--- service: a.root-servers.net start-period: '2016-07-29T00:00:00Z' end-period: '2016-07-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3825334294 dns-udp-queries-received-ipv6: 445399153 dns-tcp-queries-received-ipv4: 92819495 dns-tcp-queries-received-ipv6: 7213628 dns-udp-responses-sent-ipv4: 3823950323 dns-udp-responses-sent-ipv6: 445235432 dns-tcp-responses-sent-ipv4: 74376373 dns-tcp-responses-sent-ipv6: 1586180