--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6388224360 dns-udp-queries-received-ipv6: 1165234472 dns-tcp-queries-received-ipv4: 178304721 dns-tcp-queries-received-ipv6: 36273990 dns-udp-responses-sent-ipv4: 6243091995 dns-udp-responses-sent-ipv6: 1164147072 dns-tcp-responses-sent-ipv4: 174419087 dns-tcp-responses-sent-ipv6: 37661367