curl --request GET \
  --url https://api.example.com/v1/VoipCarriers/{voip_carrier_sid}

{
  "account_sid": "5f8e8f60-4771-44cb-92a6-94ea66df0450",
  "application_sid": "98acd50a-9f25-42a6-8dbf-aadb400ddcf0",
  "created_at": "2021-05-18T22:18:36.000Z",
  "diversion": null,
  "e164_leading_plus": 1,
  "inbound_auth_password": null,
  "inbound_auth_username": null,
  "is_active": 1,
  "name": "Twilio",
  "register_password": "your-twilio-credential-password",
  "register_sip_realm": null,
  "register_username": "your-twilio-credential-username",
  "requires_register": 0,
  "service_provider_sid": null,
  "tech_prefix": null,
  "voip_carrier_sid": "5647eeab-c5ee-4d4b-ac3a-8aa5605f71f5"
}