AS45139 Microsoft Corp

United States MICROSOFT-AS-AP APNIC 2 IPv4 prefixes 3 IPv6 prefixes

IPv4 addresses

512

IPv6 /48 networks

RPKI

4 valid1 invalid0 no ROA

Peers and downstreams

Holder

AS name: MICROSOFT-AS-AP
Description: Microsoft Corp
Organisation: Microsoft Singapore Pte. Ltd.
Abuse contact: Not published
Assigned: 2008-03-06
Registered: 2008-09-04
Record last changed: 2020-07-07 05:09 UTC

167.220.226.0/23 167.220.227.0/24

Routing changes

Last 30 days

2026-10-04 04:09 UTC	Neighbour gone	AS136948	upstream
2026-10-04 04:09 UTC	Relationship changed	AS55410	upstream to peer
2026-10-04 04:09 UTC	Relationship changed	AS4755	upstream to peer

WHOIS

aut-num:        AS45139
as-name:        MICROSOFT-AS-AP
handle:         AS45139
remarks:        Microsoft Corp
remarks:        For routing problems with this ASN contact the admin-c
abuse:          IRT-MICROSOFT-APNIC-SG (IRT-MICROSOFT-APNIC-SG) <abuse@microsoft.com>
registrant:     ORG-MSPL4-AP (Microsoft Singapore Pte. Ltd.) <dawn.bedard@microsoft.com>
technical,administrative:NK160-AP (Naoki Kitajima) <naokikit@microsoft.com>
registration:   2008-09-04T06:40:44Z
last changed:   2020-07-07T05:09:05Z
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/45139

const res = await fetch('https://ip-fd.net/api/v1/asn/45139', {
  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/45139', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/45139');
curl_setopt($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/45139", 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.

AS4755	TATA Communications formerly VSNL is Leading ISP TATACOMM-AS
AS55410	Vodafone Idea Ltd VIL-AS-AP