LOC resource record
With a LOC resource record , a precise position is assigned to a name . A geometrical location is determined exactly using length, width and height information. In order to enable spatially extended location definitions, a virtual sphere can be defined by specifying a radius around this point.
As with GPS, the WGS84 is used as the coordinate system .
LOC-RRs can be used, for example, to geographically track the path of an IP packet . The specification is documented in RFC 1876 .
construction
- Surname
- Name of the object to which the location refers
- TTL
- specifies how long this entry can be kept in the cache
- IN
- Internet
- LOC
- d1 m1 s1 N / S
- Latitude in degrees, minutes, seconds, north or south
- d2 m2 s2 E / W
- Longitude in degrees, minutes, seconds, east (= E ) or west
- height
- Height in centimeters; negative values are allowed
- radius
- hp
- horizontal error deviation
- vp
- vertical error deviation
particularities
- m1 , s1 , m2 and s2 can be omitted. In this case they are assumed to be 0.
- Rear height , radius , hp and mp must the letter m will be inserted (meters)
- Radius , hp and mp are optional
example
server1.example.com 3600 IN LOC 34 15 28 S 72 8 0 W -5m
Web links
- further information on the topic in English (possibility to query LOC records online, currently not working)
- Online DNS location lookup