--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7784821581 dns-udp-queries-received-ipv6: 420487108 dns-tcp-queries-received-ipv4: 140340768 dns-tcp-queries-received-ipv6: 16386315 dns-udp-responses-sent-ipv4: 7653701563 dns-udp-responses-sent-ipv6: 420051219 dns-tcp-responses-sent-ipv4: 139821733 dns-tcp-responses-sent-ipv6: 16429255