--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6393461385 dns-udp-queries-received-ipv6: 382632131 dns-tcp-queries-received-ipv4: 101075305 dns-tcp-queries-received-ipv6: 14343148 dns-udp-responses-sent-ipv4: 6308612846 dns-udp-responses-sent-ipv6: 382190913 dns-tcp-responses-sent-ipv4: 100039720 dns-tcp-responses-sent-ipv6: 14405469