--- service: h.root-servers.net metric: traffic-volume version: rssac002v4 start-period: 2021-12-28T00:00:00Z dns-udp-queries-received-ipv4: 3143395786 dns-udp-queries-received-ipv6: 652501436 dns-tcp-queries-received-ipv4: 56920556 dns-tcp-queries-received-ipv6: 27421901 dns-udp-responses-sent-ipv4: 3140203600 dns-udp-responses-sent-ipv6: 652315981 dns-tcp-responses-sent-ipv4: 58331297 dns-tcp-responses-sent-ipv6: 28388401