Pros
Massive Inventory: They have access to a global network of IPv4 sellers and lessors across all major registries (ARIN, RIPE, APNIC). Verified Clean IPs: One of their biggest selling points is their rigorous blacklist checking. They ensure the IP blocks are "clean" (not flagged for spam or malware) before the transfer. Rapid Processing: For leasing, they can often provide a Letter of Authorization (LOA) in as little as 24 hours, allowing you to start using the IPs almost immediately. End-to-End Support: They handle the complex legal and technical paperwork required by Regional Internet Registries (RIRs), which can be a nightmare for first-time buyers. Flexible Terms: They offer both short-term monthly leases and long-term (up to 5-year) contracts.
Cons
Market Pricing: Because they are a premium broker, their pricing follows the global market trends. As IPv4 scarcity increases, the cost to buy remains high (though leasing is a more affordable alternative). Strict Use Case Requirements: Because they want to keep their IP blocks clean, they may vet your "intended use" strictly. If you plan to use IPs for high-risk activities, you may face more scrutiny. Size Minimums: While they handle /24 blocks (256 IPs), they primarily cater to enterprise and ISP clients, so very small-scale individual users might find the process more corporate than needed.