Sometimes the most interesting domain investment is the one you decide not to renew.
In 2020, legendary domain investor Mike Mann and his marketplace DomainMarket.com removed almost 50,000 domain names from a portfolio that had reached more than 350,000 domains.
On March 5, 2020, Mann’s publicly available portfolio contained 350,854 names. By June 17, that number had fallen to approximately 301,689 — a reduction of almost 50,000 domains in roughly three and a half months.
Most of the portfolio consisted of .com domains, meaning the cleanup was not simply about abandoning obscure extensions. It was a large-scale decision about which names were still worth paying renewal fees for.
50,000 Domains = Serious Renewal Money
The economics are simple.
A portfolio of hundreds of thousands of domains creates an enormous recurring renewal bill. At the time, OnlineDomain estimated that dropping those names could save Mann roughly $400,000 per year in renewal costs.
That is one of the less glamorous sides of domaining.
Buying a domain is easy.
Renewing it for five, ten or twenty years while waiting for the right buyer is where portfolio discipline becomes expensive.
And Mann’s explanation was wonderfully direct.
“Those are the ones worth $0, you can tell because I dropped them.”
— Mike Mann, responding to the published list of dropped domains in 2020.
Were All 50,000 Really Bad Domains?
Not necessarily.
A later analysis identified 49,859 names removed from Mann’s public portfolio. Some had already expired, some were still in redemption or pending delete, some were registered by other investors, and a small number may have disappeared from the list for reasons other than being intentionally dropped.
Domain investors immediately started examining the list.
More than 28,000 names were subsequently identified as either available to register or approaching deletion.
That created an amusing situation familiar to every domainer:
One investor says,
“Worth $0.”
Another investor says,
“Interesting… let me check…”
The Bigger Lesson
Mike Mann continued operating one of the world’s largest privately held domain portfolios after the cleanup. Recent reporting in 2026 still describes DomainMarket as holding around 300,000 domains, and Mann continues reporting significant .com sales.
So dropping 50,000 domains was not an exit from domaining.
It was portfolio maintenance on an industrial scale.
For smaller investors, the lesson may be even more relevant.
A domain does not become valuable merely because you have already renewed it seven times.
Sometimes the most profitable button in domaining is not Buy.
It is Do Not Renew.
“Those are the ones worth $0, you can tell because I dropped them.”
— Mike Mann
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