--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4669110570 dns-udp-queries-received-ipv6: 396798855 dns-tcp-queries-received-ipv4: 115321943 dns-tcp-queries-received-ipv6: 15910841 dns-udp-responses-sent-ipv4: 4663397010 dns-udp-responses-sent-ipv6: 396754901 dns-tcp-responses-sent-ipv4: 116165392 dns-tcp-responses-sent-ipv6: 15953670