ResolverOne | IP Geo data over DNS
Fast, reliable IP info without apis, just pure dns magic
ResolverOne | IP Geo data over DNS launched on October 2, 2025 with 8 votes, #1,955 of 8,178 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Get IP geolocation data through DNS queries. Perfect for IoT devices, edge computing, and low-bandwidth applications. Fast, reliable, and free (for now!) Try it now: dig TXT $(curl -s icanhazip.com).rslvr.one
Get IP geolocation data through DNS queries. Perfect for IoT devices, edge computing, and low-bandwidth applications. 50-200 bytes per lookup vs 1KB+ HTTP APIs.
Lightweight geolocation data for IoT, satellite, and edge devices. 50-200 bytes per lookup vs 1KB+ for HTTP APIs 50-200 bytes per lookup vs 1KB+ for HTTP APIs. Optimized for LPWAN, NB-IoT, and satellite connections where every byte counts. Ideal for battery-powered devices. DNS works everywhere — from ESP32s to legacy MCUs. No HTTP client libraries, no TLS overhead, no complex networking stack required. Sub-second responses with no SSL handshake overhead. DNS queries are fast, reliable, and globally cached. Query 8.8.8.8.rslvr.one for instant locationfrom resolver.one
Does a similar job
all alternatives →
Tiny, fast, and free API to geolocate IP addresses2019 · github.com · ▲144Lightweight API service to get geolocation data from IP addresses. - risk3sixty/geoapi
IPLocate Free IP Geolocation Databases2025 · iplocate.io · ▲11Free downloadable IP to Country & IP to ASN databases
IP-Api.io – Geolocation by IP2019 · ip-api.io · ▲36Fast JSON API for IPv4/IPv6 geolocation, ASN/ISP data, and VPN/proxy detection. Start in minutes.
- IMI made IP-to-Geo location data library for developers2025 · ip2geo.framer.website · ▲10
I made this lib called Ip2Geo — it's a super-lightweight, type-safe library that lets you convert any IP into geolocation data. It's 100% free with unlimited uses—no catch. It works online only and runs on both the client and server.
- IIIpinfo.io CLI2021 · ▲9
We've just launched an opensource golang `ipinfo` cli that lets you quickly and easily get IP address data from the cli. You can lookup geolocation, isp, carrier & vpn status for a single IP (in much the same way you can by `curl ipinfo.io`) but there's a bunch of additional functionality, including: - bulk lookups of IPs - summarize IPs (so get top ASNs, cities etc from a ton of IPs) - grepip subcommand to grep for IPs (v4, v6 and bogon flags available) - map command to map a bunch of IPs And more! See https://github.com/ipinfo/cli for more details and installation…
IPLocate.io – a free IP geolocation service2017 · iplocate.io · ▲20Real-time geolocation and privacy detection API for developers and enterprises. Free up to 1,000 requests per day. Detect user location, proxy and VPN usage, and more. Trusted by 100k businesses worldwide. More than 15 billion requests served every month.
More dev tools this month
the category →

open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 29d ago · github.com

Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 27d ago · github.com

Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.
Dev tools · 15h ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 24d ago · openbot.run
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 21d ago · talanoa.email
Source: Product Hunt launch ↗
Launched alongside, October 2025
the whole month →


I went down the rabbit hole on a side project and ended up building this: Strange Attractors(https://blog.shashanktomar.com/posts/strange-attractors). It’s built with three.js. Working on it reminded me of the little "maths for fun" exercises I used to do while learning programming in early days. Just trying things out, getting fascinated and geeky, and being surprised by the results. I spent way too much time on this, but it was extreme fun. My favorite part: someone pointed me to the Simone Attractor on Threads. It is a 2D attractor and I asked GPT to extrapolate it to…
AI · Oct 2025 · blog.shashanktomar.com

Autism Simulator▲779Hey all, I built this. It’s not trying to capture every autistic experience (that’d be impossible). It’s based on my own lived experience as well as that of friends on the spectrum. I'm trying to give people a feel for what masking, decision fatigue, and burnout can look like day-to-day. That’s hard to explain in words, but easier to show through choices and stats. I'm not trying to "define autism". I’ve gotten good feedback here about resilience, meds, and difficulty tuning. I’ll keep tweaking it. If even a few people walk away thinking, "ah, maybe that’s why my coworker struggles in those…
Life & fun · 2025 · autism-simulator.vercel.app
