026-10-04 15:45 UTC	Prefix gone	223.23.56.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.48.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.40.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.32.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.248.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.240.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.24.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.232.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.224.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.216.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.208.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.200.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.192.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.192.0/18
2026-10-04 15:45 UTC	Prefix gone	223.23.184.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.176.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.168.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.160.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.16.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.152.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.144.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.136.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.128.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.128.0/18
2026-10-04 15:45 UTC	Prefix gone	223.23.120.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.112.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.104.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.0.0/21
2026-10-04 15:45 UTC	Prefix gone	223.23.0.0/18
2026-10-04 15:45 UTC	Prefix gone	223.22.228.0/24
2026-10-04 15:45 UTC	Prefix gone	223.22.224.0/22
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2026-10-04 15:45 UTC	Prefix gone	223.22.216.0/23
2026-10-04 15:45 UTC	Prefix gone	223.22.212.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.208.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.156.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.152.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.148.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.144.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.140.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.136.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.132.0/22
2026-10-04 15:45 UTC	Prefix gone	223.22.127.0/24
2026-10-04 15:45 UTC	Prefix gone	222.250.96.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.88.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.80.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.8.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.72.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.64.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.64.0/18
2026-10-04 15:45 UTC	Prefix gone	222.250.56.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.48.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.40.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.32.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.248.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.240.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.24.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.232.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.224.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.216.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.208.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.200.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.192.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.192.0/18
2026-10-04 15:45 UTC	Prefix gone	222.250.184.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.176.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.168.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.160.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.16.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.152.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.144.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.136.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.128.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.128.0/18
2026-10-04 15:45 UTC	Prefix gone	222.250.120.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.112.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.104.0/21
2026-10-04 15:45 UTC	Prefix gone	222.250.0.0/21
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2026-10-04 15:45 UTC	Prefix gone	103.231.48.0/24
2026-10-04 15:45 UTC	Prefix gone	101.139.96.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.88.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.80.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.8.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.72.0/21
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2026-10-04 15:45 UTC	Prefix gone	101.139.56.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.48.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.40.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.32.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.248.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.240.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.24.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.232.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.224.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.216.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.208.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.200.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.192.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.184.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.176.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.168.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.160.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.16.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.152.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.144.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.136.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.128.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.120.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.112.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.104.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.0.0/21
2026-10-04 15:45 UTC	Prefix gone	101.139.0.0/18
2026-10-04 15:45 UTC	Prefix gone	101.138.96.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.88.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.80.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.8.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.72.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.64.0/21
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2026-10-04 15:45 UTC	Prefix gone	101.138.56.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.48.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.40.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.32.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.248.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.240.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.24.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.232.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.224.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.216.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.208.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.200.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.192.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.192.0/18
2026-10-04 15:45 UTC	Prefix gone	101.138.184.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.176.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.168.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.160.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.16.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.152.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.144.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.136.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.128.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.128.0/18
2026-10-04 15:45 UTC	Prefix gone	101.138.120.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.112.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.104.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.0.0/21
2026-10-04 15:45 UTC	Prefix gone	101.138.0.0/18
2026-10-04 15:45 UTC	Prefix gone	101.137.96.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.88.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.80.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.8.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.72.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.64.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.64.0/18
2026-10-04 15:45 UTC	Prefix gone	101.137.56.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.48.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.40.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.32.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.248.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.240.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.24.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.232.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.224.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.216.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.208.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.200.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.192.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.192.0/18
2026-10-04 15:45 UTC	Prefix gone	101.137.184.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.176.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.168.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.160.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.16.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.152.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.144.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.136.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.128.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.128.0/18
2026-10-04 15:45 UTC	Prefix gone	101.137.120.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.112.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.104.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.0.0/21
2026-10-04 15:45 UTC	Prefix gone	101.137.0.0/18
2026-10-04 15:45 UTC	Prefix gone	101.136.96.0/21
2026-10-04 15:45 UTC	Prefix gone	101.136.88.0/21
2026-10-04 15:45 UTC	Prefix gone	101.136.80.0/21
2026-10-04 15:45 UTC	Prefix gone	101.136.8.0/21
2026-10-04 15:45 UTC	Prefix gone	101.136.72.0/21
2026-10-04 15:45 UTC	Prefix gone	101.136.64.0/21

WHOIS

aut-num:        AS131591
as-name:        AMBIT-AS-TW
handle:         AS131591
remarks:        Ambit Microsystem Corporation
remarks:        No. 32, Jihu Rd., Neihu Dist., Taipei 11492, Taiwan, R.O.C.
remarks:        Taipei Taiwan 114
technical,administrative:SY2644-AP (Steve Yao) <steve.ys.yao@ambit.com.tw>
abuse:          IRT-FET-TW (IRT-FET-TW) <davidlin1@fareastone.com.tw>
registration:   2015-05-06T04:26:09Z
last changed:   2025-11-06T09:30:18Z
source:         APNIC (RDAP)

Routing data

Updated 1 days ago

Registry record

Fetched 1 days ago 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/131591

const res = await fetch('https://ip-fd.net/api/v1/asn/131591', {
  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/131591', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/131591');
curl_setopt($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/131591", 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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