--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3798058876 dns-udp-queries-received-ipv6: 492902831 dns-tcp-queries-received-ipv4: 121966308 dns-tcp-queries-received-ipv6: 18902584 dns-udp-responses-sent-ipv4: 3700703958 dns-udp-responses-sent-ipv6: 492415341 dns-tcp-responses-sent-ipv4: 119225962 dns-tcp-responses-sent-ipv6: 18963532