--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3531921233 dns-udp-queries-received-ipv6: 415244245 dns-tcp-queries-received-ipv4: 151083740 dns-tcp-queries-received-ipv6: 15885474 dns-udp-responses-sent-ipv4: 3527891993 dns-udp-responses-sent-ipv6: 415198830 dns-tcp-responses-sent-ipv4: 150883763 dns-tcp-responses-sent-ipv6: 15985764