--- service: j.root-servers.net start-period: '2017-01-31T00:00:00Z' end-period: '2017-01-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6424009374 dns-udp-queries-received-ipv6: 635220040 dns-tcp-queries-received-ipv4: 166175306 dns-tcp-queries-received-ipv6: 12850601 dns-udp-responses-sent-ipv4: 6312938099 dns-udp-responses-sent-ipv6: 638875574 dns-tcp-responses-sent-ipv4: 153591744 dns-tcp-responses-sent-ipv6: 12976561