I wondered why they aren't just using 'barclays' without any subdomain. Turns out A and MX records are prohibited on "dotless domains": https://www.icann.org/n

I wondered why they aren't just using 'barclays' without any subdomain. Turns out A and MX records are prohibited on "dotless domains": https://www.icann.org/news/announcement-2013-08-30-en https://www.icann.org/news/announcement-2013-08-30-en