--- version: rssac002v3 service: j.root-servers.net start-period: '2019-02-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7295708878 dns-udp-queries-received-ipv6: 936321164 dns-tcp-queries-received-ipv4: 583050089 dns-tcp-queries-received-ipv6: 92934374 dns-udp-responses-sent-ipv4: 6833254205 dns-udp-responses-sent-ipv6: 880216611 dns-tcp-responses-sent-ipv4: 412843815 dns-tcp-responses-sent-ipv6: 66263661