Those aren't glue records for a .com zone. Those glue records are for <a href="http://mydots.net">mydots.net</a>, the NS' just so happen to be residing in the .com zone. The name servers don't have to be in the same zones as the actual domain name. On a side note, the gtld's cover .com as well.<br>
<br><div class="gmail_quote">On Fri, Jul 1, 2011 at 2:31 PM, PANG J. <span dir="ltr"><<a href="mailto:pangj@xuite.net">pangj@xuite.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<a href="http://h.gtld-servers.net" target="_blank">h.gtld-servers.net</a> is one of the net domain's NS servers.<br>
As the info below:<br>
<br>
$ dig <a href="http://mydots.net" target="_blank">mydots.net</a> @<a href="http://h.gtld-servers.net" target="_blank">h.gtld-servers.net</a><br>
<br>
; <<>> DiG 9.4.2-P2.1 <<>> <a href="http://mydots.net" target="_blank">mydots.net</a> @<a href="http://h.gtld-servers.net" target="_blank">h.gtld-servers.net</a><br>
;; global options: printcmd<br>
;; Got answer:<br>
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57902<br>
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2<br>
;; WARNING: recursion requested but not available<br>
<br>
;; QUESTION SECTION:<br>
;<a href="http://mydots.net" target="_blank">mydots.net</a>. IN A<br>
<br>
;; AUTHORITY SECTION:<br>
<a href="http://mydots.net" target="_blank">mydots.net</a>. 172800 IN NS <a href="http://ns1.dnsbed.com" target="_blank">ns1.dnsbed.com</a>.<br>
<a href="http://mydots.net" target="_blank">mydots.net</a>. 172800 IN NS <a href="http://ns2.dnsbed.com" target="_blank">ns2.dnsbed.com</a>.<br>
<br>
;; ADDITIONAL SECTION:<br>
<a href="http://ns1.dnsbed.com" target="_blank">ns1.dnsbed.com</a>. 172800 IN A 74.117.233.4<br>
<a href="http://ns2.dnsbed.com" target="_blank">ns2.dnsbed.com</a>. 172800 IN A 204.152.196.108<br>
<br>
;; Query time: 279 msec<br>
;; SERVER: 192.54.112.30#53(192.54.112.<u></u>30)<br>
;; WHEN: Sat Jul 2 03:25:41 2011<br>
;; MSG SIZE rcvd: 106<br>
<br>
<br>
Why the "net" zone has the glue for the servers which are in the "com" zone?<br>
<br>
Thank you.<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Jonathan French<div><a href="mailto:pikel.m95@gmail.com" target="_blank">pikel.m95@gmail.com</a></div><br>