--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6227968966 dns-udp-queries-received-ipv6: 363726620 dns-tcp-queries-received-ipv4: 106105957 dns-tcp-queries-received-ipv6: 13830063 dns-udp-responses-sent-ipv4: 6146132576 dns-udp-responses-sent-ipv6: 363304318 dns-tcp-responses-sent-ipv4: 108267392 dns-tcp-responses-sent-ipv6: 13922014