http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xml
http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml
http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt

Fuente:
Redacción IPv6TF-EC
2011-02-03