--- service: h.root-servers.net metric: traffic-volume version: rssac002v3 start-period: '2019-12-21T00:00:00Z' dns-udp-queries-received-ipv4: 3398923177 dns-udp-queries-received-ipv6: 780236913 dns-tcp-queries-received-ipv4: 149265094 dns-tcp-queries-received-ipv6: 61946741 dns-udp-responses-sent-ipv4: 3239865272 dns-udp-responses-sent-ipv6: 761756824 dns-tcp-responses-sent-ipv4: 134640910 dns-tcp-responses-sent-ipv6: 60824641