Some domains don't resolve

[Anapa-CB]

DNSmasq don't resolve domain free.anport.ru and some tohers.

# cat /etc/resolv.conf
domain cbanapa.dnsalias.org
nameserver 127.0.0.1
nameserver 192.168.1.1
nameserver 31.15.88.2
nameserver 31.15.88.3
nameserver 31.15.88.2
nameserver 83.239.0.202
nameserver 8.8.8.8
nameserver 208.67.220.222
# nslookup free.anport.ru
Server:		127.0.0.1
Address:	127.0.0.1#53

*** Can't find free.anport.ru: No answer

# nslookup free.anport.ru 8.8.8.8
Server:		8.8.8.8
Address:	8.8.8.8#53

Non-authoritative answer:
Name:	free.anport.ru
Address: 10.140.10.107

Is this because of domain's IP (10.140.10.107 is in ISP's private subnet)?

[Guest]

as it was resloved in http://forum.pfsense.org/index.php/topic,42913.0.html dnsmasq thought it's attack " dnsmasq[5522]: possible DNS-rebind attack detected: free.anport.ru"
I added an option "rebind-domain-ok=free.anport.ru" to DNSmasq advanced config and it's all right now.