--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6162701559 dns-udp-queries-received-ipv6: 1210355723 dns-tcp-queries-received-ipv4: 197883836 dns-tcp-queries-received-ipv6: 33174918 dns-udp-responses-sent-ipv4: 6001403800 dns-udp-responses-sent-ipv6: 1209975204 dns-tcp-responses-sent-ipv4: 192977466 dns-tcp-responses-sent-ipv6: 33909574