"EDNS Aware Alexa Top 1000 Servers" only
"EDNS Aware Alexa Top 1000 Servers by IP Family" only
"Alexa Top 1000 Servers Response Rates" only
"Alexa Top 1000 Servers Response Rates by IP Family" only
"Alexa Top 1000 Servers EDNS(0) Failure Reasons" only
"Alexa Top 1000 Servers EDNS(1) Failure Reasons" only
"Alexa Top 1000 Servers EDNS(0) Unknown Option Failure Reasons" only
"Alexa Top 1000 Servers EDNS(1) Unknown Option Failure Reasons" only
"Alexa Top 1000 Servers EDNS(0) Unknown Flags Failure Reasons" only
Timeouts in the above test can be due to fragmented IP packets being filtered.
"Alexa Top 1000 Servers EDNS(0) DO=1 Failure Reasons" only
The timeout and notimp failures above are most likely due to mishandling of DNSKEY requests rather than EDNS.
"Alexa Top 1000 Servers EDNS(0) Truncated Response Failure Reasons" only
EDNS(0) all EDNS queries have timeout and there was a response to the plain DNS query
EDNS(1) only the two EDNS version 1 queries timeout
EDNS(1) + FLAGS the two EDNS version 1 queries timeout as well as the unknown EDNS flags query
"Alexa Top 1000 Servers Firewalls by Type" only "Alexa Top 1000 Servers Supported EDNS Options" only "Alexa Top 1000 Signed Zones" only © 2019 Internet Systems Consortium