You get hosted adsense account. It is limited and can not be used in other top level domain or your personal domain.
There is only one difference between AdSense hosted account and AdSense normal account.
Adsense Hosted account: You can show Adsense ads using this account only on Youtube, BlogSpot, Hubpages (Sites which let you apply for Adsense and use ad codes on their domain)
Normal Account: You can use this account on any Sites/Domain owned by you.
🙂 enjoy your adsense.