<div dir="ltr"><div>[ Classification Level: <font color="blue">GENERAL BUSINESS</font> ]</div><br class="cursAfter"><div><br></div>That chapter doesn't show any PTR records, for the reverse zones of any *public* address range, pointing back to a "localhost" name. It only shows a PTR record in the reverse zone for the <span style="color:rgb(51,51,51);font-family:guardian-text-oreilly,Helvetica,sans-serif;font-variant-ligatures:none">127.0.0/24 private range, which is what enables a reverse lookup for 127.0.0.1. Your ISP isn't (or shouldn't be) hosting reverse zones for any range under the 127/8 private block, on your behalf. That's your responsibility; hence the term "private". </span><div><font color="#333333" face="guardian-text-oreilly, Helvetica, sans-serif"><span style="font-variant-ligatures:none"><br></span></font></div><div><span style="color:rgb(51,51,51);font-family:guardian-text-oreilly,Helvetica,sans-serif;font-variant-ligatures:none"></span><font color="#333333" face="guardian-text-oreilly, Helvetica, sans-serif"><span style="font-variant-ligatures:none">And, as Tony mentioned, these days it's highly questionable whether "localhost" entries in *any* zone, forward or reverse, serve any useful purpose, and may actually cause harm.</span></font></div><div><font color="#333333" face="guardian-text-oreilly, Helvetica, sans-serif"><span style="font-variant-ligatures:none"><br></span></font></div><div><font color="#333333" face="guardian-text-oreilly, Helvetica, sans-serif"><span style="font-variant-ligatures:none"> - Kevin<br></span></font><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 21, 2021 at 12:48 PM <<a href="mailto:techlists@phpcoderusa.com">techlists@phpcoderusa.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
This book : <br>
<a href="https://www.oreilly.com/library/view/dns-and-bind/0596100574/ch04.html" rel="noreferrer" target="_blank">https://www.oreilly.com/library/view/dns-and-bind/0596100574/ch04.html</a> <br>
says I should manage the localhost within my zone (SOA) and reverse <br>
lookup / PTR.<br>
<br>
I do not manage my revers lookup / PTR the IP owner does that.<br>
<br>
Any thoughts on managing the localhost within the zone file and PTR?<br>
<br>
Thanks!!<br>
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