Laravel 5.5: Get all registered routes in Service provider

I have created a new Service provider and need to get all the registered routes in it. But Route::getRoutes()->getIterator() is returning null.

This is my full code,

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Route;
use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;
use Illuminate\Foundation\Application;
use Illuminate\Support\Facades\Request;

class ApiVersionServiceProvider extends ServiceProvider
{
    /**
     * This namespace is applied to your controller routes.
     *
     * In addition, it is set as the URL generator's root namespace.
     *
     * @var string
     */
    protected $namespace = 'App\Http\Controllers';

    public function register()
    {
        if (Request::instance()->is('api/v*')) {
            $routes = [];
            foreach (Route::getRoutes()->getIterator() as $route) {
                if ((strpos($route->uri, 'api') !== FALSE) AND basename($route->uri) == basename(Request::instance()->path())) {
                    $routes[] = $route->uri;
                }
            }
            dd($routes);
        }
    }
}

Is there an alternative way to attain routes here?

via Chebli Mohamed