curl --request GET \
  --url https://api.itellico.ai/v1/accounts/{account_id}/phone-numbers/{phone_number_id} \
  --header 'X-API-Key: <api-key>'

{
  "id": "<string>",
  "number": "<string>",
  "sip_trunk": {
    "id": "<string>",
    "name": "<string>"
  },
  "inbound_agent": {
    "id": "<string>",
    "name": "<string>",
    "avatar": "<string>"
  },
  "spam_data": {},
  "friendly_name": "<string>",
  "tellows_data": {}
}