Open dataThe coarse atlas, free for research, journalism, education and cities, CC BY-NC-SA 4.0

Researchers, journalists, students and city planners can take the network's coverage footprint and use it. This dataset is the coarse layer: one row per H3 cell at resolution 6, about 36 square kilometres each, with how many fine hexes inside it are measured, which layers, and when. Cells with fewer than 5 measured hexes are left out. No exact hexes, no readings, no device identities, no routes. Rebuilt once a day.

Download CSV JSON RSS feed

In this release

Cells published

135

Cells below the floor

Fine hexes inside

3,173

Built

2026-10-02T06:06 UTC

Columns

h3_res6	H3 cell index at resolution 6. Convert to a polygon with any H3 library (h3-js, h3-py, PostGIS h3).
lat, lon	Centre of the cell in degrees, so the file can be plotted without an H3 library.
country_code	ISO country of most measured hexes in the cell, from OpenStreetMap place names. Empty when not resolved.
hexes_measured_res9	How many resolution-9 hexes (about 170 m across) inside the cell have at least one accepted measurement.
layers	Pipe-separated layer keys present anywhere in the cell: ble, wifi, cellular, gnss, magnetic, pressure, light, noise, spectrum, traffic.
first_measured, last_measured	Dates (UTC day) of the first and most recent accepted measurement in the cell.
accepted_samples	Total accepted samples across all layers in the cell.

Licence and attribution

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 (CC BY-NC-SA 4.0). Free for research, journalism, education, public bodies and personal projects. You must credit Invisible Atlas, you may not use it commercially, and anything you build from it must be shared under the same licence. Commercial use, and the fine-grained atlas (resolution-9 hexes with per-layer readings, the same source, not the same file), are licensed separately to organisations through the Enterprise Portal; that is what pays for the trees, the ocean cleanups and the eSIMs.

How to credit

Anywhere the data or a map made from it appears, add one line with a link:

Data: Invisible Atlas Open Atlas, https://blescan.sevinhub.com/stats.php?opendata=1, CC BY-NC-SA 4.0

For a paper or a report, cite it as a dataset:

SevinHub (2026). Invisible Atlas Open Atlas: coverage footprint of a phone-measured wireless network, H3 resolution 6, snapshot of 2026-10-02. https://blescan.sevinhub.com/stats.php?opendata=1. Licensed CC BY-NC-SA 4.0.

If you changed the data, say so ("adapted from"). If you want to use it commercially, write to admin@sevinhub.com.

Badges for your site

<img src="https://blescan.sevinhub.com/stats.php?badge=network" alt="Invisible Atlas network">
<img src="https://blescan.sevinhub.com/stats.php?badge=Antwerp" alt="Antwerp on Invisible Atlas">

Live since 2026-08-09 17:20:11 UTC. Every number above is an exact count over the same database Explorer and Live Map read, never an estimate. Some pages are refreshed on a schedule rather than on every visit (Records every ten minutes, Heartbeat every minute, Open data once a day) and say so. Node counts only, never identities. See the privacy policy for what is and is not collected, and the terms of use for what may be done with it.