There are three ways for your institution to sell or buy IPv4 address blocks with Hilco Streambank (Hilco) through the E&I contract:
Smaller sales (/24-/19) and purchase transactions by Hilco go through their online IPv4 auction marketplace. When multiple offerings of the same block size are available, transactions are placed “in line” and posted in the order they are submitted. Multiple “buy now” offerings are posted simultaneously. Blocks may take up to two weeks to be listed for sale. The average timeframe to be listed is ten days, though it varies based on how much inventory is available.
Once an address block is provided to Hilco, the average time from signing a Hilco Streambank Engagement Agreement to sale is two weeks or less. The average time from the sale to the funds being received by the seller is 5-6 weeks.
A general introduction to sales and purchases through Hilco IPv4.global:
An overview of the basic process of buying and selling IPv4 addresses is available here.