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Flavius Porumb is a top telecommunication executive and serial entrepreneur. He excels in creating and growing new IT companies thanks to his 15-plus years of experience in this industry.
Currently, he is the CEO of Pubconcierge, a global datacenter & cloud services provider focused on IP leasing solutions.

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Network Protocols | IPv4 & IPv6 | What is...?

Subnet Planning for AI Workloads: Start With Host Bits (and Design Egress Early)

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IP Leasing | IPv4 & IPv6 | Proxy

Why IPv4 Leasing Still Matters for Proxy-Driven Infrastructure

IPv4 leasing for proxy infrastructure remains a critical requirement for platforms that depend on consistent reachability, predictable performance, and reputation-sensitive access at scale. Proxy-driven environments operate under constant scrutiny from anti-abuse systems, content protection layers, and automated defenses, making IP quality and governance as important as raw capacity. Despite growing IPv6 adoption, the majority of… Continue reading Why IPv4 Leasing Still Matters for Proxy-Driven Infrastructure

IP Leasing | IPv4 & IPv6 | Proxy

Unlocking Zero Trust: How IP Leasing Enhances Microsegmentation & Access Control

In today’s cybersecurity landscape, data breaches, and security vulnerabilities are growing concerns for organizations of all sizes. With an increasing reliance on cloud services, remote work, and decentralized infrastructure, the traditional network perimeter no longer provides adequate protection. This is where Zero Trust Architecture (ZTA) comes in, a model that assumes threats exist both inside… Continue reading Unlocking Zero Trust: How IP Leasing Enhances Microsegmentation & Access Control

IP Leasing | IPv4 & IPv6 | Proxy

How to Recover from IP Blacklist: Step-by-Step Guide for Marketers & Sysadmins

As a marketer or sysadmin, few things are worse than realizing your emails aren’t reaching recipients or your website traffic has dropped due to an IP blacklist. Increased bounce rates, blocked emails, or sudden traffic drops can damage your reputation and hinder your marketing efforts. Recent statistics about IP blacklists show that millions of IP… Continue reading How to Recover from IP Blacklist: Step-by-Step Guide for Marketers & Sysadmins

IP Leasing | IPv4 & IPv6 | Proxy

IP Leasing for Telecom: The Fastest Way to Scale 5G, MEC, and Edge Networks with Clean IPv4

If you are expanding 5G Standalone coverage, lighting up new MEC zones, deploying UPFs at the edge, or launching private 5G networks for enterprise clients, you already know the biggest constraint. IPv4 remains scarce, IPv6 is nowhere near universal adoption, and clean, reputation-safe IP space has turned into a competitive asset. IP leasing for telecom… Continue reading IP Leasing for Telecom: The Fastest Way to Scale 5G, MEC, and Edge Networks with Clean IPv4

IP Leasing | IPv4 & IPv6 | Proxy

Scaling E-commerce Platforms with IP Leasing: How Retailers Prevent Downtime During Peak Traffic

In the fast-moving world of online retail, Scaling E-commerce Platforms with IP Leasing means no one wants to see their site crash when the rush hits. At PubConcierge, we know what it’s like to support infrastructure at scale. We’re often asked: How can e-commerce platforms scale smoothly during traffic surges and what role does IP… Continue reading Scaling E-commerce Platforms with IP Leasing: How Retailers Prevent Downtime During Peak Traffic

IP Leasing | IPv4 & IPv6 | Proxy

Inside the Lifecycle of a Leased IP: What Really Happens from Allocation to Retirement

If you are exploring a leased IP for web scraping, data pipelines, growth experiments, or temporary infrastructure, you deserve to know exactly what happens behind the scenes. A leased IP can feel like a simple subscription. In reality, it is a living resource that passes through a careful process from allocation to retirement. Transparency builds… Continue reading Inside the Lifecycle of a Leased IP: What Really Happens from Allocation to Retirement

IP Leasing | IPv4 & IPv6 | Proxy

IP Leasing for VPN Services: The 2025 Guide to Expanding IP Pools and Maximizing User Privacy

If you run a VPN, you are in a constant footrace: more users, more regions, more streaming rules, and stricter abuse controls. The fastest way to get ahead is simple in idea, hard in execution: grow your IP supply without sacrificing trust. That is exactly where IP Leasing for VPN Services changes the game. Why… Continue reading IP Leasing for VPN Services: The 2025 Guide to Expanding IP Pools and Maximizing User Privacy

IP Leasing | IPv4 & IPv6 | Proxy

IP Leasing and IoT Expansion: The Ultimate Guide to Scaling Connected Devices

IoT is exploding, yet address planning is holding back scale. Many enterprises discover the limits of carrier grade NAT during pilots and again at rollout. IP leasing and IoT planning, done together, solves real problems like remote access, stable device identity, network observability, and compliance labeling. In 2025, leased IPv4 blocks remain affordable compared to… Continue reading IP Leasing and IoT Expansion: The Ultimate Guide to Scaling Connected Devices

IP Leasing | IPv4 & IPv6 | Proxy

Using Leased IPs to Simulate Global Traffic in QA Environments

Learn how DevOps teams use leased IPs to run geo-realistic load tests and user emulation before launch. Includes playbooks, architecture, legal compliance, and 2025 market stats. If your app looks great in the lab but buckles the moment real users hit from five continents, the problem is not just scale. It is realism. Region, network… Continue reading Using Leased IPs to Simulate Global Traffic in QA Environments

IP Leasing | IPv4 & IPv6 | Proxy

10 Rules For Clean Leased IPs That Never Get Blacklisted

If your company runs customer outreach, product notifications, or scraping and data collection on leased IPs, deliverability and reputation are everything. Blacklists can shut down communication, slow pipelines, and drain ad spend in hours. The good news is that leased IPs can be just as safe as owned space when you run them with a… Continue reading 10 Rules For Clean Leased IPs That Never Get Blacklisted

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