--- version: rssac002v3 service: m.root-servers.net start-period: '2019-02-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4022949362 dns-udp-queries-received-ipv6: 752717075 dns-udp-responses-sent-ipv4: 3877473416 dns-udp-responses-sent-ipv6: 705102377 dns-tcp-queries-received-ipv4: 188036980 dns-tcp-queries-received-ipv6: 43503526 dns-tcp-responses-sent-ipv4: 187888568 dns-tcp-responses-sent-ipv6: 43645993