--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5764368766 dns-udp-queries-received-ipv6: 440589106 dns-tcp-queries-received-ipv4: 135418458 dns-tcp-queries-received-ipv6: 14491914 dns-udp-responses-sent-ipv4: 5761094646 dns-udp-responses-sent-ipv6: 440573787 dns-tcp-responses-sent-ipv4: 137437227 dns-tcp-responses-sent-ipv6: 14626337