EDNS Compliance Tester

Checking: 'ycombinator.com' as at 2025-10-15T17:21:43Z

ycombinator.com. @205.251.199.122 (ns-1914.awsdns-47.co.uk.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (becd43e4000f917180ebc21a50be23bd -)
ycombinator.com. @2600:9000:5307:7a00::1 (ns-1914.awsdns-47.co.uk.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (205bebe8ccf295d0648bfa592e892700 -)

ycombinator.com. @205.251.194.44 (ns-556.awsdns-05.net.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (52120e5b4bc28414e4ce17e467dff508 -)
ycombinator.com. @2600:9000:5302:2c00::1 (ns-556.awsdns-05.net.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (eecdf96fed9722bd920a22bc13e532af -)

ycombinator.com. @205.251.192.225 (ns-225.awsdns-28.com.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (6bb481bfe2e2931d3cb4cecab9911133 -)
ycombinator.com. @2600:9000:5300:e100::1 (ns-225.awsdns-28.com.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (6bb481bfe2e2931d3cb4cecab9911133 -)

ycombinator.com. @205.251.197.131 (ns-1411.awsdns-48.org.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (ebed654687c1fa5afab15ed6ed1ccd36 -)
ycombinator.com. @2600:9000:5305:8300::1 (ns-1411.awsdns-48.org.): dns=ok zflag=ok edns=ok edns1=ok edns@512=ok,notc ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok,nsid,subnet (75c89ad4344c8e6aec978c44a31c14f4 -)

All Ok

Codes

ok - test passed.
nsid - NSID supported [RFC5001].
subnet - EDNS Client Subnet supported [RFC7871].

To retrieve this report in the future: https://ednscomp.isc.org/ednscomp/74f06a3c86

The source code for the tester can be downloaded from ISC Open Source Projects / DNS-Compliance-Testing.

For more information about EDNS please see the main site.