--- version: rssac002v4 service: a.root-servers.net start-period: '2022-05-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4594958916 dns-udp-queries-received-ipv6: 1446698310 dns-tcp-queries-received-ipv4: 272153903 dns-tcp-queries-received-ipv6: 48658800 dns-udp-responses-sent-ipv4: 4460652261 dns-udp-responses-sent-ipv6: 1451270954 dns-tcp-responses-sent-ipv4: 254528272 dns-tcp-responses-sent-ipv6: 48647738