Dataverse - Login from IP not in the allow list

Requête originale, sans modification.

// Use static IP address or CIDR list specified in the
// NetworkAddresses watchlist template with tag "AllowDataverse"
let allowed_networks = MSBizAppsNetworkAddresses()
    | where Tags has "AllowDataverse"
    | summarize by IPSubnet;
let query_frequency = 1h;
let watchlist_entries_count = toscalar (allowed_networks
    | summarize count());
let dataverse_signin_activity = materialize(
    DataverseActivity
    | where watchlist_entries_count > 0
    | where TimeGenerated >= ago (query_frequency)
    | where Message == "UserSignIn" and isnotempty(ClientIp)
    | summarize FirstEvent = arg_min(TimeGenerated, *) by UserId, ClientIp, InstanceUrl
    );
let authorized_ip_addresses = dataverse_signin_activity
    | evaluate ipv4_lookup(allowed_networks, ClientIp, IPSubnet);
dataverse_signin_activity
| join kind=leftanti(authorized_ip_addresses) on ClientIp
| extend
    CloudAppId = int(32780),
    AccountName = tostring(split(UserId, '@')[0]),
    UPNSuffix = tostring(split(UserId, '@')[1])
| project
    FirstEvent,
    UserId,
    ClientIp,
    InstanceUrl,
    CloudAppId,
    AccountName,
    UPNSuffix