--- version: rssac002v3 service: a.root-servers.net start-period: '2018-09-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4250265068 dns-udp-queries-received-ipv6: 603764429 dns-tcp-queries-received-ipv4: 112478013 dns-tcp-queries-received-ipv6: 22089705 dns-udp-responses-sent-ipv4: 4135118481 dns-udp-responses-sent-ipv6: 602831354 dns-tcp-responses-sent-ipv4: 108634549 dns-tcp-responses-sent-ipv6: 22139245