cc.colocenter.nl has no TXT records.
Question and response
Question
dig cc.colocenter.nl. TXT
Answer
cc.colocenter.nl. 300 CNAME server01.colocenter.nl.
Authority
colocenter.nl. 3600 SOA ns1.colocenter.nl. hostmaster.colocenter.nl. 2025040247 3600 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0