EDNS Compliance Tester

Checking: 'ycombinator.com' as at 2025-12-02T00:56:13Z

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 (2443fb3ef6da28428300504871e93ab2 -)
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 (7679bdc77cb7b60de9c4a325d319b07f -)

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 (4d178b1cd9cd8bae0126403c185eb1b7 -)
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 (3b3b0efbdb7080161bbc1e874583d07e -)

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 (426c7ba21d342a768b30afaa5e964ccf -)
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 (d1cca1d329fe56285cdf1626805cb62b -)

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 (fe31e0bf2ed75113337b22f65de920b1 -)
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 (112264351a7508b43f82132c47a50264 -)

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/8367b82f1d

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.