--- service: a.root-servers.net start-period: '2015-01-17T00:00:00Z' end-period: '2015-01-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2416413424 dns-udp-queries-received-ipv6: 204818931 dns-tcp-queries-received-ipv4: 13640296 dns-tcp-queries-received-ipv6: 2296556 dns-udp-responses-sent-ipv4: 2415880302 dns-udp-responses-sent-ipv6: 204616966 dns-tcp-responses-sent-ipv4: 12645971 dns-tcp-responses-sent-ipv6: 1595733