--- version: rssac002v3 service: a.root-servers.net start-period: '2018-03-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3578377624 dns-udp-queries-received-ipv6: 351016931 dns-tcp-queries-received-ipv4: 114336303 dns-tcp-queries-received-ipv6: 16150071 dns-udp-responses-sent-ipv4: 3574753113 dns-udp-responses-sent-ipv6: 350939483 dns-tcp-responses-sent-ipv4: 114466287 dns-tcp-responses-sent-ipv6: 16208487