api.echo.nasa.gov has been retired. Please direct requests to cmr.earthdata.nasa.gov

1. api.echo.nasa.gov/echo-v10 should now be cmr.earthdata.nasa.gov/legacy-services/echo-v10

2. api.echo.nasa.gov/echo-rest should now be cmr.earthdata.nasa.gov/legacy-services/rest

3. api.echo.nasa.gov/catalog-rest should now be cmr.earthdata.nasa.gov/catalog-rest