--- version: rssac002v3 service: a.root-servers.net start-period: '2018-03-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4389117583 dns-udp-queries-received-ipv6: 365102280 dns-tcp-queries-received-ipv4: 154313592 dns-tcp-queries-received-ipv6: 16197292 dns-udp-responses-sent-ipv4: 4385597874 dns-udp-responses-sent-ipv6: 365061102 dns-tcp-responses-sent-ipv4: 154565354 dns-tcp-responses-sent-ipv6: 16239075