--- service: j.root-servers.net start-period: '2016-01-31T00:00:00Z' end-period: '2016-01-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4666557339 dns-udp-queries-received-ipv6: 584975480 dns-tcp-queries-received-ipv4: 106815824 dns-tcp-queries-received-ipv6: 1694475 dns-udp-responses-sent-ipv4: 4323717643 dns-udp-responses-sent-ipv6: 589404015 dns-tcp-responses-sent-ipv4: 88885450 dns-tcp-responses-sent-ipv6: 322617