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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...?

How to Build a Resilient IP Infrastructure Across Cloud Providers

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IP Leasing | IPv4 & IPv6 | Proxy

AI, Cloud & IoT Are Driving New IPv4 Demand (and Why /24s Matter More Than Ever)

IPv4 didn’t “go away.” It got re-priced, re-packaged, and pulled back into the center of modern infrastructure planning. In 2024-2025, IPv4 demand accelerated again, not because teams ignored IPv6, but because AI data collection, hybrid cloud expansion, and IoT edge rollouts still depend on routable IPv4 identity to operate reliably at scale. The result is… Continue reading AI, Cloud & IoT Are Driving New IPv4 Demand (and Why /24s Matter More Than Ever)

IP Leasing | IPv4 & IPv6 | Proxy

IPv4 Address Leasing Explained: What It Is, Why It Matters, and How to Do It Right

IPv4 address leasing is a fixed-term arrangement where an IPv4 block holder grants another organization the right to use and route IPv4 addresses, while the holder retains ownership. It’s a practical way to access scarce IPv4 capacity without a permanent purchase and a way for holders of unused space to monetize idle resources responsibly. Key… Continue reading IPv4 Address Leasing Explained: What It Is, Why It Matters, and How to Do It Right

IP Leasing | IPv4 & IPv6 | Proxy

7-Step IP Address Strategy Audit You Can Complete in 60 Minutes

If you are leading a growing engineering team, running a structured IP Address Strategy Audit is no longer optional. Your IP infrastructure directly impacts cybersecurity, compliance, scalability, and operational cost. A modern IP Address Strategy Audit evaluates whether your IPv4 resources, IPv6 deployment, ASN governance, and proxy infrastructure are aligned with both growth and security… Continue reading 7-Step IP Address Strategy Audit You Can Complete in 60 Minutes

IP Leasing | IPv4 & IPv6 | Proxy

Geolocation in IP Leasing: A Practical Checklist for Secure, Region-Based Infrastructure

Today, geolocation in IP Leasing is a foundational signal for services, with leading providers reporting nearly 99.8% accuracy at the country level, making geolocated IP leasing a dependable foundation for regional performance and compliance. Geolocation in IP leasing directly affects performance, security, and compliance. Accurate regional alignment reduces latency, prevents access issues, and strengthens trust… Continue reading Geolocation in IP Leasing: A Practical Checklist for Secure, Region-Based Infrastructure

Press Releases

PubConcierge Unveils ‘Responsible Web Data for AI’ Ahead of AI & Big Data Expo London (Feb 4–5, 2026)

PubConcierge Unveils ‘Responsible Web Data for AI’ Ahead of AI & Big Data Expo London (Feb 4–5, 2026) – IT Industry Today – EIN Presswire London, UK – 2 February 2, 2026 — PubConcierge today introduced Responsible Web Data for AI, a practical governance framework for teams collecting public web data for AI and analytics.… Continue reading PubConcierge Unveils ‘Responsible Web Data for AI’ Ahead of AI & Big Data Expo London (Feb 4–5, 2026)

IP Leasing | IPv4 & IPv6 | Network Protocols | Proxy

How do I secure a leased IP block from abuse?

If you lease IP space for production, you are not just renting addresses. You are renting a piece of internet identity. To secure a leased IP block, you need the same mindset you use for cloud access and production credentials: clear ownership, strict change control, strong monitoring, and fast containment when something looks off. When… Continue reading How do I secure a leased IP block from abuse?

IP Leasing | IPv4 & IPv6 | Network Protocols | Proxy

Subnetting in 2026: The Modern Guide to CIDR, Cloud Subnets, and Security Segmentation

Subnetting is the practice of dividing a larger IP network into smaller, more manageable networks called subnets. The concept hasn’t changed, but the stakes have. In 2026, subnetting is no longer just “network math.” Subnetting is a capacity plan, a security control, and often a business constraint, especially when IPv4 availability (link anchor: https://www.pubconcierge.com/blog/ipv4-ip-leasing-boom/ )… Continue reading Subnetting in 2026: The Modern Guide to CIDR, Cloud Subnets, and Security Segmentation

IP Leasing | IPv4 & IPv6 | Network Protocols | Proxy

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

Subnet planning looks easy when your AI cluster is still a whiteboard sketch. Then the racks arrive, the first training window is booked, Kubernetes shows up, and your addressing plan decides whether you launch smoothly or spend a weekend renumbering nodes. This guide is for AI infrastructure teams and cybersecurity-aware tech leaders who also care… Continue reading Subnet Planning for AI Workloads: Start With Host Bits (and Design Egress Early)

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

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