--- service: a.root-servers.net start-period: '2016-11-22T00:00:00Z' end-period: '2016-11-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4816191250 dns-udp-queries-received-ipv6: 424858997 dns-tcp-queries-received-ipv4: 209050019 dns-tcp-queries-received-ipv6: 9894720 dns-udp-responses-sent-ipv4: 4798022211 dns-udp-responses-sent-ipv6: 424672587 dns-tcp-responses-sent-ipv4: 209056444 dns-tcp-responses-sent-ipv6: 9940449