It's a rule of thumb that DNS servers world wide will provide the new, updated IP address within approx. 24hours. Sometimes the update happens much faster. Thus, my home provider showed the new address within 30(!) minutes. I was on the road through commitments in Oslo today and used several wi-fi networks today, all of which had the new IP.
Do not neglect the problem potentially caused by local caching. That is why I recommend using the command ipconfig /flushdns (Windows) or equivalent to ensure the new address is searched for. If the caching is on your tablet and there is no command line facility, time will help as DNS caches don't live untouched forever.... Same applies to intermediate caching servers along the supply chain.
