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Cisco WRVS4400N

Was wondering if i can add a second ip address to this router if not what router would allow me to do that? I am running out of IP addressed and have added a super-scope but it doesn't seem to be issuing addresses? Thanks
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Darr247
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In what way, exactly, are you, "running out of IP addressed" ?
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Its a local YMCA and with all existing devices and computers when a large number of folks come in then i run out of IP addresses.
You have added a superscope to what??  Most commodity routers don't accomplish that .. in those terms.
The WNRs4400n is fairly typical.  The manual says:
This number cannot be greater than the available host addresses in the
subnet (for example, 253 for /24 subnet).
So you could have a larger subnet (such as /23 and double the number of addresses.  Unfortunately the manual isn't crystal clear that you can have a subnet that's larger than /24 but it's certainly worth trying.  Presumably if you can set it, it will work.

Also, in the situation you describe, you should check the lease time for DHCP leases.  With a lot of transient devices coming in and going out, there is no reason to keep leases for devices that have "left the building".  I would suggest 120 minutes.  This way, when a device leaves the lease won't be renewed and the IP address will be back in the available pool.
An IPv4 /23 would be a subnet mask of 255.255.254.0 by the way.
/22 = 255.255.252.0 -- that would give ~4x as many addresses as a /24 subnet mask (255.255.255.0)
Are you using wireless AP's?
If so how many?
I can't see this router handling a lot of wireless connectivity without separate AP's.
Adding VLANs would be a way to add IP addresses if you also want or can use separation of the subnets one from the other - which you didn't mention.  But that adds complexities which you may not be prepared to deal with.  For example, if you wanted to connect between the VLANS - which rather defeats the purpose.
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Heres what i have now

Server 2012 R2- hands out DHCP to all devices.
Few misc extenders and aps that are in the network.

Need to increase number of IP addresses available. I have tried changing the lease time to 30 minutes and adding a superscope to the Server. None have worked. Need a somewhat cheap solution as they have not alot of money to spend.
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hypercube
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What i mean is the new superscope pool wasnt able to browse internet.
This suggests that the gateway isn't working well with those hosts.  
If the gateway subnet mask remains as it was then a packet destined for the internet will reach the gateway OK one might assume.'
However, the return path would be unknown to the gateway so no return.

All devices have to have the new subnet mask.