--- service: a.root-servers.net start-period: '2015-10-15T00:00:00Z' end-period: '2015-10-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3493693751 dns-udp-queries-received-ipv6: 4508494 dns-tcp-queries-received-ipv4: 20029466 dns-tcp-queries-received-ipv6: 3825751 dns-udp-responses-sent-ipv4: 3493615317 dns-udp-responses-sent-ipv6: 4563989 dns-tcp-responses-sent-ipv4: 17774662 dns-tcp-responses-sent-ipv6: 3885795