--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4730399147 dns-udp-queries-received-ipv6: 1330805608 dns-tcp-queries-received-ipv4: 252888697 dns-tcp-queries-received-ipv6: 50474536 dns-udp-responses-sent-ipv4: 4718986251 dns-udp-responses-sent-ipv6: 1334428645 dns-tcp-responses-sent-ipv4: 250780447 dns-tcp-responses-sent-ipv6: 50432566