Hosting Provider

Microsoft Azure

HostingRank #1 of 2,000

Microsoft Azure is the 1st largest of 2,000 hosting providers by IPv4 space, with 45,302 IPv4 networks (120,092,644 addresses) and 23,731 IPv6 networks. The ipapi.is API marks every address in these ranges as a datacenter address.

IPv4 addresses120,092,644in 45,302 networks

IPv6 networks23,731≈ 1.1 × 10²⁸ addresses

Provider rank#1of 2,000 by IPv4 space

Largest network20.64.0.0/104,194,304 addresses

Details

Hosting providerMicrosoft Azure

Website—

Rank#1 of 2,000

Classified byipapi.is hosting detection

IPv4 networks

45,302 networks · 120,092,644 addresses

Network	Addresses	First – last address
20.64.0.0/10	4,194,304	20.64.0.0 – 20.127.255.255
20.192.0.0/10	4,194,304	20.192.0.0 – 20.255.255.255
172.128.0.0/10	4,194,304	172.128.0.0 – 172.191.255.255
4.192.0.0/11	2,097,152	4.192.0.0 – 4.223.255.255
172.128.0.0/11	2,097,152	172.128.0.0 – 172.159.255.255
4.144.0.0/12	1,048,576	4.144.0.0 – 4.159.255.255
4.160.0.0/12	1,048,576	4.160.0.0 – 4.175.255.255
4.192.0.0/12	1,048,576	4.192.0.0 – 4.207.255.255
4.224.0.0/12	1,048,576	4.224.0.0 – 4.239.255.255
13.80.0.0/12	1,048,576	13.80.0.0 – 13.95.255.255
20.0.0.0/12	1,048,576	20.0.0.0 – 20.15.255.255
20.48.0.0/12	1,048,576	20.48.0.0 – 20.63.255.255
20.160.0.0/12	1,048,576	20.160.0.0 – 20.175.255.255
48.192.0.0/12	1,048,576	48.192.0.0 – 48.207.255.255
52.160.0.0/12	1,048,576	52.160.0.0 – 52.175.255.255
57.160.0.0/12	1,048,576	57.160.0.0 – 57.175.255.255
74.144.0.0/12	1,048,576	74.144.0.0 – 74.159.255.255
172.176.0.0/12	1,048,576	172.176.0.0 – 172.191.255.255
172.192.0.0/12	1,048,576	172.192.0.0 – 172.207.255.255
4.144.0.0/13	524,288	4.144.0.0 – 4.151.255.255
4.168.0.0/13	524,288	4.168.0.0 – 4.175.255.255
4.176.0.0/13	524,288	4.176.0.0 – 4.183.255.255
4.208.0.0/13	524,288	4.208.0.0 – 4.215.255.255
4.232.0.0/13	524,288	4.232.0.0 – 4.239.255.255
4.240.0.0/13	524,288	4.240.0.0 – 4.247.255.255

20.64.0.0/10
20.192.0.0/10
172.128.0.0/10
4.192.0.0/11
172.128.0.0/11
4.144.0.0/12
4.160.0.0/12
4.192.0.0/12
4.224.0.0/12
13.80.0.0/12
20.0.0.0/12
20.48.0.0/12
20.160.0.0/12
48.192.0.0/12
52.160.0.0/12
57.160.0.0/12
74.144.0.0/12
172.176.0.0/12
172.192.0.0/12
4.144.0.0/13
4.168.0.0/13
4.176.0.0/13
4.208.0.0/13
4.232.0.0/13
4.240.0.0/13

The 25 largest of 45,302. The API and the database have all of them.

IPv6 networks

23,731 networks

2603:1061:2000::/36
2603:1061:1000::/39
2603:1006:1400::/40
2603:1016:2400::/40
2603:1026:2400::/40
2603:1036:2400::/40
2603:1040:300::/40
2603:1040:500::/40
2603:1040:700::/40
2603:1046:1400::/40
2603:1050:100::/40
2603:1056:1400::/40
2603:1061:1700::/40
2603:1061:1800::/40
2603:1010:180::/41
2603:1010:140::/42
2603:1010:120::/43
2603:1063:2800::/43
2603:1063:2a00::/43
2603:1010:110::/44
2603:1061:1310::/44
2603:1063:2410::/44
2603:1063:2420::/44
2603:1063:2610::/44
2603:1063:2620::/44

2603:1061:2000::/36
2603:1061:1000::/39
2603:1006:1400::/40
2603:1016:2400::/40
2603:1026:2400::/40
2603:1036:2400::/40
2603:1040:300::/40
2603:1040:500::/40
2603:1040:700::/40
2603:1046:1400::/40
2603:1050:100::/40
2603:1056:1400::/40
2603:1061:1700::/40
2603:1061:1800::/40
2603:1010:180::/41
2603:1010:140::/42
2603:1010:120::/43
2603:1063:2800::/43
2603:1063:2a00::/43
2603:1010:110::/44
2603:1061:1310::/44
2603:1063:2410::/44
2603:1063:2420::/44
2603:1063:2610::/44
2603:1063:2620::/44

The 25 largest of 23,731. The API and the database have all of them.

Detect Microsoft Azure with the API

Every address in these networks comes back with is_datacenter: true and a datacenter object naming the provider. The detection flags need an API key: a free account comes with 1,000 requests a day.

curl "https://api.ipapi.is/?q=20.64.0.1&key=YOUR_API_KEY"

"is_datacenter": true,
"datacenter": {
  "datacenter": "Microsoft Azure",
  "network": "20.64.0.0 - 20.127.255.255"
}

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