[dns-operations] NXDOMAIN at zone apex???

Viktor Dukhovni ietf-dane at dukhovni.org
Thu May 25 00:16:06 UTC 2017


I just ran into a bunch of domains that return NXDOMAIN for MX
queries at the zone apex along with an SOA record for the qname!
I would have thought that's invalid, but unbound does not mind:

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 57849
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 8192
;; QUESTION SECTION:
;f2qwqok62.biz.                 IN      MX

;; AUTHORITY SECTION:
f2qwqok62.biz.          60      IN      SOA     ns009.adcloud-ex.net. root.ns009.adcloud-ex.net. 1 60 7200 604800 60

-- 
	Viktor.

Some domains of this form:

   domain name                      SOA mmname                    SOA mrname
--------------               -----------------        ----------------------
15ihat0xhe.biz               ddns.change-d.net        root at ddns.change-d.net
1rrkfbi94e.biz               ddns.change-d.net        root at ddns.change-d.net
4kgtjrrijp.biz               ddns.change-d.net        root at ddns.change-d.net
6cz4t7xsif.biz               ddns.change-d.net        root at ddns.change-d.net
6mi1oto1fj.biz               ddns.change-d.net        root at ddns.change-d.net
6psub2fa4c.biz               ddns.change-d.net        root at ddns.change-d.net
6rv17mlmzz185k.biz           ddns.change-d.net        root at ddns.change-d.net
7gw9ph36k774y.biz            ddns.change-d.net        root at ddns.change-d.net
7twpylkqyrl.biz              ddns.change-d.net        root at ddns.change-d.net
7xlewwz8.biz                 ddns.change-d.net        root at ddns.change-d.net
857gdeh2zpa67.biz            ddns.change-d.net        root at ddns.change-d.net
89k4fitezn.biz               ddns.change-d.net        root at ddns.change-d.net
8x7j8po9nptcn.biz            ddns.change-d.net        root at ddns.change-d.net
99j4zsoqp3.biz               ddns.change-d.net        root at ddns.change-d.net
abbxocmaj3.biz               ddns.change-d.net        root at ddns.change-d.net
axrmd6ava.biz                ddns.change-d.net        root at ddns.change-d.net
azdvmtgf.biz                 ddns.change-d.net        root at ddns.change-d.net
b1cu-esxzge.biz              ddns.change-d.net        root at ddns.change-d.net
b3tze543nl.biz               ddns.change-d.net        root at ddns.change-d.net
b75xwam0lqgie.biz            ddns.change-d.net        root at ddns.change-d.net
bigy6uv1mi.biz               ddns.change-d.net        root at ddns.change-d.net
bikdvuqu.biz                 ddns.change-d.net        root at ddns.change-d.net
binhwyqa.biz                 ddns.change-d.net        root at ddns.change-d.net
bkh8yos3wzaf.biz             ddns.change-d.net        root at ddns.change-d.net
ca7tulomnb.biz               ddns.change-d.net        root at ddns.change-d.net
ch0g77jt0yy1j.biz            ddns.change-d.net        root at ddns.change-d.net
ckktp7oeqf.biz               ddns.change-d.net        root at ddns.change-d.net
d53wgl8b92.biz               ddns.change-d.net        root at ddns.change-d.net
d6bk1d8l.biz                 ddns.change-d.net        root at ddns.change-d.net
dh2hgfoj9icr.biz             ddns.change-d.net        root at ddns.change-d.net
e9nzlysrg.biz                ddns.change-d.net        root at ddns.change-d.net
ea8xmhpxf25c5.biz            ddns.change-d.net        root at ddns.change-d.net
eqbpdrdw.biz                 ddns.change-d.net        root at ddns.change-d.net
f3gypvppulw.biz              ddns.change-d.net        root at ddns.change-d.net
fb6tehfqi2.biz               ddns.change-d.net        root at ddns.change-d.net
fqyxneb6l.biz                ddns.change-d.net        root at ddns.change-d.net
fy97kew8pk.biz               ddns.change-d.net        root at ddns.change-d.net
gisvdvqy3641vu.biz           ddns.change-d.net        root at ddns.change-d.net
gjs2hisy.biz                 ddns.change-d.net        root at ddns.change-d.net
iyjh2rz8rx.biz               ddns.change-d.net        root at ddns.change-d.net
jpq-ejh8hv.biz               ddns.change-d.net        root at ddns.change-d.net
jqewko5aj.biz                ddns.change-d.net        root at ddns.change-d.net
nonsihki.biz                 ddns.change-d.net        root at ddns.change-d.net
sbqkddj7d.biz                ddns.change-d.net        root at ddns.change-d.net
t394h0n8.biz                 ddns.change-d.net        root at ddns.change-d.net
t5kc261q3h.biz               ddns.change-d.net        root at ddns.change-d.net
uf-x5nfw8wdi.biz             ddns.change-d.net        root at ddns.change-d.net
ufyfpjwe.biz                 ddns.change-d.net        root at ddns.change-d.net
uk16odrq5t.biz               ddns.change-d.net        root at ddns.change-d.net
up1p9g52lae3zlf.biz          ddns.change-d.net        root at ddns.change-d.net
xmqigiqp.biz                 ddns.change-d.net        root at ddns.change-d.net
xntrln75pt.biz               ddns.change-d.net        root at ddns.change-d.net
ycofiugn.biz                 ddns.change-d.net        root at ddns.change-d.net
ziweo0ygo.biz                ddns.change-d.net        root at ddns.change-d.net
znd3oirfli9d.biz             ddns.change-d.net        root at ddns.change-d.net
zwjrpiw4sw.biz               ddns.change-d.net        root at ddns.change-d.net
6cydue-g2of.biz              ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
9kt0jttt-fpq.biz             ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
a10odd4-tivxh.biz            ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
a5zfd-baxp4m.biz             ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
a8qudd-j6w8b.biz             ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
cc2d-vy2nkgz.biz             ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
ccc2f-cat083iv.biz           ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
fquff-d95ick.biz             ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
frkhdhd-ada4a.biz            ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
gfjgrond-mp8ij.biz           ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
sffrdj-trfw3z.biz            ns005.adcloud-ex.net     root at ns005.adcloud-ex.net
13vzg14p2.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
15wusl2wv.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
1id05amh5.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
1k025hgyc.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
1xs0hqrmm.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
21p38xsh6.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
3rkw36575.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
5j4hab2ai.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
5zfqfgig5.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
62z13nvs9.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
64eo82iv4.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
64oy4tqvf.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
67xhf4248.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
6r0l7xeoi.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
6r76anbtu.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
71mc06uv5.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
7k8uzg8dq.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
7pdan1xl1.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
7v8qep455.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
81frf700c.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
897k2dw3t.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
8aep84s5i.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
8f59yn6qw.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
8hvk7ryhn.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
8s6xyroby.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
9elklhldo.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
9gcb9ofow.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
9sissb4aj.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
9twvnhyj9.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
b8rh18t70.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
biwxpgrpo.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
c0is70jpa.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
cbrk0gmt1.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
ci4m3kwcb.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
errpd5km8.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
exzow6doh.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
f2qwqok62.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
f5r2luqec.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
fmox0bzix.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
fn39bvgld.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
fnl8a6wp5.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
fthtf410w.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
g3271lmur.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
gel9ftzhv.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
gf617nehv.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
gns2moz57.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
nj9vxw0q6.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
tc9a6uc9i.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
tomsj2v6l.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
trbhmwi1e.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
um5xfufnx.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
yky6eg68y.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
zzymkw3t6.biz                ns009.adcloud-ex.net     root at ns009.adcloud-ex.net
tluslgx3l2.biz               ns042.change-d.net       root at ns042.change-d.net
1g1rr64npp5.biz              ns043.change-d.net       root at ns043.change-d.net
5qa6bdoi.biz                 ns043.change-d.net       root at ns043.change-d.net
6zefpbcd6o.biz               ns043.change-d.net       root at ns043.change-d.net
72hsr4gw.biz                 ns043.change-d.net       root at ns043.change-d.net
73pu76fa.biz                 ns043.change-d.net       root at ns043.change-d.net
7e11sn3n.biz                 ns043.change-d.net       root at ns043.change-d.net
7h4m7zqqm.biz                ns043.change-d.net       root at ns043.change-d.net
7hl9sixt.biz                 ns043.change-d.net       root at ns043.change-d.net
7zknq7sei.biz                ns043.change-d.net       root at ns043.change-d.net
80a9lhl8tgx.biz              ns043.change-d.net       root at ns043.change-d.net
8uzr8ezdewy.biz              ns043.change-d.net       root at ns043.change-d.net
b7d4dj82.biz                 ns043.change-d.net       root at ns043.change-d.net
d5p64ch4.biz                 ns043.change-d.net       root at ns043.change-d.net
e66kbwuciz.biz               ns043.change-d.net       root at ns043.change-d.net
ebk5z2nc.biz                 ns043.change-d.net       root at ns043.change-d.net
ffe9pzas0.biz                ns043.change-d.net       root at ns043.change-d.net
fokc42o9ux.biz               ns043.change-d.net       root at ns043.change-d.net
7lrjtfqtgz.biz               ns071.change-d.net       root at ns071.change-d.net
9jiq7b7mo3.biz               ns071.change-d.net       root at ns071.change-d.net
a84tcfnphw.biz               ns071.change-d.net       root at ns071.change-d.net
bbfglz7jeb.biz               ns071.change-d.net       root at ns071.change-d.net
e66f6nnvhr.biz               ns071.change-d.net       root at ns071.change-d.net
f2f3isfx1l.biz               ns071.change-d.net       root at ns071.change-d.net
gelqlpulnw.biz               ns071.change-d.net       root at ns071.change-d.net
5d16f4yjuz.biz               ns099.change-d.net       root at ns099.change-d.net
e57ex9bdnu.biz               ns099.change-d.net       root at ns099.change-d.net
t6qn0339f0.biz               ns099.change-d.net       root at ns099.change-d.net
1dr2qf.biz                   ns1.1dr2qf.biz           root at 1dr2qf.biz
1i6c9j.biz                   ns1.1i6c9j.biz           root at 1i6c9j.biz
1rjdfq.biz                   ns1.1rjdfq.biz           root at 1rjdfq.biz
2sot5k.biz                   ns1.2sot5k.biz           root at 2sot5k.biz
5achn2.biz                   ns1.5achn2.biz           root at 5achn2.biz
60jipj.biz                   ns1.60jipj.biz           root at 60jipj.biz
68nk73.biz                   ns1.68nk73.biz           root at 68nk73.biz
6mfhnc.biz                   ns1.6mfhnc.biz           root at 6mfhnc.biz
80oaf2.biz                   ns1.80oaf2.biz           root at 80oaf2.biz
82ll2i.biz                   ns1.82ll2i.biz           root at 82ll2i.biz
9o9g0p.biz                   ns1.9o9g0p.biz           root at 9o9g0p.biz
b58tkm.biz                   ns1.b58tkm.biz           root at b58tkm.biz
bl97k96.biz                  ns1.bl97k96.biz          root at bl97k96.biz
cek2d1.biz                   ns1.cek2d1.biz           root at cek2d1.biz
e65pqm.biz                   ns1.e65pqm.biz           root at e65pqm.biz
xn--5nq25db5jvvvz23bwum.biz  ns1.expiredns.net        admin at xn--5nq25db5jvvvz23bwum.biz
xn--wbsy6n25nzt3b.biz        ns1.expiredns.net        admin at xn--wbsy6n25nzt3b.biz
febj3i.biz                   ns1.febj3i.biz           root at febj3i.biz
g034e28.biz                  ns1.g034e28.biz          root at g034e28.biz
ggjl28.biz                   ns1.ggjl28.biz           root at ggjl28.biz
sdeics.biz                   ns1.sdeics.biz           root at sdeics.biz



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