--- version: rssac002v3 service: m.root-servers.net start-period: '2019-04-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3432793745 dns-udp-queries-received-ipv6: 759664285 dns-udp-responses-sent-ipv4: 3124259441 dns-udp-responses-sent-ipv6: 679522377 dns-tcp-queries-received-ipv4: 148903421 dns-tcp-queries-received-ipv6: 51570056 dns-tcp-responses-sent-ipv4: 148554785 dns-tcp-responses-sent-ipv6: 51607364