Regional Internet Registry
ARIN
American Registry for Internet Numbers
IPv4 addresses
1,645,227,428
CIDR ranges
224,453
Countries
50
Countries served by ARIN
United States
1,511.84M
China
345.28M
Japan
199.96M
Germany
135.80M
United Kingdom
129.39M
South Korea
116.25M
Brazil
85.34M
France
83.63M
Canada
72.73M
Italy
57.27M
The Netherlands
54.48M
Australia
53.09M
India
48.91M
Russia
45.73M
Taiwan
37.18M
Spain
35.52M
Sweden
32.26M
Mexico
30.79M
South Africa
29.09M
Singapore
28.20M
Switzerland
24.81M
Egypt
24.22M
Hong Kong
22.91M
Poland
21.11M
Indonesia
20.22M
Argentina
19.66M
Ireland
18.14M
Colombia
17.97M
Türkiye
17.38M
Vietnam
16.76M
Norway
16.38M
Finland
14.97M
Belgium
14.64M
Denmark
12.67M
Saudi Arabia
12.48M
Morocco
12.30M
Austria
11.41M
Iran
10.96M
Chile
10.51M
Thailand
10.08M
Ukraine
9.43M
Israel
8.90M
Czechia
8.76M
Malaysia
8.03M
Tunisia
7.88M
Venezuela
7.72M
Romania
7.49M
New Zealand
7.38M
Portugal
6.90M
Philippines
6.75M