--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5008770011 dns-udp-queries-received-ipv6: 1452710872 dns-tcp-queries-received-ipv4: 271696137 dns-tcp-queries-received-ipv6: 51654636 dns-udp-responses-sent-ipv4: 4994838912 dns-udp-responses-sent-ipv6: 1456482050 dns-tcp-responses-sent-ipv4: 268706289 dns-tcp-responses-sent-ipv6: 51618408