If Same Item Multiple Boards (SIMB) isn’t loading on your corporate network, your company’s firewall or monday.com Enterprise IP restrictions are likely blocking it. This guide gives your IT team everything they need to authorize SIMB’s domains and static egress IP addresses so the app loads and syncs reliably within your secured environment.
Symptoms
If you’re experiencing any of the following, a network restriction is the most likely cause:
- A red circle with a slash icon appears on the SIMB tab or app view
- The app view loads as a blank page or fails to initialize
- SIMB works normally on personal or home networks but not on corporate WiFi or VPN
Why This Happens
SIMB must communicate with external servers in real time to sync items between boards. Enterprise network security policies often block this traffic by default. There are two distinct causes:
- Local corporate firewalls — Your internal IT infrastructure may block external app domains. If your firewall prevents SIMB’s outbound connections, the app cannot load its interface or reach its sync database.
- monday.com Enterprise IP Address Restrictions — To meet evolving SOC2 and HIPAA compliance standards, monday.com Enterprise accounts can enforce strict IP Address Restriction protocols that require explicit whitelisting of all external API and webhook traffic. SIMB uses static egress IPs so your IT team can set permanent, reliable rules.
Connection failures are almost always a network configuration requirement — not a bug in the app. Applying the whitelists below restores full functionality.
Solution Part 1: Domain Whitelisting
Ask your IT team to allow outbound HTTPS (port 443) traffic to the following domains. This allows SIMB to load its interface and communicate with its sync database from within your network:
| Domain | Purpose |
|---|
https://simb-frontend-prod-nxcub.ondigitalocean.app/ | Main application interface |
https://simb-prod-api-qgobi.ondigitalocean.app/ | API communication and sync |
*.pioneera.io | Support portal and documentation |
*.monday.com | monday.com platform (likely already allowed) |
Solution Part 2: IP Address Whitelist
If your organization uses monday.com Enterprise with IP Address Restriction enabled, you must manually add SIMB’s static egress IPs to your monday.com Allowed List. This permits monday.com to accept incoming sync requests from SIMB’s servers.
| Service | IP Addresses |
|---|
| Main backend | 139.59.154.242, 46.101.192.58 |
| Frontend | 164.92.224.10, 142.93.169.78 |
| Subitem Service | 139.59.210.52, 142.93.96.70 |
| Item Service | 104.248.241.183, 64.226.67.137 |
| Utils Service | 46.101.178.229, 138.197.184.163 |
| Recipe Service | 159.89.5.105, 188.166.161.207 |
| Sync setup Service | 188.166.167.153, 142.93.98.15 |
| Pulse service | 64.226.116.104, 207.154.199.92 |
- Log in to monday.com as an Admin.
- Navigate to Administration → Security → IP address restriction.
- Click Add IP address, enter each IP from the table above, and set its status to Active.
Template Email for Your IT Team
Copy and send the following message to your IT department to request the necessary whitelisting:
Subject: Whitelist & IP Authorization Request: monday.com App — Same Item Multiple Boards
Hi [IT Team],
We use a monday.com Marketplace app called "Same Item Multiple Boards." To ensure the
app functions correctly within our security perimeter, we need to authorize its domains
and static IP addresses.
────────────────────────────────────────────
1. Corporate Firewall / Proxy (Domain Whitelisting)
────────────────────────────────────────────
Please whitelist the following domains for HTTPS (Port 443) traffic:
https://simb-frontend-prod-nxcub.ondigitalocean.app/
https://simb-prod-api-qgobi.ondigitalocean.app/
*.pioneera.io
────────────────────────────────────────────
2. monday.com Enterprise Security (IP Authorization)
────────────────────────────────────────────
If we have IP Address Restrictions enabled in our monday.com Enterprise account,
please add the following static egress IPs to the "Allowed List" in the monday.com
Admin Security settings:
Main backend: 139.59.154.242, 46.101.192.58
Frontend: 164.92.224.10, 142.93.169.78
Subitem: 139.59.210.52, 142.93.96.70
Item Service: 104.248.241.183, 64.226.67.137
Utils: 46.101.178.229, 138.197.184.163
Recipe: 159.89.5.105, 188.166.161.207
Sync setup: 188.166.167.153, 142.93.98.15
Pulse: 64.226.116.104, 207.154.199.92
These configurations are required for the app to load within our boards and to sync
item data in real time. As of 2025/2026, these static IPs are necessary to comply with
SOC2/HIPAA security handshakes between external Marketplace apps and our monday.com
Enterprise environment.
Thank you!
Verification
After your IT team confirms the whitelist is applied:
- Clear your browser cache or open a private/incognito window.
- Navigate to your monday.com board.
- Open the SIMB app view — it should load and display normally.
- If the issue persists, try a different browser to rule out cached DNS entries.
If SIMB still doesn’t load after whitelisting, confirm with IT that the rules apply to your specific network segment or VPN profile. Some organizations route VPN traffic through a separate proxy that requires independent configuration.
Still Having Issues?
If whitelisting doesn’t resolve the problem:
- Ask IT to verify the whitelist applies to your specific VPN or network segment
- Check whether your organization uses a web proxy requiring separate configuration
- Try accessing monday.com from outside the corporate network to isolate whether it’s a network-only issue
Contact the Pioneera support team at support@pioneera.io and we’ll help troubleshoot with your IT team directly.