DNS audit for zilab.ru created on 2026-06-08 20:39:45
1. Name servers
Name servers listed at the parent server a.dns.ripn.net:
ns3-l2.nic.runs4-cloud.nic.ru
ns4-l2.nic.ru
ns8-cloud.nic.ru
ns8-l2.nic.ru
Result: 5 name servers found at the parent server (set at the domain provider).
Recommendation:
Everything is okay. There is more than one name server added to zilab.ru.
2. NS records
NS records returned by each name server configured for the domain name
| Sydney, AU | Johannesburg, ZA | Singapore |
|---|---|---|
|
ns3-l2.nic.ru [193.232.146.1] (296ms):
ns4-cloud.nic.ru [89.104.93.33] (284ms):
ns4-cloud.nic.ru [89.104.95.30] (295ms):
ns4-cloud.nic.ru [89.104.95.34] (295ms):
ns4-cloud.nic.ru [89.104.93.34] (283ms):
ns4-cloud.nic.ru [89.104.93.30] (282ms):
ns4-cloud.nic.ru [89.104.95.33] (285ms):
ns4-l2.nic.ru [91.217.20.20] (261ms):
ns8-cloud.nic.ru [89.104.95.35] (287ms):
ns8-cloud.nic.ru [89.104.93.31] (286ms):
ns8-cloud.nic.ru [89.104.95.36] (288ms):
ns8-cloud.nic.ru [89.104.93.35] (282ms):
ns8-cloud.nic.ru [89.104.95.31] (294ms):
ns8-cloud.nic.ru [89.104.93.36] (282ms):
ns8-l2.nic.ru [91.217.21.20] (300ms): |
ns3-l2.nic.ru [193.232.146.1] (208ms):
ns4-cloud.nic.ru [89.104.93.33] (196ms):
ns4-cloud.nic.ru [89.104.95.34] (200ms):
ns4-cloud.nic.ru [89.104.95.30] (196ms):
ns4-cloud.nic.ru [89.104.93.30] (196ms):
ns4-cloud.nic.ru [89.104.93.34] (200ms):
ns4-cloud.nic.ru [89.104.95.33] (196ms):
ns4-l2.nic.ru [91.217.20.20] (200ms):
ns8-cloud.nic.ru [89.104.95.31] (196ms):
ns8-cloud.nic.ru [89.104.93.35] (196ms):
ns8-cloud.nic.ru [89.104.95.35] (200ms):
ns8-cloud.nic.ru [89.104.93.36] (196ms):
ns8-cloud.nic.ru [89.104.95.36] (204ms):
ns8-cloud.nic.ru [89.104.93.31] (204ms):
ns8-l2.nic.ru [91.217.21.20] (208ms): |
ns3-l2.nic.ru [193.232.146.1] (time out 2000ms)
ns4-cloud.nic.ru [89.104.95.33] (202ms):
ns4-cloud.nic.ru [89.104.95.34] (201ms):
ns4-cloud.nic.ru [89.104.93.30] (213ms):
ns4-cloud.nic.ru [89.104.93.33] (212ms):
ns4-cloud.nic.ru [89.104.93.34] (210ms):
ns4-cloud.nic.ru [89.104.95.30] (201ms):
ns4-l2.nic.ru [91.217.20.20] (212ms):
ns8-cloud.nic.ru [89.104.93.36] (221ms):
ns8-cloud.nic.ru [89.104.95.31] (189ms):
ns8-cloud.nic.ru [89.104.95.35] (194ms):
ns8-cloud.nic.ru [89.104.95.36] (191ms):
ns8-cloud.nic.ru [89.104.93.31] (214ms):
ns8-cloud.nic.ru [89.104.93.35] (221ms):
ns8-l2.nic.ru [91.217.21.20] (213ms): |
Result: The NS records returned by the DNS servers are not the same as the name servers set at the parent server.
Recommendation: Check the synchronization between the DNS servers. Returned NS records must be exactly the same as these returned by the parent server.
3. SOA record
SOA record returned by each name server configured for the domain name
| Sydney, AU |
|---|
|
ns3-l2.nic.ru [193.232.146.1] (281ms):
ns4-cloud.nic.ru [89.104.95.34] (288ms):
ns4-cloud.nic.ru [89.104.93.33] (295ms):
ns4-cloud.nic.ru [89.104.95.33] (284ms):
ns4-cloud.nic.ru [89.104.93.34] (286ms):
ns4-cloud.nic.ru [89.104.95.30] (284ms):
ns4-cloud.nic.ru [89.104.93.30] (286ms):
ns4-l2.nic.ru [91.217.20.20] (268ms):
ns8-cloud.nic.ru [89.104.95.35] (283ms):
ns8-cloud.nic.ru [89.104.93.31] (297ms):
ns8-cloud.nic.ru [89.104.95.31] (286ms):
ns8-cloud.nic.ru [89.104.93.35] (296ms):
ns8-cloud.nic.ru [89.104.95.36] (285ms):
ns8-cloud.nic.ru [89.104.93.36] (282ms):
ns8-l2.nic.ru [91.217.21.20] (303ms): |
| Johannesburg, ZA |
|---|
|
ns3-l2.nic.ru [193.232.146.1] (208ms):
ns4-cloud.nic.ru [89.104.95.30] (196ms):
ns4-cloud.nic.ru [89.104.93.30] (204ms):
ns4-cloud.nic.ru [89.104.95.34] (200ms):
ns4-cloud.nic.ru [89.104.93.33] (200ms):
ns4-cloud.nic.ru [89.104.95.33] (196ms):
ns4-cloud.nic.ru [89.104.93.34] (208ms):
ns4-l2.nic.ru [91.217.20.20] (208ms):
ns8-cloud.nic.ru [89.104.93.36] (196ms):
ns8-cloud.nic.ru [89.104.95.35] (196ms):
ns8-cloud.nic.ru [89.104.95.36] (200ms):
ns8-cloud.nic.ru [89.104.95.31] (200ms):
ns8-cloud.nic.ru [89.104.93.35] (200ms):
ns8-cloud.nic.ru [89.104.93.31] (200ms):
ns8-l2.nic.ru [91.217.21.20] (220ms): |
| Singapore |
|---|
|
ns3-l2.nic.ru [193.232.146.1] (time out 2000ms)
ns4-cloud.nic.ru [89.104.95.30] (199ms):
ns4-cloud.nic.ru [89.104.95.33] (191ms):
ns4-cloud.nic.ru [89.104.95.34] (202ms):
ns4-cloud.nic.ru [89.104.93.30] (222ms):
ns4-cloud.nic.ru [89.104.93.33] (209ms):
ns4-cloud.nic.ru [89.104.93.34] (212ms):
ns4-l2.nic.ru [91.217.20.20] (212ms):
ns8-cloud.nic.ru [89.104.93.31] (210ms):
ns8-cloud.nic.ru [89.104.93.35] (213ms):
ns8-cloud.nic.ru [89.104.93.36] (210ms):
ns8-cloud.nic.ru [89.104.95.31] (190ms):
ns8-cloud.nic.ru [89.104.95.35] (193ms):
ns8-cloud.nic.ru [89.104.95.36] (197ms):
ns8-l2.nic.ru [91.217.21.20] (216ms): |
Result: The SOA record returned by the name servers is not the same on all of them.
Recommendation: Check the synchronization between the DNS servers. Returned SOA record must be exactly the same on all DNS servers.
4. A record distribution by location for zilab.ru
Shows how the name servers respond to requests for zilab.ru
| Sydney, AU | Johannesburg, ZA | Singapore |
|---|---|---|
|
ns3-l2.nic.ru [193.232.146.1] (292ms):
ns4-cloud.nic.ru [89.104.95.33] (286ms):
ns4-cloud.nic.ru [89.104.95.30] (285ms):
ns4-cloud.nic.ru [89.104.95.34] (286ms):
ns4-cloud.nic.ru [89.104.93.34] (284ms):
ns4-cloud.nic.ru [89.104.93.30] (297ms):
ns4-cloud.nic.ru [89.104.93.33] (283ms):
ns4-l2.nic.ru [91.217.20.20] (259ms):
ns8-cloud.nic.ru [89.104.93.36] (291ms):
ns8-cloud.nic.ru [89.104.93.31] (286ms):
ns8-cloud.nic.ru [89.104.95.36] (287ms):
ns8-cloud.nic.ru [89.104.93.35] (297ms):
ns8-cloud.nic.ru [89.104.95.35] (284ms):
ns8-cloud.nic.ru [89.104.95.31] (291ms):
ns8-l2.nic.ru [91.217.21.20] (320ms): |
ns3-l2.nic.ru [193.232.146.1] (208ms):
ns4-cloud.nic.ru [89.104.93.30] (196ms):
ns4-cloud.nic.ru [89.104.93.34] (196ms):
ns4-cloud.nic.ru [89.104.95.30] (196ms):
ns4-cloud.nic.ru [89.104.95.33] (200ms):
ns4-cloud.nic.ru [89.104.93.33] (208ms):
ns4-cloud.nic.ru [89.104.95.34] (196ms):
ns4-l2.nic.ru [91.217.20.20] (200ms):
ns8-cloud.nic.ru [89.104.95.36] (200ms):
ns8-cloud.nic.ru [89.104.95.31] (200ms):
ns8-cloud.nic.ru [89.104.93.31] (200ms):
ns8-cloud.nic.ru [89.104.93.36] (208ms):
ns8-cloud.nic.ru [89.104.93.35] (200ms):
ns8-cloud.nic.ru [89.104.95.35] (204ms):
ns8-l2.nic.ru [91.217.21.20] (204ms): |
ns3-l2.nic.ru [193.232.146.1] (time out 2000ms)
ns4-cloud.nic.ru [89.104.93.33] (211ms):
ns4-cloud.nic.ru [89.104.93.34] (212ms):
ns4-cloud.nic.ru [89.104.95.30] (201ms):
ns4-cloud.nic.ru [89.104.95.33] (193ms):
ns4-cloud.nic.ru [89.104.95.34] (191ms):
ns4-cloud.nic.ru [89.104.93.30] (212ms):
ns4-l2.nic.ru [91.217.20.20] (213ms):
ns8-cloud.nic.ru [89.104.95.31] (198ms):
ns8-cloud.nic.ru [89.104.95.35] (209ms):
ns8-cloud.nic.ru [89.104.95.36] (192ms):
ns8-cloud.nic.ru [89.104.93.31] (213ms):
ns8-cloud.nic.ru [89.104.93.35] (213ms):
ns8-cloud.nic.ru [89.104.93.36] (210ms):
ns8-l2.nic.ru [91.217.21.20] (215ms): |
5. A record distribution by location for www.zilab.ru
Shows how the name servers respond to requests for www.zilab.ru
| Sydney, AU | Johannesburg, ZA | Singapore |
|---|---|---|
|
ns3-l2.nic.ru [193.232.146.1] (285ms):
ns4-cloud.nic.ru [89.104.93.34] (291ms):
ns4-cloud.nic.ru [89.104.93.33] (284ms):
ns4-cloud.nic.ru [89.104.95.30] (285ms):
ns4-cloud.nic.ru [89.104.93.30] (285ms):
ns4-cloud.nic.ru [89.104.95.34] (287ms):
ns4-cloud.nic.ru [89.104.95.33] (283ms):
ns4-l2.nic.ru [91.217.20.20] (272ms):
ns8-cloud.nic.ru [89.104.95.35] (289ms):
ns8-cloud.nic.ru [89.104.93.31] (286ms):
ns8-cloud.nic.ru [89.104.95.36] (284ms):
ns8-cloud.nic.ru [89.104.93.35] (296ms):
ns8-cloud.nic.ru [89.104.93.36] (285ms):
ns8-cloud.nic.ru [89.104.95.31] (287ms):
ns8-l2.nic.ru [91.217.21.20] (296ms): |
ns3-l2.nic.ru [193.232.146.1] (208ms):
ns4-cloud.nic.ru [89.104.93.30] (200ms):
ns4-cloud.nic.ru [89.104.93.34] (200ms):
ns4-cloud.nic.ru [89.104.95.34] (196ms):
ns4-cloud.nic.ru [89.104.93.33] (208ms):
ns4-cloud.nic.ru [89.104.95.30] (200ms):
ns4-cloud.nic.ru [89.104.95.33] (200ms):
ns4-l2.nic.ru [91.217.20.20] (208ms):
ns8-cloud.nic.ru [89.104.95.35] (196ms):
ns8-cloud.nic.ru [89.104.93.35] (204ms):
ns8-cloud.nic.ru [89.104.93.31] (200ms):
ns8-cloud.nic.ru [89.104.93.36] (196ms):
ns8-cloud.nic.ru [89.104.95.36] (196ms):
ns8-cloud.nic.ru [89.104.95.31] (200ms):
ns8-l2.nic.ru [91.217.21.20] (212ms): |
ns3-l2.nic.ru [193.232.146.1] (210ms):
ns4-cloud.nic.ru [89.104.95.34] (189ms):
ns4-cloud.nic.ru [89.104.93.30] (213ms):
ns4-cloud.nic.ru [89.104.93.33] (222ms):
ns4-cloud.nic.ru [89.104.93.34] (210ms):
ns4-cloud.nic.ru [89.104.95.30] (195ms):
ns4-cloud.nic.ru [89.104.95.33] (193ms):
ns4-l2.nic.ru [91.217.20.20] (214ms):
ns8-cloud.nic.ru [89.104.95.35] (192ms):
ns8-cloud.nic.ru [89.104.95.36] (192ms):
ns8-cloud.nic.ru [89.104.93.31] (212ms):
ns8-cloud.nic.ru [89.104.93.35] (213ms):
ns8-cloud.nic.ru [89.104.93.36] (211ms):
ns8-cloud.nic.ru [89.104.95.31] (199ms):
ns8-l2.nic.ru [91.217.21.20] (228ms): |
6. Speed
Result: During the checks in the previous steps, multiple DNS requests were executed to the name servers responsible for the domain name. Average response time of the name servers is 271.42ms.
Recommendation: The name servers respond slow. Try moving to an Anycast DNS service in order to speed up the resolution of the domain name and first page load of the web site.