--- version: rssac002v3 service: m.root-servers.net start-period: '2019-04-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3523978999 dns-udp-queries-received-ipv6: 747301903 dns-udp-responses-sent-ipv4: 3377393648 dns-udp-responses-sent-ipv6: 657680576 dns-tcp-queries-received-ipv4: 161395580 dns-tcp-queries-received-ipv6: 43447297 dns-tcp-responses-sent-ipv4: 161438801 dns-tcp-responses-sent-ipv6: 43580524