iRule to redirect to URLs

Do you want to redirecct or to forward to internal servers with such hostnames?

if you want to redirect, this code may work. you can optimize it with elseif:

when HTTP_REQUEST { 
    if { ( [IP::addr [IP::client_addr] equals 10.50.1.0/24] ) } { 
    HTTP::redirect "http://abc1.test.com"
    } elseif { ( [IP::addr [IP::client_addr] equals 10.60.1.0/24] ) } {
        HTTP::redirect "http://abc2.test.com"
    } elseif { ( [IP::addr [IP::client_addr] equals 10.70.1.0/24] ) } {
        HTTP::redirect "http://abc3.test.com"
    }
}

You could also accomplish this without any iRule by using a LTM policy. This would be the preferred method. For more info on LTM policies see:

https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/local-traffic-policies-getting-started-12-1-0/1.html

You should use a more optimized solution with "switch" instead of "if"

https://devcentral.f5.com/articles/irules-optimization-101-01-if-elseif-and-switch

Code
   when CLIENT_ACCEPTED { 
    switch -glob [IP::client_addr] { 
        "192.168.5.*" { pool pool1 } 
        "192.168.6.*" { pool pool2 } 
        "192.168.7.*" { pool pool3 } 
        default { pool default_pool }
    }  
  }

Thanks all for your help, this is what finally worked. Notice the placement of the CIDR notation. Also since we use route domains, it needed to be defined by the %1.

when HTTP_REQUEST { if { ( [IP::addr [IP::client_addr]/24 equals 10.50.1.0%1] ) } { HTTP::redirect "http://abc1.test.com"; } elseif { ( [IP::addr [IP::client_addr]/24 equals 10.60.1.0%1] ) } { HTTP::redirect "http://abc2.test.com"; } elseif { ( [IP::addr [IP::client_addr]/24 equals 10.70.1.0%1] ) } { HTTP::redirect "http://abc3.test.com"; } }