https://www.123-reg.co.uk/domain-names/register-uk-domains/ It sounds like either it went live without a script checker to prevent multiple pre-orders for each domain, or that they were already taking backorders for .uk: 123 reg: When the whole ROR campaign started, we checked our database logs and it was noticeable that multiple people preordered the same domains. Being the same reseller, it was decided that it is redundant to ask for the same domain from multiple accounts. So there was a quick script which resolved this. Me: so essentially some domains (like XX.uk) were pre-ordered prior to the campaign but no-one had attempted to pre-order after the campaign. I was allowed to pre-order it as it had no new pre-orders since the campaign starting. Then other domains like YY.uk weren't pre-ordered prior to the campaign so when I was the first pre-order, the system picked it up and blocked further pre-orders being made? 123 reg: Yes, precisely.