--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4959285572 dns-udp-queries-received-ipv6: 1391012471 dns-tcp-queries-received-ipv4: 275944947 dns-tcp-queries-received-ipv6: 48119892 dns-udp-responses-sent-ipv4: 4993503966 dns-udp-responses-sent-ipv6: 1394397118 dns-tcp-responses-sent-ipv4: 272730551 dns-tcp-responses-sent-ipv6: 48134988