I can't remember a screw up by ARIN this bad before. I'm not too concerned about it. I understand that mistakes can happen. That said, I'm a little surprised at how easy it was to make this one.

I'm entirely unsurprised that this mistake involved an excel spreadsheet. Out of all the databases and IP management software they could be using which would have prevented this the first thing the employee reached for was excel. Almost every company I've worked for has employees using excel for data that would be better managed/stored/presented outside of an office document.