--- version: rssac002v3 service: a.root-servers.net start-period: '2019-04-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6094528994 dns-udp-queries-received-ipv6: 913147148 dns-tcp-queries-received-ipv4: 211263053 dns-tcp-queries-received-ipv6: 29466069 dns-udp-responses-sent-ipv4: 5964378189 dns-udp-responses-sent-ipv6: 912648612 dns-tcp-responses-sent-ipv4: 207710246 dns-tcp-responses-sent-ipv6: 29949777