--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5315208388 dns-udp-queries-received-ipv6: 1130756048 dns-tcp-queries-received-ipv4: 296724872 dns-tcp-queries-received-ipv6: 100551110 dns-udp-responses-sent-ipv4: 5144569715 dns-udp-responses-sent-ipv6: 1128377633 dns-tcp-responses-sent-ipv4: 284809526 dns-tcp-responses-sent-ipv6: 100854861