--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3262173795 dns-udp-queries-received-ipv6: 360039222 dns-tcp-queries-received-ipv4: 143351099 dns-tcp-queries-received-ipv6: 14835658 dns-udp-responses-sent-ipv4: 3260031499 dns-udp-responses-sent-ipv6: 359948858 dns-tcp-responses-sent-ipv4: 143581836 dns-tcp-responses-sent-ipv6: 14963324