domain name system: iptables does not work when applied to 2 subnets

This command successfully forces OpenDNS on my subnet 1:

iptables -t nat -I PREROUTING -i br0 -m iprange --src-range 192.168.1.10-192.168.1.69 -p udp --dport 53 -j DNAT --to 208.67.222.222
iptables -t nat -I PREROUTING -i br0 -m iprange --src-range 192.168.1.10-192.168.1.69 -p tcp --dport 53 -j DNAT --to 208.67.222.222

However, when I added additional commands for subnet 2, it does not apply on subnet 2.

iptables -t nat -I PREROUTING -i br0 -m iprange --src-range 192.168.1.10-192.168.1.69 -p udp --dport 53 -j DNAT --to 208.67.222.222
iptables -t nat -I PREROUTING -i br0 -m iprange --src-range 192.168.1.10-192.168.1.69 -p tcp --dport 53 -j DNAT --to 208.67.222.222
iptables -t nat -I PREROUTING -i br1 -m iprange --src-range 192.168.2.1-192.168.2.253 -p udp --dport 53 -j DNAT --to 208.67.222.222
iptables -t nat -I PREROUTING -i br1 -m iprange --src-range 192.168.2.1-192.168.2.253 -p tcp --dport 53 -j DNAT --to 208.67.222.222