--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5348388465 dns-udp-queries-received-ipv6: 1041115451 dns-tcp-queries-received-ipv4: 157250357 dns-tcp-queries-received-ipv6: 30766675 dns-udp-responses-sent-ipv4: 5226907366 dns-udp-responses-sent-ipv6: 1040547974 dns-tcp-responses-sent-ipv4: 154171146 dns-tcp-responses-sent-ipv6: 31469747