--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6059602680 dns-udp-queries-received-ipv6: 1179161708 dns-tcp-queries-received-ipv4: 172806342 dns-tcp-queries-received-ipv6: 31850543 dns-udp-responses-sent-ipv4: 5922987944 dns-udp-responses-sent-ipv6: 1178051538 dns-tcp-responses-sent-ipv4: 169210395 dns-tcp-responses-sent-ipv6: 32539614