by Darius Kazemi, October 20 2019

In 2019 I'm reading one RFC a day in chronological order starting from the very first one. More on this project here. There is a table of contents for all my RFC posts.

More numbers

RFC-293 is titled “Network Host Status”. It's authored by Ellen Westheimer of BBN and dated January 18, 1972.

The technical content

This is another report from BBN on the status of various ARPANET hosts in the same series as RFC-288, RFC-287, RFC-267, RFC-266, RFC-255, RFC-252, RFC-235, and RFC-240.

The numbers this time, from January 3 to January 15:


Slight improvement in availability, with 31.2% of all attempted connections working, and 39% if you only count the original 12 sites that were measured by these tests. Even though there are 16 ARPANET sites that are online, only the ones at UCLA, SRI, MIT, and BBN can be said to have meaningful uptime.

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About me

I'm Darius Kazemi. I'm an independent technologist and artist. I do a lot of work on the decentralized web with ActivityPub, including a Node.js reference implementation, an RSS-to-ActivityPub converter, and a fork of Mastodon, called Hometown. You can support my work via my Patreon.