With this function, the resolver checks all associated URLs and marks them either with a green tick or, in the event of an error, with a red cross. Users are redirected to the first URL marked in green.

Analyse	urn:nbn:de:101:1-2017121321975
	http://www.halem-verlag.de/security-first/ STATUS : 301 → Redirecting to : https://www.halem-verlag.de/security-first/
	https://www.halem-verlag.de/security-first/ STATUS : 301 → Redirecting to : https://www.halem-verlag.de/produkt/security-first/
	https://www.halem-verlag.de/produkt/security-first/ Success. Document available.
	https://d-nb.info/1148612831/34 Success. Document available.

Please contact the responsible organisation if you experience any errors with the URLs.