ARIN average pricing 2015
/24 average price USD 10.76
/23 average price USD 9.81
/22 average price USD 8.45
/21 average price USD 7.78
/20 average price USD 8.08
RIPE average pricing 2015
/24 average price EUR n/a
/23 average price EUR n/a
/22 average price EUR n/a
/21 average price EUR 9.80
/20 average price EUR n/a
The above pricing information is based on resources that can be found on the internet along with IPV4 XI transactions.
The general trend that can be seen is that prices are slowly increasing.