--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5045026167 dns-udp-queries-received-ipv6: 1410896908 dns-tcp-queries-received-ipv4: 284000761 dns-tcp-queries-received-ipv6: 89193813 dns-udp-responses-sent-ipv4: 5088064000 dns-udp-responses-sent-ipv6: 1413898880 dns-tcp-responses-sent-ipv4: 282018632 dns-tcp-responses-sent-ipv6: 89245219