netbox-community-netbox/netbox/templates/circuits/circuit_delete.html

{% extends 'utilities/confirmation_form.html' %}
{% load form_helpers %}

{% block title %}Delete {{ obj.provider }} - {{ obj.cid }}?{% endblock %}

{% block message %}
    <p>Are you sure you want to delete circuit {{ obj }} from {{ obj.site }}?</p>
{% endblock %}