diff --git a/src/ipv4.rs b/src/ipv4.rs
index 96db3ae..989463a 100644
--- a/src/ipv4.rs
+++ b/src/ipv4.rs
@@ -61,8 +61,8 @@ pub struct IPv4Range {
 }
 
 impl IPv4Range {
-    pub fn new(from: u32, to: u32, id_ignore: Option<Vec<u32>>) -> Self {
-        to = to.clamp(0, u32::max_value());
+    pub fn new(from: u32, to: u32, id_ignore: &mut Vec<u32>) -> Self {
+        let to = to.clamp(0, u32::max_value());
 
         if from >= to {
             panic!("Range size must be >= 1! from: {} >= to: {}", from, to);
@@ -71,7 +71,7 @@ impl IPv4Range {
         Self {
             id_start: from,
             id_end: to,
-            id_ignore: id_ignore.unwrap_or(Vec::new()),
+            id_ignore
         }
     }
 }
diff --git a/src/main.rs b/src/main.rs
index dfdfa57..bcaadd5 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,10 +6,8 @@ mod util;
 use clap::Parser;
 use cli::Args;
 
-use scanner::start_scan;
-
 fn main() {
-    let args = Args::parse();
+    let _args = Args::parse();
 
-    let _results = start_scan(args.port, args.threads as u32, None).unwrap();
+    //let _results = start_scan(args.port, args.threads as u32, None).unwrap();
 }
diff --git a/src/scanner.rs b/src/scanner.rs
index abcb893..0cdaee1 100644
--- a/src/scanner.rs
+++ b/src/scanner.rs
@@ -37,35 +37,50 @@ fn create_scan_thread(
     })
 }
 
-pub fn start_scan(
+fn create_scan_worker(
+    thread_id: u32,
+    ips_per_thread: u32,
+    target_port: u16,
+    ignorelist: &mut Vec<u32>,
+) -> JoinHandle<Vec<bool>> {
+    let (f, t) = (
+        (thread_id * ips_per_thread),
+        ((thread_id + 1) * ips_per_thread),
+    );
+    let range = IPv4Range::new(f, t, ignorelist);
+    create_scan_thread(thread_id, range, target_port)
+}
+
+fn start_scan(
     from: u32,
     to: u32,
     target_port: u16,
     num_threads: u32,
-    ignorelist: Option<Vec<u32>>,
+    ignorelist: Option<&mut Vec<u32>>,
 ) -> Result<()> {
     println!("Starting wwmap...");
-    //let ip_list = get_all(ignorelist)?;
 
     let ips_per_thread = (((to - from) as f32) / num_threads as f32) as u32;
-    let ips_left = num_threads * ips_per_thread; // how many ips we have left after the first threads
+    let ips_left = (to - from) - (num_threads * ips_per_thread); // how many ips we have left after the first threads
 
     // container for all of our threads
     let mut threads: Vec<JoinHandle<Vec<bool>>> = Vec::new();
 
     for thread_id in 0..num_threads {
-        // Calculate ranges & stuff
-        let (f, t) = (
-            (thread_id * ips_per_thread),
-            ((thread_id + 1) * ips_per_thread),
-        );
-        let range = IPv4Range::new(f, t, ignorelist);
+        let thread_ignorelist = ignorelist.unwrap_or(&mut Vec::new());
 
         // Create a worker
-        let worker = create_scan_thread(thread_id, range, target_port);
+        let worker = create_scan_worker(
+            thread_id,
+            ips_per_thread,
+            target_port,
+            thread_ignorelist
+        );
         threads.push(worker);
     }
 
+    if ips_left > 0 {}
+
     // container for all the results
     let mut result_list: Vec<bool> = Vec::new();