--- service: a.root-servers.net start-period: '2015-11-29T00:00:00Z' end-period: '2015-11-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3524919235 dns-udp-queries-received-ipv6: 277469223 dns-tcp-queries-received-ipv4: 30818802 dns-tcp-queries-received-ipv6: 1713579 dns-udp-responses-sent-ipv4: 3524821871 dns-udp-responses-sent-ipv6: 277075218 dns-tcp-responses-sent-ipv4: 26162395 dns-tcp-responses-sent-ipv6: 268580