--- version: rssac002v3 service: a.root-servers.net start-period: '2017-12-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4955198992 dns-udp-queries-received-ipv6: 394881903 dns-tcp-queries-received-ipv4: 157564393 dns-tcp-queries-received-ipv6: 14329609 dns-udp-responses-sent-ipv4: 4952998151 dns-udp-responses-sent-ipv6: 394860618 dns-tcp-responses-sent-ipv4: 160380200 dns-tcp-responses-sent-ipv6: 14438943