--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4806882804 dns-udp-queries-received-ipv6: 390227003 dns-tcp-queries-received-ipv4: 111910122 dns-tcp-queries-received-ipv6: 15818764 dns-udp-responses-sent-ipv4: 4760708079 dns-udp-responses-sent-ipv6: 390040686 dns-tcp-responses-sent-ipv4: 112687324 dns-tcp-responses-sent-ipv6: 15865883