---
title: "Using a subdomain and a custom domain together"
url: "https://demo.myforumcat.com/q/39/using-a-subdomain-and-a-custom-domain-together"
forum: "Demo"
question_number: 39
category: "General"
tags: ["Notifications", "Audit Logs"]
status: "open"
solved: false
votes: 25
replies: 5
views: 246
asked_at: "2026-06-19T16:09:47.213Z"
updated_at: "2026-09-18T23:16:53.869Z"
---

# Using a subdomain and a custom domain together

Asked by Kai Tanaka on 2026-06-19 · 25 votes

We would like the default forumcat subdomain to keep working as a fallback even after our custom domain goes live.

## 5 replies

### Reply 1

meow (Owner) · 2026-06-19 · 4 votes

Yes, your forumcat subdomain stays active permanently as a fallback even after a custom domain goes live, both resolve to the same portal.

### Reply 2

Laura Simmons · 2026-06-20 · 1 vote

Handy to know, we kept sharing the subdomain link internally even after the custom domain went live.

### Reply 3

Mei Lin · 2026-06-22 · 1 vote

Confirmed, our team still uses the subdomain link internally out of habit even with the custom domain live.

### Reply 4

Rebecca Stone · 2026-06-22 · 1 vote

Good to know it never goes away, was worried about breaking old bookmarks.

### Reply 5

Sam Rivera (Agent) · 2026-06-23 · 2 votes

Right, the subdomain is a permanent fallback by design, not just during the transition.