--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4927745828 dns-udp-queries-received-ipv6: 1328525291 dns-tcp-queries-received-ipv4: 272535950 dns-tcp-queries-received-ipv6: 57166696 dns-udp-responses-sent-ipv4: 5103067585 dns-udp-responses-sent-ipv6: 1348440558 dns-tcp-responses-sent-ipv4: 269261302 dns-tcp-responses-sent-ipv6: 57266495