"EDNS Aware Alexa Bottom 1000 Servers" only
"EDNS Aware Alexa Bottom 1000 Servers by IP Family" only
2014-10-12 - 2014-10-15: Domaincontrol removed the firewall blocking EDNS version 1 and EDNS flags.
2015-05-20: Amazon removed the the firewall blocking EDNS version 1 queries to their *.CO.UK servers.
"Alexa Bottom 1000 Servers Response Rates" only
2014-10-12 - 2014-10-15: Domaincontrol removed the firewall blocking EDNS version 1 and EDNS flags.
2015-05-20: Amazon removed the the firewall blocking EDNS version 1 queries to their *.CO.UK servers.
"Alexa Bottom 1000 Servers Response Rates by IP Family" only
"Alexa Bottom 1000 Servers EDNS(0) Failure Reasons" only
2014-10-12 - 2014-10-15: Domaincontrol removed the firewall blocking EDNS version 1 and EDNS flags.
2015-05-20: Amazon removed the the firewall blocking EDNS version 1 queries to t
heir *.CO.UK servers.
"Alexa Bottom 1000 Servers EDNS(1) Failure Reasons" only
"Alexa Bottom 1000 Servers EDNS(0) Unknown Option Failure Reasons" only
"Alexa Bottom 1000 Servers EDNS(1) Unknown Option Failure Reasons" only
2014-10-12 - 2014-10-15: Domaincontrol removed the firewall blocking EDNS version 1 and EDNS flags.
2015-05-20: Amazon removed the the firewall blocking EDNS version 1 queries to their *.CO.UK servers.
"Alexa Bottom 1000 Servers EDNS(0) Unknown Flags Failure Reasons" only
Timeouts in the above test can be due to fragmented IP packets being filtered.
"Alexa Bottom 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 Bottom 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
2014-10-12 - 2014-10-15: Domaincontrol removed the firewall blocking EDNS version 1 and EDNS flags.
2015-05-20: Amazon removed the the firewall blocking EDNS version 1 queries to their *.CO.UK servers.
"Alexa Bottom 1000 Servers Firewalls by Type" only
"Alexa Bottom 1000 Servers Supported EDNS Options" only
"Alexa Bottom 1000 Signed Zones" only
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