--- version: rssac002v3 service: m.root-servers.net start-period: '2019-04-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3677722227 dns-udp-queries-received-ipv6: 720397222 dns-udp-responses-sent-ipv4: 3393576733 dns-udp-responses-sent-ipv6: 672797486 dns-tcp-queries-received-ipv4: 165178976 dns-tcp-queries-received-ipv6: 46366332 dns-tcp-responses-sent-ipv4: 164958797 dns-tcp-responses-sent-ipv6: 46464610