--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4969968956 dns-udp-queries-received-ipv6: 347533131 dns-tcp-queries-received-ipv4: 121115023 dns-tcp-queries-received-ipv6: 15970439 dns-udp-responses-sent-ipv4: 4900623192 dns-udp-responses-sent-ipv6: 347360771 dns-tcp-responses-sent-ipv4: 119631550 dns-tcp-responses-sent-ipv6: 15998882