IPv4 (Internet Protocol Version 4) is a 32-bit addressing system that provides unique numerical identifiers for devices on a network. With IPv4 address exhaustion, a secondary resale market has emerged, where organizations buy and sell unused addresses to meet ongoing demand, while IPv6 adoption gradually replaces IPv4 for scalability.

Brander Group is a qualified brokerage firm to buy and sell IPv4 addresses in the ARIN, APNIC, and RIPE NCC regions

Posts

How CALEA Compliance Impacts CG-NAT & IPv4 Addressing

How U.S. CALEA Regulations Affect CG-NAT and IPv4 Strategy

Communications Assistance for Law Enforcement Act, a U.S. law that requires telcos and ISPs to support lawful interception requests when served with valid legal authorization.
Best Practices for ARIN IPv4 8.3 & 8.4 Transfer Requests

Best Practices for ARIN IPv4 8.3 & 8.4 Transfer Requests

Everything a source and recipient organization needs to know when participating in an ARIN IPv4 8.3 & 8.4 transfer request
Understanding IPv4 Abuse

Understanding IPv4 Abuse

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What IPv4 abuse is, how spam, botnets, and routing attacks are handled today, and whether internet security efforts are actually improving.
RPKI = trust for Internet routing. This flow shows how IP resources, ROAs, validators, and routers connect to keep BGP secure.

What is RPKI? Resource Public Key Infrastructure

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RPKI (Resource Public Key Infrastructure) protects Internet routing by validating BGP announcements with cryptographic certificates.
ARIN 2026 Fees - Everything You Need to Know

ARIN Fee Increase for 2026 – Everything You Need to Know

ARIN announces a 5% fee increase for 2026, new annual pricing table, and a temporary IPv6 waiver for small organizations.
Cogent Raises $174m by Securitizing IPv4 Addresses

Cogent Raises $174M By Securitizing IPv4 Addresses

Cogent’s $174 million IPv4 securitization signals a new approach to monetizing address space in the tech and telecom sectors
MAP-T vs. CGNAT: IPv4 Address Translation

MAP-T vs. CGNAT: IPv4 Address Translation

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MAP-T and CGNAT help manage IPv4 exhaustion; Brander Group ensures seamless transition and network optimization.
IPv4 Blocks - Everything You Need to Know

IPv4 Blocks – Everything You Need to Know

IPv4 blocks are essential to understanding how the web works and why we’re seeing shifts in networking technology
How to Configure DNS for ISPs

How to Configure DNS for Internet Service Providers (ISPs)

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Setting up DNS (Domain Name System) properly for Internet Service Providers (ISPs) requires configuring DNS servers and network infrastructure to ensure reliable & efficient domain name resolution for your end user subscribers.
How to Migrate from IPv4 to IPv62024

Thinking of Migrating to IPv6 from IPv4 Addresses?

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While both are viable options for enterprise networks, There are good reasons to migrate from IPv4 to IPv6; the current standard IP protocol.