--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4992871963 dns-udp-queries-received-ipv6: 1334090354 dns-tcp-queries-received-ipv4: 274104460 dns-tcp-queries-received-ipv6: 48571072 dns-udp-responses-sent-ipv4: 5112371244 dns-udp-responses-sent-ipv6: 1348857527 dns-tcp-responses-sent-ipv4: 272538934 dns-tcp-responses-sent-ipv6: 48649494