Why it does not propogate ?

[Cricket Liu]

> Recently we changed the IP of our mail server but the new IP does not seem
> to propagate. We also moved this domain recently from Register.com to our
> own BIND server so the problem may be related to it (I don't have access
> anymore to the serial number the zone had had on Register.com but I think
> the one in the zone file we created has higher value).
>
> Is there any way to check why it does not propagate or predict how long it
> will take ?
>
> The host name is mail.ontero.com, the old IP is 209.157.66.9 and the new
one
> is 205.162.50.65.
>
> Two of the servers it did not propagate to are 206.86.8.69,
204.156.128.10.

You (or someone) made the mistake of registering the host
mail.ontero.com as a name server with the Registry.  Consequently,
the gTLD name servers are giving out answers for its address:

$ dig @a.gtld-servers.net. mail.ontero.com.

; <<>> DiG 9.1.1rc3 <<>> @a.gtld-servers.net. mail.ontero.com.
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24103
;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:
;mail.ontero.com.               IN      A

;; ANSWER SECTION:
mail.ontero.com.        172800  IN      A       209.157.66.9

You'll need to work with Register.com to either change or
delete the registration for mail.ontero.com.

cricket