--- version: rssac002v4 service: a.root-servers.net start-period: '2021-10-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4553454919 dns-udp-queries-received-ipv6: 1076927703 dns-tcp-queries-received-ipv4: 291994853 dns-tcp-queries-received-ipv6: 118060621 dns-udp-responses-sent-ipv4: 4421971789 dns-udp-responses-sent-ipv6: 1075219514 dns-tcp-responses-sent-ipv4: 288992804 dns-tcp-responses-sent-ipv6: 117895584