Blog
IPv4 Transfers in 2026: YTD Data and Trends
January–August 2026 IPv4 transfers: volume fell 27.6%, but ARIN dropped while RIPE grew. See the biggest participants and M&A records, with data to download.
Marit Boelens
September 5, 2026
9 min read
Why short-term IPv4 projects still need clear routing and ownership records
Why do short-term IPv4 routing records still matter for temporary projects? We review short-term IPv4 routing records together with ownership, BGP, RIR, registry data, route objects and verification — in the article by IPv4 Online.
Marek Dvořák
September 3, 2026
4 min read
Why leased IPv4 ranges should be tracked separately from owned address space
Why does leased and owned IPv4 tracking need separate records? We examine leased and owned IPv4 tracking through inventory separation, IPAM, ownership status, tagging and reconciliation — in the article by IPv4 Online.
Marek Dvořák
September 3, 2026
4 min read
Why leased IPv4 can simplify access rules for security testing infrastructure
Why do leased IPv4 security access rules simplify testing infrastructure? We review leased IPv4 security access rules through testing allowlists, firewall rules, access control, source allowlists and access lists — in the article by IPv4 Online.
Marek Dvořák
September 3, 2026
4 min read
Why finance, legal and network teams should align before buying IPv4 addresses
Why does IPv4 purchase team alignment matter before buying address space? We examine IPv4 purchase team alignment across finance, legal, network, approvals, stakeholder responsibilities and review — in the article by IPv4 Online.
Philippe Girard
September 3, 2026
4 min read
Why companies should clean up internal IP documentation before selling IPv4
Why does IPv4 sale documentation cleanup matter before selling a block? We examine IPv4 sale documentation cleanup across records, IPAM, inventory, ownership, allocation, assignment and the asset register — in the article by IPv4 Online.
Marek Dvořák
September 3, 2026
4 min read
Why companies lease IPv4 before opening a new region or point of presence
Why use an IPv4 lease for a new region before opening a point of presence? We explain IPv4 lease for a new region through regional launch, expansion, deployment, infrastructure and service capacity — in the article by IPv4 Online.
Jonas Nielsen
September 3, 2026
5 min read
What stakeholders should be involved before an IPv4 sale decision
Which IPv4 sale decision stakeholders should be involved before approval? We review IPv4 sale decision stakeholders across finance, legal, network, security, compliance and executive approval — in the article by IPv4 Online.
Philippe Girard
September 3, 2026
5 min read
What risks appear when unused IPv4 space remains unmanaged
What unmanaged unused IPv4 risks appear when address space lacks oversight? We examine unmanaged unused IPv4 risks through abuse, hijacking, routing, registry, reputation, unauthorized use and security — in the article by IPv4 Online.
Giulia Marchetti
September 3, 2026
4 min read
What network architects should decide before purchasing IPv4 for a new platform
What should new platform IPv4 purchase planning define before acquisition? We review new platform IPv4 purchase planning through architecture, prefix size, routing, redundancy, BGP and RIR requirements — in the article by IPv4 Online.
Marek Dvořák
September 3, 2026
5 min read
What makes a temporary project suitable for IPv4 rent instead of a long-term lease
What determines temporary IPv4 rent suitability instead of a long-term lease? We review temporary IPv4 rent suitability through project duration, workload, infrastructure and rental criteria — in the article by IPv4 Online.
Jonas Nielsen
September 3, 2026
5 min read
How to structure IPv4 monetization without losing control of strategic assets
How should IPv4 monetization asset control protect strategic address space? We explain IPv4 monetization asset control through reserves, exclusions, policies, block segmentation, protected ranges and limits — in the article by IPv4 Online.
Giulia Marchetti
September 3, 2026
4 min read
How to prepare monitoring and ownership records for leased IPv4 blocks
How should leased IPv4 monitoring records include ownership data? We review leased IPv4 monitoring records through ownership documentation, verification, registry and route monitoring, reassignment and RIR data — in the article by IPv4 Online.
Marek Dvořák
September 3, 2026
4 min read
How to prepare customer communication before changing public IPv4 ranges
How should a public IPv4 change notice be prepared for customers before range changes? We cover the public IPv4 change notice through renumbering communication, migration notices, cutover timing and updates — in the article by IPv4 Online.
Marek Dvořák
September 3, 2026
4 min read
How to prepare an IPv4 block for buyer onboarding after a sale agreement
How should IPv4 buyer onboarding preparation begin after a sale agreement? We cover IPv4 buyer onboarding preparation through routing, RIR, registry and route handover, documentation and transfer onboarding — in the article by IPv4 Online.
Philippe Girard
September 3, 2026
4 min read
How to plan IPv4 address utilization before committing to a purchase
How should IPv4 purchase utilization planning be handled before committing to a purchase? We review IPv4 purchase utilization planning through forecasts, requirements, targets and subnet utilization — in the article by IPv4 Online.
Lukas Brandt
September 3, 2026
4 min read
How to plan a phased exit from IPv4 blocks before sale
How should an IPv4 sale phased exit be planned before transfer? We explain IPv4 sale phased exit through migration phases, decommissioning, dependency removal, route withdrawal and traffic migration — in the article by IPv4 Online.
Lukas Brandt
September 3, 2026
4 min read
How to organize leased IPv4 ranges between production, staging and customer pools
How should leased IPv4 pool segmentation separate production, staging and customer ranges? We cover leased IPv4 pool segmentation through environment separation, pool allocation and customer isolation — in the article by IPv4 Online.
Jonas Nielsen
September 3, 2026
4 min read
How to compare recurring IPv4 income with keeping addresses unused
How should IPv4 recurring income vs idle space be compared by asset owners? We compare IPv4 recurring income vs idle space through lease income, holding, yield, returns, revenue and idle-address analysis — in the article by IPv4 Online.
Giulia Marchetti
September 3, 2026
4 min read
How to choose rented IPv4 for sandbox, QA and pre-production environments
How should rented IPv4 sandbox selection work for QA and pre-production? We cover rented IPv4 sandbox selection through testing requirements, reputation, blacklist, geolocation, routing checks and subnet sizing — in the article by IPv4 Online.
Jonas Nielsen
September 3, 2026
4 min read