These are data codes for Switzerland. See country code for a fuller explanation.

CH

ISO country code (ISO 3166-1 alpha-2,two letter)

Country code TLD

Distinguishing sign of vehicles in international traffic

CHE

ISO country code (ISO 3166-1 alpha-3, three letter code)

756

ISO country code (ISO 3166-1 numeric, numeric code)

SUI

IOC country code

ITU letter codes for member-countries

SW 

WMO message header country code

SZ 

FIPS country code

Library of Congress machine-readable cataloguing country code

41 

Country calling code

228 

E.212 Mobile country code

269 

ITU maritime identification digits

EO39 

Nomenclature des unités territoriales statistiques (NUTS)

HB 

ICAO aircraft registration prefix (since 1935, before: CH)

LS 

ICAO nationality letters for location indicators

HBA-HBZ,
HEA-HEZ

ITU callsign prefix

760-769

EAN-UCC prefix of GTIN (barcodes) by EAN Switzerland

See also: Country codes: S#Switzerland, List of postal codes in Switzerland