--- version: rssac002v3 service: m.root-servers.net start-period: '2019-05-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4255691100 dns-udp-queries-received-ipv6: 811915165 dns-udp-responses-sent-ipv4: 4001744808 dns-udp-responses-sent-ipv6: 752327255 dns-tcp-queries-received-ipv4: 198977168 dns-tcp-queries-received-ipv6: 50294854 dns-tcp-responses-sent-ipv4: 195539908 dns-tcp-responses-sent-ipv6: 50379397