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:101:1-2020012911291692921819
	http://digdok.bib.thm.de/volltexte/2020/5352/ RESTEASY004655: Unable to invoke request: org.apache.http.conn.ConnectTimeoutException: Connect to digdok.bib.thm.de:80 [digdok.bib.thm.de/212.201.8.16] failed: Connect timed out
	http://d-nb.info/120373610X/34 STATUS : 301 → Redirecting to : https://d-nb.info/120373610X/34
	https://d-nb.info/120373610X/34 STATUS : 404 → Skipping : https://d-nb.info/120373610X/34

Please contact us if you experience any errors with the URN.