Grid Point Code

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Antananarivo

AnalamangaMadagascar

With a code
#8DPCH-9CK95
Said aloud
Antananarivo 9CK95

Get the code for your door

What the code says

The Grid Point Code for Antananarivo is #8DPCH-9CK95. It names a cell 2.56 m north to south and 3.24 m east to west, centred on 18°54'49.27"S, 47°32'10.11"E, 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 Antananarivo, near its centre, and Antananarivo is the capital of Madagascar.

Code
#8DPCH-9CK95
With a check character
#8DPCH-9CK95*8
Short form
9CK95
Cell centre
-18.913686, 47.536143
Cell size
2.56 m by 3.24 m
Region
Analamanga
Country
Madagascar
Population
1,349,501

How to give this address

On a sign, a form or a delivery note

The whole code, #8DPCH-9CK95. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Analamanga

Antananarivo 9CK95: 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 5.1 km east or west of Antananarivo. 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

#8DPCH-9CK95*8. 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 50.5 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.

  1. 8DPCMetropolitan area40 km by 50.5 km
  2. 8DPCHDistrict8 km by 10.1 km
  3. 8DPCH9Suburb1.6 km by 2.02 km
  4. 8DPCH9CA few streets320 m by 404 m
  5. 8DPCH9CKBuilding64 m by 80.9 m
  6. 8DPCH9CK9Entrance12.8 m by 16.2 m
  7. 8DPCH9CK95Doorway2.56 m by 3.24 m

More in Madagascar

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