As previously mentioned, you're not breaking any rules and depending on the circumstances it may be a perfectly correct thing to do. The person with the "problem" may be miffed that a reverse lookup dosn't resolve to your hostname even though you have an A record pointing at the IP. Perhaps you should see what the PTR record for the IP address is. They may want you to convert your A record to a CNAME for the hostname the reverse lookup resolves to so that the A -> PTR mapping is 1 to 1 and all other forward name resolutions are CNAMEs. This may suit both of you fine or it may be a really bad idea depending on circumstances. Jono Stu Fleming <stewart(a)wic.co.nz> 22/11/2005 08:02 PM To: nznog(a)list.waikato.ac.nz cc: Subject: [nznog] DNS serving IPs outside controlled range I have a...friend, let's say...who operates a DNS server at a small ISP. In a few of the zone files, there are A records that resolve to IP addresses outside of the Class C that my..friend...controls. My friend has been told that this is "against the rules" and that it is "causing problems". Questions: - is resolving an A record outwith the delegated IP range "against the rules"? - if so, is there any documentation of the rules? - what potential problems could this cause to the network that contains the IP address to which the A records point? Thanks for any advice. Regards, Stu _______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog This email may contain privileged/confidential information. You may not copy or disclose this email to anyone without the written permission of the sender. If you have received this email in error please kindly delete this message and notify the sender. Opinions expressed in this email are those of the sender and not necessarily the opinions of the employer. This email and any attached files should be scanned to detect viruses. No liability will be accepted by the employer for loss or damage (whether caused by negligence or not) as a result of email transmission.