Just added Web Reachability API (at least that’s what I’m calling it) support to https://ip.small-web.org.

It’s for testing the reachability of your Small Web servers (using a domain or, more importantly, an IPv4/IPv6 address). I’m using it to implement Web Numbers¹ support in Auto Encrypt² and Kitten³.

Protocol:

• At http://<endpoint> return an empty HTTP 200 response that includes the following custom header: 'web-reachability-id': ‘<uuid>'
• Hit: https://ip.small-web.org/reach/<endpoint>/<uuid>/
• If you get a 200 response back, your endpoint is reachable. Anything else signals an error.

Enjoy! 💕

¹ https://ar.al/2025/06/25/web-numbers/
² https://codeberg.org/small-tech/auto-encrypt
³ https://kitten.small-web.org

#WebReachabilityAPI #WebNumbers #IpAddresses #reachability #Kitten #AutoEncrypt #SmallWeb #peerToPeerWeb #SmallTech

Introducing Web Numbers

Domains? Where we’re going, we don’t need domains!

Get ready for an exciting new (old?) way to address (small) web sites in 2026.

https://ar.al/2025/06/25/web-numbers/

💕

(Thanks to @letsencrypt.)

#WebNumbers #SmallWeb#domainNames #IPAddresses#TLS#HTTPS#LetsEncrypt #web #decentralisation#SmallTech

Thanking the @letsencrypt folks for the excellent work they do, and especially for their upcoming support for security certificates for IP addresses which is nothing short of revolutionary for the future of the (Small) Web.

https://community.letsencrypt.org/t/getting-ready-to-issue-ip-address-certificates/238777/22

#SmallWeb #security #IPAddresses#WebNumbers#LetsEncrypt#SmallTech #decentralisation#peerToPeerWeb #findability

Introducing Web Numbers

Domains? Where we’re going, we don’t need domains!

Get ready for an exciting new (old?) way to address (small) web sites in 2026.

https://ar.al/2025/06/25/web-numbers/

💕

(Thanks to @letsencrypt.)

#WebNumbers #SmallWeb#domainNames #IPAddresses#TLS#HTTPS#LetsEncrypt #web #decentralisation#SmallTech