_spf_web.majordomo.ru has no NS records.
NS records for this zone are defined at majordomo.ru.
NS records for this zone are defined at majordomo.ru.
Question and response
Question
dig _spf_web.majordomo.ru. NS
Answer
The response has no answer records.
Authority
majordomo.ru. 3600 SOA ns.majordomo.ru. support.majordomo.ru. 2026021600 10800 3600 432000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0