Help resolve 24.67.xx.xx

[Robert King]

Hi All:
 In the last few days, my AIX machine at school has been unable to resolve
reverse addresses for 24.67.xx.xx. All other addresses such as
24.64.xx.xx and 24.65.xx.xx are fine. What is strange is that
they all authoritative by ns1.home.net and ns2.home.net.
If I am from Shaw, I have no problem resolving these. I can
ping both ns1.home.net and ns2.home.net fine from school.
Can any one help shed some light? Below are a few failed attempts
to resolve 24.67. The last query is sucessful for 24.64.

Thanks in advance for any help.
############ pings are fine
#ping -c 2 ns1.home.net
PING ns1.home.net: (24.0.0.27): 56 data bytes
64 bytes from 24.0.0.27: icmp_seq=0 ttl=244 time=158 ms
64 bytes from 24.0.0.27: icmp_seq=1 ttl=244 time=148 ms

----ns1.home.net PING Statistics----
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 148/153/158 ms
#ping -c 2 ns2.home.net
PING ns2.home.net: (24.2.0.27): 56 data bytes
64 bytes from 24.2.0.27: icmp_seq=0 ttl=240 time=203 ms
64 bytes from 24.2.0.27: icmp_seq=1 ttl=240 time=178 ms

----ns2.home.net PING Statistics----
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 178/190/203 ms                      

############# failures trying to resolve 24.67
#nslookup -type=ptr 40.114.67.24.in-addr.arpa
Server:  localhost
Address:  127.0.0.1

*** named.domain.ca can't find 40.114.67.24.in-addr.arpa:Non-existent host/domain
#nslookup -type=ptr 40.114.67.24.in-addr.arpa 24.0.0.27
Server:  ns1.home.net
Address:  24.0.0.27

*** ns1.home.net can't find 40.114.67.24.in-addr.arpa:Non-existent host/domain
#nslookup -type=ptr 40.114.67.24.in-addr.arpa 24.2.0.27
Server:  ns2.home.net
Address:  24.2.0.27

*** ns2.home.net can't find 40.114.67.24.in-addr.arpa:Non-existent host/domain
#nslookup
Default Server:  localhost
Address:  127.0.0.1

> lserver 24.0.0.27
Default Server:  ns1.home.net
Address:  24.0.0.27
################## 24.64 has no problem.
> 24.64.104.81
Server:  ns1.home.net
Address:  24.0.0.27

Name:    24.64.104.81.ab.wave.home.com
Address:  24.64.104.81

                                         
> 24.67.114.40
Server:  ns1.home.net
Address:  24.0.0.27


*** ns1.home.net can't find 24.67.114.40:Server failed