--- version: rssac002v3 service: m.root-servers.net start-period: '2019-05-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3978696392 dns-udp-queries-received-ipv6: 824888067 dns-udp-responses-sent-ipv4: 3681663021 dns-udp-responses-sent-ipv6: 770173951 dns-tcp-queries-received-ipv4: 170183003 dns-tcp-queries-received-ipv6: 49890327 dns-tcp-responses-sent-ipv4: 169975153 dns-tcp-responses-sent-ipv6: 49941020