--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4076447127 dns-udp-queries-received-ipv6: 445314415 dns-tcp-queries-received-ipv4: 124025205 dns-tcp-queries-received-ipv6: 19551297 dns-udp-responses-sent-ipv4: 3972071681 dns-udp-responses-sent-ipv6: 443142470 dns-tcp-responses-sent-ipv4: 120802876 dns-tcp-responses-sent-ipv6: 19552234