blog.tetti.de – Man sieht nur, was man weiß

Hat jemand eine Idee, warum der Nameserver/Resolver der Firma Telefónica Germany so seltsame Nameserveranfragen generiert?

19-Oct-2011 15:12:25.248 client 62.53.231.235#37270: query: blOG.tETTI.de IN A -
19-Oct-2011 16:34:21.393 client 62.53.231.235#23650: query: WWw.tetTI.de IN A -
19-Oct-2011 18:21:37.364 client 62.53.231.237#36926: query: www.tETTi.de IN A -
19-Oct-2011 18:35:55.424 client 62.53.231.24#63080: query: WWW.TETtI.De IN A -
19-Oct-2011 18:46:09.963 client 62.53.231.239#55392: query: Www.TETTi.dE IN A -
19-Oct-2011 19:02:39.019 client 62.53.231.14#23971: query: wWw.tEttI.de IN A -
19-Oct-2011 19:03:03.215 client 62.53.231.235#47299: query: wwW.teTti.DE IN A -
19-Oct-2011 19:43:50.375 client 62.53.231.203#31866: query: blOG.TettI.de IN A -
19-Oct-2011 20:42:27.696 client 62.53.231.24#65371: query: blOG.teTtI.de IN A -
19-Oct-2011 21:32:22.039 client 62.53.231.239#31248: query: WWW.tEtTi.dE IN A -
19-Oct-2011 22:43:26.277 client 62.53.231.235#22203: query: WwW.tetTi.DE IN A -
20-Oct-2011 11:31:08.245 client 62.53.231.203#51796: query: wWW.TeTti.de IN A -
20-Oct-2011 12:48:34.531 client 62.53.231.205#16623: query: wWw.TettI.De IN AAAA -
20-Oct-2011 12:48:34.624 client 62.53.231.237#62620: query: WWW.TeTti.De IN A -
20-Oct-2011 16:14:04.261 client 62.53.231.14#38456: query: WWW.TeTtI.dE IN A -

Man achte auf die Groß- und Kleinschreibung der Domainnamen www.tetti.de bzw. blog.tetti.de. Kodieren die irgend welche Nachrichten in das Kleinschreibebit?