Amateur Radio Digital Communications (ARDC) manages the 44.*.*.* IP address space and awards grants to cool #hamradio and tech projects.

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Joined June 2021
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Reminder: Our next grant application deadline is Feb. 1. We welcome projects across amateur radio and digital communications, with our priority areas being R&D, space-based communications, and open source education. Apply at grants.ardc.net/. #ardc
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Congrats to our grantees at Case Amateur Radio Club W8EDU for becoming the first collegiate club to earn the ARRL DXCC Trident Award: case.edu/news/case-amateur-r…. #ardc #ardcgrantees #amateurradio #hamradio #science #technology
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Our latest YouTube video features Schuyler Erle's N0GIS talk from the Zero Retries Digital Conference (ZRDC) 2025: youtu.be/k9_JttKz8WI. Video courtesy of Zero Retries: zeroretries.org/p/zero-retri…. #ardc #44net #amateurradio #digitalcommunications
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Our grantees at @TeachersInSpace are hosting an Introduction to CubeSat Flight Experiments on January 24-25, 2026 in Albuquerque, NM. The event is open to NM K-12 & informal educators, librarians, teaching assistants, and aides. Visit tis.org/in-person-2 to learn more.
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In the mid-1980’s, Phil Karn KA9Q implemented TCP/IP for amateur packet radio on IBM PC’s, helping unlock IP over RF for hams long before the Internet was widely available. #44Net #44yearsof44net #hamradio #amateurradio #digitalinnovation
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The first SPARKI workshop of 2026 is later this month, in the shadow of the Artemis rocket at KSC. Learn more about the SPARKI program at ariss.org/space-pioneers-ama… and thanks to @ARDC_73 for the support!
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In September 1981, Hank Magnuski KA6M contacted Jon Postel and acquired the 44.0.0.0/8 block of ~16M IPv4 addresses for #amateurradio experimentation. #44net #44yearsof44net #digitalcommunications
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44Net has remained active for more than four decades, continuing to support amateur radio experimentation with IP networking. #44net #44yearsof44net #amateurradio #digitalinnovation
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ARDC will be closed for the holidays starting tomorrow, 12/20/2025, and we'll return to the office on Monday, 1/5/2026. Have a great holiday season, and we'll see you in 2026! #ardc #amateurradio 📸 Heather Katsoulis, licensed under CC BY-SA 2.0.
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On December 10, 2025, 45 years after Hank KA6M put up the first digipeater in the U.S., ARDC debuted 44Net Connect, an easy-to-use service helping hams get started with 44Net. #ardc #44net #44yearsof44net #44netconnect
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Our November/December 2025 Newsletter is live! Check it out for the latest news & updates: ardc.net/?na=view&id=103. Like getting updates from ARDC? Subscribe to our Newsletter: ardc.net/about/newsletter/. 📸"Happy Holidays" by Muffet is licensed under CC BY 2.0.
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Big news for hams and experimenters: 44Net Connect is live! 🎉 A simple, modern way to start using 44Net IP’s, with no complex setup required. Works with a wide range of devices that support WireGuard. Check out the related blog post to learn more: ardc.net/introducing-44net-c…
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It's always a good time to be thankful, and we would like to thank our ARISS-USA sponsors including: @NASA SCaN @ISS_CASIS @ARDC_73 @AMSAT & @arrl
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HAMNET is one of the longest-running and largest amateur radio community networks– spanning Germany and neighboring countries. Entirely volunteer built and self-organized, it’s a standout example of a self-governing, community-driven network: hamnet.eu/. #hamnet
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🎉 Today, we celebrate 45 years since Hank Magnuski KA6M put up the first digipeater in the U.S.: a significant milestone for packet radio! 🎉 #packetradio #digitalinnovation #digitalcommunications #amateurradio
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Happy International Volunteer Day! 🎉 We'd like to give a huge thank you to all of our wonderful volunteers. Your commitment strengthens the AR and DC communities and helps ARDC make a global impact. We couldn't do this work without you! #internationalvolunteerday #ardcvolunteers
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Hank Magnuski KA6M was among the first hams to send a packet through a satellite, experimenting with AO-10 after its 1983 launch. #hamradio #packetradio #44net #44yearsof44net
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44Net was one of the earliest large-scale IP networks outside of ARPANET, connecting hams with TCP/IP over radio before the Internet was mainstream. #44Net #Networking #amateurradio #digitalcommunications #digitalinnovation
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Did you know? Our current 44Net mailing list originated from the tcp-group mailing list, established in 1985. #44net #44yearsof44net #digitalcommunications
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