--- version: rssac002v3 service: m.root-servers.net start-period: '2019-04-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3558122086 dns-udp-queries-received-ipv6: 708965280 dns-udp-responses-sent-ipv4: 3287837448 dns-udp-responses-sent-ipv6: 671919560 dns-tcp-queries-received-ipv4: 161841648 dns-tcp-queries-received-ipv6: 48579635 dns-tcp-responses-sent-ipv4: 161678753 dns-tcp-responses-sent-ipv6: 48616269