--- version: rssac002v3 service: a.root-servers.net start-period: '2017-04-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3520739768 dns-udp-queries-received-ipv6: 430113556 dns-tcp-queries-received-ipv4: 173373698 dns-tcp-queries-received-ipv6: 8083016 dns-udp-responses-sent-ipv4: 3514400220 dns-udp-responses-sent-ipv6: 430006039 dns-tcp-responses-sent-ipv4: 173303488 dns-tcp-responses-sent-ipv6: 8246240