[dns-operations] EDNS and TLDs

Mark Andrews marka at isc.org
Fri Oct 28 05:35:21 UTC 2016

The following servers don't support EDNS.

im (hoppy.iom.com)
im (barney.advsys.co.uk)
im (pebbles.iom.com)
ye (sah1.ye)

The following servers nominally support EDNS by do not correctly
handle well formed EDNS queries. They either block the queries
and/or send malformed responses depending on how the request was

cy (ns2.ucy.ac.cy)
cy (cynic.dns.cy)
dj (bow.intnet.dj)
et (ns1.telecom.net.et)
et (ns2.telecom.net.et)
fo (copenhagen.nic.fo)
fo 2a01:630:0:40::12 (copenhagen.nic.fo)
ge (ns.nic.ge)
gy (ns1.gtt.co.gy)
gy (ns2.gtt.co.gy)
kp (ns1.kptc.kp)
kp (ns2.kptc.kp)
kr (e.dns.kr)
kw (dns1.kw)
kw (dns2.kw)
kw (dns3.kw)
ma (dns.inria.fr)
mp (ns1.nic.mp)
mp (ns2.nic.mp)
mp (ns3.nic.mp)
mp (ns4.nic.mp)
np (shikhar.mos.com.np)
ps (dns1.gov.ps)
samsung (e.dns.kr)
ua 2001:470:2e:1::27 (he1.ns.ua)
ua (he1.ns.ua)
vu (cctld-vu.orange.mu)
xn--3e0b707e (e.dns.kr)
xn--cg4bki (e.dns.kr)
xn--fiqs8s (k.dns.cn)
xn--fiqz9s (k.dns.cn)
xn--ygbi2ammx (dns1.gov.ps)
za (disa.tenet.ac.za)
za 2001:4200:ffff:a::1 (disa.tenet.ac.za)

For specific errors see https://ednscomp.isc.org/compliance/tld-report.html
or run the EDNS compliance tester https://ednscomp.isc.org/ednscomp

Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE:	+61 2 9871 4742		         INTERNET: marka at isc.org

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