tel has no TXT records.
Question and response
Question
dig tel. TXT
Answer
The response has no answer records.
Authority
tel. 900 SOA anycast9.irondns.net. dnsmaster.irondns.net. 2602280722 7200 7200 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0