--- version: rssac002v3 service: a.root-servers.net start-period: '2020-12-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7930532854 dns-udp-queries-received-ipv6: 1729000433 dns-tcp-queries-received-ipv4: 311903266 dns-tcp-queries-received-ipv6: 138532102 dns-udp-responses-sent-ipv4: 7689818456 dns-udp-responses-sent-ipv6: 1727412870 dns-tcp-responses-sent-ipv4: 296591411 dns-tcp-responses-sent-ipv6: 139323859