--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6399310574 dns-udp-queries-received-ipv6: 1177409672 dns-tcp-queries-received-ipv4: 226920008 dns-tcp-queries-received-ipv6: 33799607 dns-udp-responses-sent-ipv4: 6216316628 dns-udp-responses-sent-ipv6: 1176837814 dns-tcp-responses-sent-ipv4: 222668953 dns-tcp-responses-sent-ipv6: 34496726