What Happens if Our Old Domain Expires After a Rebrand?

What is the expiry timeline?

For generic top-level domains such as .com, ICANN's Expired Registration Recovery Policy sets the main steps:

Country-code domains, such as .co.uk or .de, follow their own registry rules, which can be shorter. Registrar reminders go to the registrant email address on record. If that address was on the old domain, or belonged to someone who has left, nobody sees them.

What breaks when it lapses?

• Redirects. Old URLs stop sending visitors and search engines to the new site. Google's guidance on site moves is to keep redirects for as long as possible, and generally at least a year. That is a minimum for search signals to transfer, not a date after which old links stop mattering.
• Links and citations. Articles, directories, partner sites, social profiles, old PDFs and AI answers that name the old domain now lead nowhere.
• Email. Messages to old addresses bounce. Customers, suppliers and systems still using them lose contact with you.
• Account security. Any account still registered with an old-domain email address can have its password reset by whoever controls that domain later.
• AI answers. Assistants that learned your old domain, or find old pages about you, may give it as your website. How that happens is covered in why ChatGPT is recommending the wrong website for your business.

What happens if someone else buys it?

Domains with links and history are valuable, and they are often registered soon after release. A new owner might:

• Park it with ads, which searchers and assistants may still associate with your old brand.
• Publish low-value content to exploit its history. Google's spam policies name this "expired domain abuse": buying an expired domain and repurposing it mainly to manipulate rankings with content of little value.
• Impersonate your former brand, with a site that looks like yours and collects enquiries or payments.
• Receive email sent to your old addresses, including invoices, customer data and password resets.

Assistants that cite the old domain may then send people to a site you do not control, describing it as yours.

What should you do before it expires?

• Keep renewing the old domain, ideally indefinitely. Many registries allow registration for several years at a time. Turn on auto-renew with a payment method that will not expire.
• Hold it in a company account, not a former employee's or agency's, with a contact email on your current domain.
• Turn on registrar lock to prevent unauthorised transfers.
• Keep page-to-page redirects from old URLs to their new equivalents, not everything to the home page.
• Handle email deliberately. Forward old addresses for a transition period, then reject messages with a clear bounce. Do not leave a catch-all mailbox nobody reads.
• Move logins and accounts to new-domain addresses: banking, payment processors, cloud services, app stores, social accounts and registrar accounts.
• Update references you control: profiles, directories, email signatures, documents and feeds. How to keep the old name connected to the new one is covered in how to signal a rebrand from your former name to ChatGPT without losing the old entity.

What if it has already lapsed?

1. Check its status with a registration lookup. If it is in a grace or redemption period, renew or restore it now through your registrar.
2. If someone else has registered it, record what the site shows, with dates and screenshots.
3. Consider buying it back if the owner is willing to sell.
4. Consider a dispute if the owner is using it in bad faith. Under the Uniform Domain-Name Dispute-Resolution Policy, which covers generic domains, a complainant must show three things. The domain must be identical or confusingly similar to its trademark. The owner must have no rights or legitimate interests in it. And it must have been registered and used in bad faith. Take legal advice first.
5. Report impersonation or phishing to the hosting provider and relevant authorities.
6. Warn customers and partners that the old domain is no longer yours, and give them the correct addresses.
7. Correct every reference you can still find, starting with the pages AI answers cite.

How do you check what AI answers say?

Ask ChatGPT, Gemini, Perplexity and Google's AI features, several times each:

• "What is [old brand]'s website?"
• "[Old brand] login"
• "Contact [old brand]"
• "Is [old brand] now [new brand]?"
• "What is [new brand]'s website?"

Record which domain each answer gives, and whether it presents the old one as current. Check official website fields in knowledge sources, such as Wikidata, your LinkedIn page and your Business Profile, which assistants often rely on. How long assistants take to pick up a domain change is covered in how long it takes ChatGPT to recognise a business after a domain change.

What might an illustrative case look like?

Consider an illustrative accounting software company that rebranded and let its old .com lapse three years later. The renewal notices went to a former employee's address. Within two weeks of release, the domain was registered by a third party and showed an ad page with "[old brand] login" links. Several AI answers to "[old brand] login" still gave the old domain. Two customers reported phishing emails from addresses on it. The company filed a domain dispute, warned customers and updated every profile it could find. It also published a notice on its site stating the old domain was no longer its own. It recovered the domain after the dispute, restored page-level redirects and kept the domain on a ten-year renewal.

What do people ask about old domains after a rebrand?

How long should we keep the old domain?

As long as anyone might use it, which for most companies means indefinitely. Renewal costs little compared with the risks.

Can we redirect everything to the new home page?

Page-to-page redirects are better. They keep specific links working and help search engines transfer signals.

Does keeping the old domain slow down the rebrand?

No. Redirects and a "formerly [old brand]" note on the new site help people and assistants connect the two.