--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4203090815 dns-udp-queries-received-ipv6: 395155637 dns-tcp-queries-received-ipv4: 146611871 dns-tcp-queries-received-ipv6: 15199277 dns-udp-responses-sent-ipv4: 4199301984 dns-udp-responses-sent-ipv6: 395081695 dns-tcp-responses-sent-ipv4: 146608732 dns-tcp-responses-sent-ipv6: 15279526