spb.ru has no TXT records.
Question and response
Question
dig spb.ru. TXT
Answer
The response has no answer records.
Authority
spb.ru. 3600 SOA ns3-geo.nic.ru. hostmaster.nic.ru. 388975 7200 900 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0