--- service: h.root-servers.net metric: traffic-volume version: rssac002v4 start-period: 2021-12-23T00:00:00Z dns-udp-queries-received-ipv4: 3182701312 dns-udp-queries-received-ipv6: 659288975 dns-tcp-queries-received-ipv4: 57491003 dns-tcp-queries-received-ipv6: 24985404 dns-udp-responses-sent-ipv4: 3179255353 dns-udp-responses-sent-ipv6: 659028298 dns-tcp-responses-sent-ipv4: 58818536 dns-tcp-responses-sent-ipv6: 25748358