Savvas Bout founded Prefixx in 2018 to make IPv4 transfers and leasing straightforward for the people who actually run networks. He brings more than 20 years of experience designing, operating and maintaining data centre infrastructure for service providers, enterprises and cloud hosters, spanning network engineering, data centre design and operations, and bare-metal cloud. He works on transfers and leases across ARIN, RIPE NCC and APNIC, and on bringing customer address space into production on the Netrouting network.
Articles by Savvas Bout
List IPv4 With a Broker: Avoid Costly Mistakes
Learn how to list IPv4 with a broker the right way. Avoid documentation errors, failed QC, and unvetted buyers. Prefixx...
Read → Nov 02, 2026IPv4 Addresses on the Balance Sheet: A CFO Guide
IPv4 blocks are now auditable assets, not utilities. Learn how to value, classify and report address space before your n...
Read → Oct 30, 2026IPv4 CapEx vs OpEx: Buy or Lease the Right Way
Buy IPv4 and own the asset. Lease and preserve cash flow. Compare real trade-offs across cost, routing, and balance shee...
Read → Oct 29, 2026Delisting an IPv4 Range from Blocklists: Step-by-Step
Delisting an IPv4 range from blocklists takes more than one request. Learn which lists matter, how to submit, and how to...
Read → Oct 28, 2026WHOIS Sub Registration for Lessees: Fix Your Visibility
Leasing IPv4 space but invisible in WHOIS? Sub registration puts your org on record, resolves abuse routing, and satisfi...
Read → Oct 28, 2026IPv4 Market Participants: Who Shapes Every Deal
Learn who the IPv4 market participants are, how each actor affects pricing and routing, and how to navigate transfers wi...
Read → Oct 27, 2026Is Buying IPv4 Addresses Legal? What You Need to Know
Buying IPv4 addresses is legal and happens thousands of times a year. Learn how RIR transfers work, what the rules are,...
Read → Oct 27, 2026IPv4 Broker vs Self-Serve Platform: How to Choose
Broker or self-serve? Block size, registry rules, and routing paperwork all shift the answer. See which model fits your...
Read → Oct 26, 2026IPv4 Broker Invoicing and Currencies Explained
Understand IPv4 broker invoicing: currency mismatches, tax treatment by RIR region, wire fees, and escrow mechanics befo...
Read → Oct 26, 2026IPv4 Transfer Document Checklist: Every File You Need
Avoid registry delays with a complete IPv4 transfer document checklist. Covers ARIN, RIPE, APNIC and inter-RIR deals. St...
Read → Oct 23, 2026BGP Announcement: Make Your IPv4 Block Reachable
A BGP announcement puts your IPv4 block on the global routing table. Learn how origin ASN, RPKI and IRR work together, a...
Read → Oct 23, 2026RIR Transfer Eligibility: What Blocks Must Pass
RIR transfer eligibility trips up more deals than pricing does. Learn what each registry checks before a block can move,...
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