❔ ConfigureAwait(false) (IntelliCode Suggestion)

private async Task<List<DeviceInfo>> GetDevices(XDocument xDocument)
{
    List<DeviceInfo> deviceList = new List<DeviceInfo>();

    var itemElements = xDocument.Descendants("item");
    foreach (var itemElement in itemElements)
    {
        string? deviceName = itemElement.Element("device")?.Value;
        string? host = itemElement.Element("host")?.Value;
        string? objId = itemElement.Element("objid")?.Value;

        if (IPAddress.TryParse(host, out IPAddress? ipAddress) && ipAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
        {
            try
            {
                var hostEntry = await Dns.GetHostEntryAsync(ipAddress);
                host = hostEntry.HostName;
            }
            catch
            {
                _logger.LogError($"There is an error occured while resolving {ipAddress}: {host}");
            }
        }

        // remove all possible domains from FQDNs to get hostnames even if they include dots
        if (_optionsAccessor.PossibleOccuringDomains is not null && !string.IsNullOrEmpty(host))
        {
            deviceName = host;
            _optionsAccessor.PossibleOccuringDomains.ForEach(item =>
            {
                deviceName = deviceName.Replace(item, string.Empty);
            });
        }

        deviceList.Add(new DeviceInfo { HostName = deviceName, FQDN = host, ObjID = objId });
    }
    return deviceList;
}