Nantes

Pays de la LoireFrance

With a code: #R098R-JXT64
Said aloud: Nantes JXT64

What the code says

The Grid Point Code for Nantes is #R098R-JXT64. It names a cell 2.56 m north to south and 2.32 m east to west, centred on 47°13'02.07"N, 1°33'12.14"W, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

The point used is the one GeoNames records for Nantes, near its centre.

Code: #R098R-JXT64
With a check character: #R098R-JXT64*0
Short form: JXT64
Cell centre: 47.217243, -1.553372
Cell size: 2.56 m by 2.32 m
Region: Pays de la Loire
Country: France
Population: 325,070

How to give this address

On a sign, a form or a delivery note: The whole code, #R098R-JXT64. It needs nothing else: no city, no street, no network to read it back.
Said aloud, in Pays de la Loire: Nantes JXT64: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 3.6 km east or west of Nantes. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.
Copied by hand, or read over a phone: #R098R-JXT64*0. The character on the end catches any single mistyped symbol and any two neighbours swapped.
As a link or a square code: Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 36.3 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

R098Metropolitan area40 km by 36.3 km
R098RDistrict8 km by 7.26 km
R098RJSuburb1.6 km by 1.45 km
R098RJXA few streets320 m by 290 m
R098RJXTBuilding64 m by 58.1 m
R098RJXT6Entrance12.8 m by 11.6 m
R098RJXT64Doorway2.56 m by 2.32 m

More in France

City, region and population from GeoNames, under CC BY 4.0.