--- version: rssac002v3 service: m.root-servers.net start-period: '2019-01-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3278530512 dns-udp-queries-received-ipv6: 615288632 dns-udp-responses-sent-ipv4: 3167905712 dns-udp-responses-sent-ipv6: 599172630 dns-tcp-queries-received-ipv4: 199146801 dns-tcp-queries-received-ipv6: 36622448 dns-tcp-responses-sent-ipv4: 198750360 dns-tcp-responses-sent-ipv6: 36768588