istel.ru.		30 IN SOA ns.iskratelecom.ru. postmaster.ns.istel.ru. (
				2021041501 ; serial
				86400      ; refresh (1 day)
				6000       ; retry (1 hour 40 minutes)
				864000     ; expire (1 week 3 days)
				86400      ; minimum (1 day)
				)

istel.ru.		30 IN A	81.200.2.236

Mail exchangers:
istel.ru.		30 IN MX 10 mx9.cpx.ru.

Name servers:
istel.ru.		30 IN NS ns.iskratelecom.ru.
istel.ru.		30 IN NS ns2.iskratelecom.ru.