--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3772371144 dns-udp-queries-received-ipv6: 382576942 dns-tcp-queries-received-ipv4: 154256094 dns-tcp-queries-received-ipv6: 15735621 dns-udp-responses-sent-ipv4: 3770023144 dns-udp-responses-sent-ipv6: 382500061 dns-tcp-responses-sent-ipv4: 154972680 dns-tcp-responses-sent-ipv6: 15812529