Hello IRIS DMC Data User:
 You have arrived at the location where we used to store RESP format instrument
response files. Effective January 2020, this location is no longer supported or maintained.

It is recommended that you use the webservice located at 
http://service.iris.edu/irisws/resp/docs/1/builder/
to report the best, and most recent, RESP format files.
http://service.iris.edu/fdsnws/station/docs/1/builder/
For FDSN StationXML format

Or send breq_fast requests send to dataless@iris.washington.edu
Validate xml or dataless-seed
stationxml-validator -- need to get the final link for download and usages
https://github.com/iris-edu/stationxml-validator

Converse xml to dataless-seed or dataless-seed to xml
stationxml-seed-converter -- need to get the final link for download and usages
https://github.com/iris-edu/stationxml-seed-converter


You can also use FetchScript to download miniseed or metadata

Here are some examples 
miniSEED and Metadata:
FetchData -F IRISDMC -N network -S station -C 'HH?' -s YYYY-MM-DDTHH:MM:SS -e YYYY-MM-DDTHH:MM:SS -o station.mseed  -a Email:AuthorizePass -X station.xml -m station.meta

miniSEED  only:
FetchData -F IRISDMC -N network -S station -C 'HH?' -s YYYY-MM-DDTHH:MM:SS -e YYYY-MM-DDTHH:MM:SS -o label.mseed -a Email:AuthorizePass

Metadata only:
FetchData -F IRISDMC -N network -S station -C 'HH?' -s YYYY-MM-DDTHH:MM:SS -e YYYY-MM-DDTHH:MM:SS -X label.xml -m label.meta

 We appreciate your understanding.

-Rick Benson
IRIS DMC
Director of Operations