Short answer: I just like doing it. Long answer: It allows me to create as many hosts on a segregated domain instead of making my company DNS zone 3000 records long.
-----Original Message----- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Fred Sent: Tuesday, December 09, 2014 4:36 PM To: nanog@nanog.org Subject: Re: ASN Domain for rDNS I'd say this is mostly for whitelabelling reason rather than a technical one? Keefe John: > I've been seeing more and more carriers(and even small ISPs) using > asXXXX.net as their domain for rDNS on IP space. What are the pros > and cons for doing this versus using your primary business domain name? > > Keefe John