_acme-challenge.i.root-servers.org. A NS SOA MX TXT AAAA RRSIG NSEC DNSKEY CDS CDNSKEY TYPE65534
Question and response
Question
dig i.root-servers.org. NSEC
Answer
i.root-servers.org. 5 NSEC _acme-challenge.i.root-servers.org. A NS SOA MX TXT AAAA RRSIG NSEC DNSKEY CDS CDNSKEY TYPE65534
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0