What are these entries in the log file - " query: . IN NS +"?

[Tony Toews [MVP]]

"Tony Toews [MVP]" <ttoews at telusplanet.net> wrote:

>26-Jan-2009 14:28:24.004 client 76.9.16.171#23101: query: . IN NS +
>26-Jan-2009 14:28:58.254 client 63.217.28.226#28035: query: . IN NS +
>26-Jan-2009 14:29:00.691 client 63.217.28.226#35549: query: . IN NS +
>26-Jan-2009 14:29:26.332 client 76.9.16.171#19817: query: . IN NS +

FWIW In the last 28 hours I have the following alleged IP addresses and count in my
log file.

Real lookups	1665
204.15.80.50	4
3.217.28.226	1144
4.57.246.146	9541
6.9.16.171	577
63.217.28.226	1463
64.57.246.146	35163
65.173.218.96	1
67.192.144.0	1488
7.192.144.0	12054
76.9.16.171	1033

Tony
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