delegation-only and gtld-servers.net

[Martin Schröder]

Hi,
since yesterday I see this many times in our bind9 logs:
--------
Jan 26 10:59:59 foo named[928]: enforced delegation-only for 'com' (ns0.n=
ameserverrt.com/A/IN) from 192.52.178.30#53
Jan 26 10:59:59 foo named[928]: enforced delegation-only for 'com' (ns1.n=
amserverst.com/A/IN) from 192.52.178.30#53
--------
The originating ip differs, but always points back to
[a-m].gtld-servers.net

Are these ips faked or are the .net-servers really asking our
tiny little named for some .com-domain?

Best regards
        Martin
--=20
               Martin Schr=F6der, ms at artcom-gmbh.de
     ArtCom GmbH, Lise-Meitner-Str 5, 28359 Bremen, Germany
          Voice +49 421 20419-44 / Fax +49 421 20419-10
                    http://www.artcom-gmbh.de