🚨 Multiple Vercel Domains Fail on Orange Morocco ISP but Work via Germany & Spain VPN

[nfdcopilot-5305 (ADALIGO)]

All Vercel Custom Domains Only Work Through VPN (Germany/Spain) – Possible ISP Routing or DNS Issue

Hello Vercel Community ,

I’m experiencing a very unusual issue affecting all of my Vercel-hosted custom domains.

Environment

• Hosting: Vercel

• Framework: Next.js

• Deployment Status: Successful

• Domain Status: Valid Configuration

• SSL: Active

• ISP: Orange

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What Works

• All deployments complete successfully.

• Every .vercel.app deployment URL works perfectly.

• Vercel Dashboard shows Valid Configuration for every custom domain.

• Domains are correctly attached to their respective projects.

• When connected to a VPN (Germany or Spain), every custom domain loads instantly.

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What Doesn’t Work

On my normal Orange internet connection:

• None of my custom domains load.

• The issue affects multiple Vercel domains simultaneously.

• The browser eventually times out or cannot reach the website.

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Troubleshooting Already Performed

I have already tried all of the following:

• Restarted my router

• Forgot and reconnected to Wi-Fi

• Flushed local DNS (ipconfig /flushdns)

• Restarted the computer

• Tested different browsers

• Verified the Vercel configuration

• Confirmed deployments are healthy

• Confirmed .vercel.app URLs work

• Tested with VPN

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Important Finding

As soon as I connect through a VPN:

• Germany → Works

• Spain (Server 1) → Works

• Spain (Server 2) → Works

Disconnecting the VPN immediately causes all custom domains to stop working again.

This strongly suggests the websites themselves are online and reachable.

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My Current Conclusion

Because:

• All domains fail simultaneously

• .vercel.app works

• VPN works immediately

• Vercel reports Valid Configuration

I suspect this may be related to:

• ISP routing

• DNS propagation/caching

• Peering between Orange and the Vercel Edge Network

rather than a deployment or application issue.

---

Questions

Has anyone experienced something similar?

Could a Vercel team member please verify whether there are any routing, DNS, or edge network issues affecting connectivity from certain ISPs?

If there are any additional diagnostic commands or logs that would help, I’m happy to provide them.

Thank you very much for your time and assistance!

[system]

The domain troubleshooting guide can help with most custom domain configuration issues. You might be able to use that guide to solve it before a human is available to help you. Then you can come back here and share the answer for bonus points.

Troubleshooting domains

[ouhraichconsulting-6 (Hassan)]

Hello, I’m experiencing the exact same issue unfortunately

Environment:

• Project: mre-agadir (mre-agadir-jade.vercel.app)
• Custom domains: mre-a-agadir.ma and www.mre-a-agadir.ma
• Apex A record: 216.198.79.1 (same IP reported in this thread)
• Framework: Next.js, deployed successfully, domains show “Valid Configuration”
• Plan: Hobby

What works:

• mre-agadir-jade.vercel.app loads instantly, no issue
• The custom domain loads perfectly when using a VPN (tested via Germany)

What doesn’t work:

• Both mre-a-agadir.ma and www.mre-a-agadir.ma consistently time out when accessed
  directly from Morocco
• Confirmed across multiple ISPs (home Wi-Fi, inwi mobile data, other operators)
  and multiple devices (phones + computers)
• Confirmed even after manually setting Google Public DNS (8.8.8.8) on a mobile
  device — same timeout, which rules out local ISP DNS resolver caching as the
  cause

This looks like a routing/peering issue between Vercel’s edge network and
Moroccan ISPs (Orange, Meditelecom, inwi), affecting the 216.198.79.1 apex IP
specifically, rather than a DNS or application configuration problem.

Could someone from the Vercel networking team look into this? Happy to provide
additional diagnostics (traceroute/mtr from within Morocco) if useful.

Thank you!

[nfdcopilot-5305 (ADALIGO)]

Hi Hassan,

Thank you for checking this.

Unfortunately, the problem is still happening, and I want to clarify one important point: this is not limited to one Orange Wi-Fi router or one local network.

I tested the domains through multiple different Orange connections:

• Orange Wi-Fi network #1 → Not working

• A completely different Orange Wi-Fi network → Not working

• Orange 4G/mobile data from my phone → Not working

• Germany VPN → Working

• Spain VPN → Working

• Other VPN connections → Working

And the problem affects all 4 of my .com domains hosted on Vercel.

The Vercel deployments are healthy, the domains show Valid Configuration, SSL is active, and the .vercel.app URLs work normally.

The most significant observation is:

Any connection using Orange Morocco → custom Vercel domains do not load.
When the connection is routed through a VPN outside Orange → the exact same domains load immediately.

Since I tested both different Orange fixed-line networks and Orange 4G, I think we can rule out a single router, Wi-Fi network, or local DNS cache.

This makes me think the issue may be somewhere at the Orange Morocco ↔ Vercel network/routing/peering/DNS/connectivity level, rather than with my individual connection or Vercel projects.

Could you please check whether there is any known issue affecting Vercel domains from Orange Morocco, or whether Vercel can investigate the connectivity/routing from Orange ASNs toward the Vercel Edge Network?

I can provide nslookup, tracert, curl, DNS resolver results, destination IPs, timestamps, and any other diagnostics needed.

The issue is still completely blocking access to all 4 domains from Orange Morocco, while they remain accessible through VPN and other networks.

Thank you

[pawdd]

Orange Poland similar problems. Anyone in contact with Orange?