--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6692520422 dns-udp-queries-received-ipv6: 376082846 dns-tcp-queries-received-ipv4: 135773387 dns-tcp-queries-received-ipv6: 16058071 dns-udp-responses-sent-ipv4: 6614196192 dns-udp-responses-sent-ipv6: 375746223 dns-tcp-responses-sent-ipv4: 134583187 dns-tcp-responses-sent-ipv6: 16043350