--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5279887809 dns-udp-queries-received-ipv6: 1007058945 dns-tcp-queries-received-ipv4: 158971911 dns-tcp-queries-received-ipv6: 29063522 dns-udp-responses-sent-ipv4: 5162508141 dns-udp-responses-sent-ipv6: 1006590850 dns-tcp-responses-sent-ipv4: 155529967 dns-tcp-responses-sent-ipv6: 29674101