currently I am using this URL in Graph API Explorer:
v16.0/{WhatsApp Business Account ID}?fields=subscribed_apps,phone_numbers{verified_name,code_verification_status,display_phone_number,quality_score,platform_type,throughput,status,name_status,certificate,account_mode,message_qrdls.limit(10){code,prefilled_message,deep_link_url,qr_image_url},is_preverified_number,messaging_limit_tier,new_name_status,search_visibility,is_pin_enabled}
but compared that between a Live Number and Facebook Test Number, I see no difference and no way to tell which is the test number from Graph API alone, so how does one use Graph API to identify the Number Type?