A subnet is a group of related IP addresses, often belonging to the same provider. Links from many different subnets likely originate from many different organizations.
This makes it a stricter measure for the distribution of your links than referring domainsReferring Domains The number of unique websites (domains) that link to your website or page. or referring IPsReferring IPs The number of distinct IP addresses hosting websites that link to your site..
Also known as: referring subnet, C-subnets, referring C-subnets
