--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4267200032 dns-udp-queries-received-ipv6: 1264869368 dns-tcp-queries-received-ipv4: 231372674 dns-tcp-queries-received-ipv6: 48063981 dns-udp-responses-sent-ipv4: 4164307596 dns-udp-responses-sent-ipv6: 1264132431 dns-tcp-responses-sent-ipv4: 229149416 dns-tcp-responses-sent-ipv6: 48025186