Bringing your own IP address (BYOIP) can offer several advantages. Here are a few reasons why you might consider bringing your own IP address:
- Improved security. Bringing your own IP address can enhance security measures. You may implement a firewall based on your own ASN and IP ranges. 
- Seamless migration and scalability. By using the same IP address, you can minimize the need for reconfiguration of your services. 
- Reputation management. You have the ability to manage your IP reputation, which can impact email deliverability, online reputation, etc. 
- Subscription management. Online subscriptions such as JSTOR often use IP-based access control to manage and restrict access to their content. 
Here is a list of small providers that support BGP sessions:
- Vultr: Worldwide. Supports BGP communities; third party communities passthrough to providers. 
- StarryDNS: HK, JP. 
- Wu Zhiyuan: US, DE. Supports BGP communities; third party communities passthrough to providers. 
- V.PS: Worldwide. 
- HostHatch: SG, JP, HK, US, NL, GB, SE, AU. 
- Ferenz Networks: BR. 
- Misaka: Worldwide. In some locations they only announce your routes to IXP members.