Blog
Grant Report: Measuring Internet Abuse via IP Addresses
The DNS Research Federation received an ARIN Community Grant in 2024 to investigate the role of IP addresses in malware and phishing attacks. Project Lead Carolina Caeiro reports on the project's outcomes and impact.
ARIN Reaffirms Regional Support at the Connected Caribbean Summit 2025
Each December, the Connected Caribbean Summit (CCS) brings together leaders working at the intersection of policy, technology, and regional development. In 2025, ARIN helped anchor key discussions alongside more than 300 regional and international stakeholders at the largest CCS to date.
What Is More Energy-Efficient: IPv4 or IPv6?
IPXO Co-founder Vincentas Grinius examines how IPv4 and IPv6 influence power usage to support decisions about building a more sustainable Internet.
ARIN Bits: December 2025
As we count down to the new year and winter takes hold, we've bundled up our last ARIN Bits of 2025! In this round up we share important updates from this past quarter and details about upcoming events.
NRO RPKI Program — 2025 in Review
2025 is coming to an end, and we want to pause to reflect on our achievements this year as part of the NRO RPKI Program.
ARIN's 2025 Holiday Food and Toy Drives Bring Joy to Local Families
This holiday season, ARIN organized a food drive in support of local food pantries and a toy drive in support of Northern Virginia Family Service, building on last year's successful relaunch of our holiday giving tradition.
Behind the Scenes at ARIN’s Government Affairs Department
ARIN’s Senior Government Affairs Analyst shares an example of how our Government Affairs Department protects the ARIN community’s interests in international standards-making forums.
Exploring the Potential of RPKI Signed Checklists for Stronger Trust Models
The Internet Society (ISOC) received an ARIN Community Grant in 2024 to support its work exploring new tools that strengthen the resilience and trustworthiness of the Internet’s routing system, specifically RPKI Signed Checklists (RSCs). ISOC’s Internet Measurement and Data Expert Amreesh Phokeer reports on the project's outcomes and impact.
Everything 8.3 & 8.4 Transfer Source and Recipient Organizations Need to Know
This overview outlines the actions a source organization involved in a transfer to specified recipients within the ARIN region or an inter-RIR transfer must take to prevent issues with Route Origin Authorizations (ROAs) or Internet Routing Registry (IRR) or reverse DNS records.
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