The SRTM OGC Web Map Service provides Digital Elevation Model (DEM) map from SRTM v4.
EnerGEO Catalogue
energeo.researchstudio.at/geoportal/catalog/main/home.page
Get Capability URL:
http://www.webservice-energy.org/mapserv/srtm?service=WMS&request=GetCapabilities
Web Service Type: