The M9 metrics analyze the Concentration of Authoritative Services, across 6 categories: top 100, 101 to 1,000, 1,001 to 10,000, 10,001 to 100000, and 100,001 to 1M domains in the "Majectic Million" list, and names in the COM zone (See About M9 page for details). The level of concentration is assed based on either names or addresses.
The service graph shows the share of the largest name services providers across all categories. The service name is derived from the domain names of the name servers for the domains in each category. A tabulated version of the same data is available here.
The network graph shows the share of the largest networks that host name services across all categories, identified by AS number of the IP address of the name servers. A tabulated version of the same data is available here.
The following table provides a summary view of concentration in each category: how many services are used on average per domain, and how many services account for 50% or 90% of the market.
The following table provides a summary view of concentration in each category: how many ASes are used on average per domain, and how many ASes account for 50% or 90% of the market.
The following table compares the concentration of DNS service providers and that of Domain hosters, or CDNs.