In the Domain Name System, a LOC record (experimental RFC 1876)[1] is a means for expressing geographic location information for a domain name.
It contains WGS84 Latitude, Longitude and Altitude (ellipsoidal height) information together with host/subnet physical size and location accuracy.
This information can be queried by other computers connected to the Internet.
The LOC record is expressed in a master file in the following format: (The parentheses are used for multi-line data as specified in RFC 1035, section 5.1.)
where: The altitude range provides the following: You can look up the LOC record for any UK postcode, e.g.: