--- version: rssac002v3 service: a.root-servers.net start-period: '2018-03-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3754893256 dns-udp-queries-received-ipv6: 363096368 dns-tcp-queries-received-ipv4: 110697359 dns-tcp-queries-received-ipv6: 15011909 dns-udp-responses-sent-ipv4: 3749304867 dns-udp-responses-sent-ipv6: 363009984 dns-tcp-responses-sent-ipv4: 111701852 dns-tcp-responses-sent-ipv6: 15059936