--- version: rssac002v3 service: m.root-servers.net start-period: '2019-09-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3888779926 dns-udp-queries-received-ipv6: 875516232 dns-udp-responses-sent-ipv4: 3642911332 dns-udp-responses-sent-ipv6: 835173758 dns-tcp-queries-received-ipv4: 216707679 dns-tcp-queries-received-ipv6: 56314380 dns-tcp-responses-sent-ipv4: 216090697 dns-tcp-responses-sent-ipv6: 56356248