--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3949826773 dns-udp-queries-received-ipv6: 322979328 dns-tcp-queries-received-ipv4: 118177741 dns-tcp-queries-received-ipv6: 13375451 dns-udp-responses-sent-ipv4: 3876825353 dns-udp-responses-sent-ipv6: 322207406 dns-tcp-responses-sent-ipv4: 118135375 dns-tcp-responses-sent-ipv6: 13405493