@kiokoman Thank you Sir. You're correct.
I can see from here - https://www.calculator.net/ip-subnet-calculator.html?cclass=any&csubnet=29&cip=22.214.171.124&ctype=ipv4&printit=0&x=109&y=13 -
that the first usable is 126.96.36.199, which will be the ISP router (pfSense default gateway) set into the WAN interface. Can I rather use 188.8.131.52, the network address in a bid not to waste IP addresses?
Invariably, is this how to reuse IPs (network and broadcast addresses)?
Pardon me, it was indeed 184.108.40.206/29. And sorry, I'm trying to learn the IP addresses by heart. In this case, can I use 220.127.116.11 in the WAN as against 18.104.22.168, the first usable IP? I'm trying to maximize the IP addresses.