Probe IPs & regions
Vantaj runs checks from dedicated probe servers in several regions. If the endpoints you monitor are behind a firewall, VPN, or IP allowlist, you'll need to permit traffic from these probe IPs so the checks can get through.
Find the current list under Settings → Monitoring Probe IPs.
Regions
Checks currently run from three regions:
| Region | Location |
|---|---|
| US East | North America |
| Europe | Western Europe |
| Asia Pacific | Southeast Asia |
Running from multiple regions means a check is only treated as a real outage when it fails broadly, not because of a single bad network path. Response-time charts on a monitor's detail page break results down by region.
Allowlisting the IPs
- Open Settings → Monitoring Probe IPs
- Copy the IP for each region (or Copy all IPs)
- Add them to your firewall allowlist, security group, or ACL as inbound rules for the endpoints you're monitoring
Keeping the list current automatically
Probe IPs can change when we deploy new infrastructure. Instead of copying them by hand, you can poll the live list:
GET https://app.vantaj.co/api/probe-ips
For tools that expect one IP per line — Palo Alto External Dynamic Lists, iptables scripts, and similar — request the plain-text format:
GET https://app.vantaj.co/api/probe-ips?format=text
Point your firewall automation at one of these endpoints to keep allowlists in sync as IPs change.
Heartbeats don't need this
Allowlisting only applies to checks Vantaj makes to your endpoints (HTTP, ping, port). Heartbeats work the other way around — your job calls Vantaj — so there's nothing to allowlist for them.