rDNS Delegation

HI pflog.  In order to proceed with the request our IP Engineers will need the following information:

1.Your full name

2. Account number

3. IP Scope

4. Server information (ex: ns.yourdomain.com)

Please send it to me via private message and I will contact the appropriate department.

Thank You

Hi Jon,

Just to be clear, the way this is being done is via RFC 2317, right? I want to make sure I set my bind configuration up ahead of time.

Thanks!

I sent you a PM with the info, and my nameserver is setup and ready to go!

Hi  John,

Is there some problem with the information I've provided? I see others who requested the same changes AFTER me have theirs setup, but mine is still not active.

Please let me know if there is anything I need to do on my end.

Regards,

Josh

Hello!

Comcast_John is pretty solid with stuff, especially the rDNS. Actaully, I am pretty sure he is just a bot, but I could be wrong :).

Anyways, is it possible that you are looking for a different reverse zone naming format?

The classless rDNS zone naming is ISP dependent. For me, Comcast used a zone name of  :

28-208.12.11.10.in-addr-arpa

For an ip block of 10.11.12.208/28

Take care!

John

Hi John, thanks for the reply 🙂

I'm fairly sure I have it setup correctly on my end. If I do a dig +trace:

dig ptr +trace 1895.73.xxx.yyy.in-addr.arpa

It shows comcast's NS not mine and the PTR record doesn't match what I have on my end:

189.73.yyy.xxx.in-addr.arpa. 3600 IN     PTR     yyy-xxx-73-189-Sacramento.hfc.comcastbusiness.net.

So I think it's not even setup on their end, but it's been a while since I've done an RFC2317 setup. What should I be querying my local nameserver for to confirm it's working? I thought it would be this which works:

$ dig +short ptr 189.184/29.73.xxx.yyy.in-addr.arpa @ns.pflog.net
test.MYDOMAINHERE.net.

The zone's origin looks like this:

$ORIGIN 184/29.73.xxx.yyy.in-addr.arpa.

Should that be this instead?

$ORIGIN 184-29.73.xxx.yyy.in-addr.arpa.

Even if I had things wrong, I'd expect with a dig +trace to get an NXDOMAIN if it were setup already and my NS was misconfigured, but I'm getting a valid PTR response, just the wrong (old) one.

Thanks!

Hello!

DNS is not my forte, but maybe this info will help.

My rDNS is delegated and working. My static ip block is yyy.xxx.50.208/28. When I do a reverse lookup on yyy.xxx.50.209, I get the following response :

209.50.xxx.yyy.in-addr.arpa. CNAME IN 3600 71ms 209.28-208.50.xxx.yyy.in-addr.arpa.

Trying a reverse lookup on the network/broadcast IP will return a PTR record, like :

208.50.xxx.yyy.in-addr.arpa. PTR IN 3600 83ms yyy-xxx-50-208-static.hfc.comcastbusiness.net.

It kind of looks like it might not be setup, but when it is, my guess is that the zone name might be :

$ORIGIN 29-184.73.xxx.yyy.in-addr.arpa.

Take care!

John