--- version: rssac002v3 service: a.root-servers.net start-period: '2018-03-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4382013407 dns-udp-queries-received-ipv6: 398299101 dns-tcp-queries-received-ipv4: 159652778 dns-tcp-queries-received-ipv6: 15164306 dns-udp-responses-sent-ipv4: 4378528000 dns-udp-responses-sent-ipv6: 398191966 dns-tcp-responses-sent-ipv4: 159712506 dns-tcp-responses-sent-ipv6: 15279912