On numeric domains: the story of 5457090.xyz

People sometimes ask about the name. 5457090.xyz is not a typo or a random string: it is a deliberately numeric domain, and after two years of living on it I would make the same choice again.

Why a number

Three reasons. It is unambiguous when read aloud over a bad phone line. It types fast on any keyboard layout, including TV-box remotes and hotel business-center machines that butcher normal words. And it was available: pronounceable .xyz names are long gone, short numbers are not, and a domain this short costs almost nothing to renew.

The trade-off is memorability for strangers -- nobody remembers seven digits they heard once. That is fine. Nothing here depends on type-in traffic; the domain appears in links, in git remotes and in mail addresses, where copy-paste does the remembering.

How the fleet grew around it

The domain became the blog's home in 2023. Then each service got its own subdomain, and the wildcard record quietly became the most useful line in the DNS zone: one A record answers for every service I will ever add.

# the whole service map, as of 2026
www.5457090.xyz    this blog
cloud.5457090.xyz  private file sync
cdn.5457090.xyz    static asset cache
api.5457090.xyz    shared API gateway
mail.5457090.xyz   mail, since 2022
git.5457090.xyz    git hosting
lab.5457090.xyz    experiment data
dev.5457090.xyz    developer tools

Every sub-site links back here, and the footer of each one says the same thing: part of the 5457090.xyz network. One domain, one wildcard, one owner. Boring, and it scales to every future project for free.