In settings of Secondary service, you need to enter IP address of primary DNS server for zone transfer.
You need to enter the following names of DNS servers when delegating domains of:
For domains such as domain.ru
| ns4-l2.nic.ru | 91.217.20.1 |
| ns8-l2.nic.ru | 91.217.21.1 |
| ns4-cloud.nic.ru | 185.42.137.111 2a01:3f0:400::62 |
| ns8-cloud.nic.ru | 194.58.196.62 2a01:3f1:862::53 |
For domains such as domain.msk.ru
| ns4-l3.nic.ru | 91.217.20.5 |
| ns8-l3.nic.ru | 91.217.21.5 |
For domains such as sub.domain.spb.ru
| ns4-l4.nic.ru | 91.217.20.9 |
| ns8-l4.nic.ru | 91.217.21.9 |
For domains such as sub.sub.domain.spb.ru
| ns4-l5.nic.ru | 91.217.20.13 |
| ns8-l5.nic.ru | 91.217.21.13 |
Allow zone transfers for the following IP addresses:
| 91.217.20.0/26 |
| 91.217.21.0/26 |
| 194.226.96.192/28 |
| 31.177.66.192/28 |
In order for the domain's zone file to be promptly stored, you need to configure the primary DNS server for sending a NOTIFY message to these servers.
If you do not configure the primary DNS server for sending a NOTIFY message to the aforementioned servers, your modified zone file will appear on the servers ns4-l*.nic.ru and ns8-l*.nic.ru according to the value of the Refresh parameter in the SOA record, but not earlier than 1 hour.