cortex.su - dns.ninja
cortex.su
| DNSSEC | ⚠️ Not signed | ||||||
| A | 176.57.64.51🇧🇦 DDOS-GUARD176.57.64.0/23 | ||||||
| NS | vps-11036334-444279.host4g.ru ⭐ | ||||||
| NS | ns1.rsnx.ru | ||||||
| A | 89.253.252.13🇷🇺 RUSONYX-AS89.253.248.0/21 RUSONYX-RU | ||||||
| PTR | ns1.rsnx.ru | ||||||
| NS | ns2.rsnx.ru | ||||||
| A | 89.253.252.15🇷🇺 RUSONYX-AS89.253.248.0/21 RUSONYX-RU | ||||||
| PTR | ns2.rsnx.ru | ||||||
| MX | mx.yandex.net ⭐ | ||||||
| A | 2a02:6b8::311🇷🇺 TELETECH2a02:6b8::/32 Yandex network | ||||||
| PTR | mxfront.stable.qloud-b.yandex.net | ||||||
| A | 77.88.21.249🇷🇺 TELETECH77.88.0.0/18 Yandex enterprise network | ||||||
| PTR | mxfront.stable.qloud-b.yandex.net | ||||||
| TXT | v=spf1 +a +mx -all | ||||||
| SOA | vps-11036334-444279.host4g.rudubdeniss@yandex.ru 2024-09-04 #10 | ||||||
su
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.ripn.net ⭐ | ||||||
| NS | b.dns.ripn.net | ||||||
| NS | d.dns.ripn.net | ||||||
| NS | e.dns.ripn.net | ||||||
| NS | f.dns.ripn.net | ||||||
| SOA | a.dns.ripn.nethostmaster@ripn.net serial=650209421 | ||||||
Subdomains
mail.cortex.su |
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
●NSns1.rsnx.ru2026-03-24 → 2026-06-10 · 3 obs
● 2026-03-24 19:15:04
● 2026-06-10 05:07:26
○NSns1.rusonyx.ru2015-05-18 → 2016-04-08 · 4 obs
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-06-10 05:07:26
●NSns2.rsnx.ru2026-03-24 → 2026-06-10 · 3 obs
● 2026-03-24 19:15:04
● 2026-06-10 05:07:26
○NSns2.rusonyx.ru2015-05-18 → 2016-04-08 · 4 obs
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-06-10 05:07:26
●NSvps-11036334-444279.host4g.ru2026-03-24 → 2026-06-10 · 3 obs
● 2026-03-24 19:15:04
● 2026-06-10 05:07:26
○MXmail.cortex.su2015-05-18 → 2016-04-08 · 4 obs
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-06-10 05:07:26
●MXmx.yandex.net2026-03-24 → 2026-06-10 · 3 obs
● 2026-03-24 19:15:04
● 2026-06-10 05:07:26
●A176.57.64.512026-03-24 → 2026-06-10 · 3 obs
● 2026-03-24 19:15:04
● 2026-06-10 05:07:26
○A89.253.247.222015-05-18 → 2016-04-08 · 4 obs
● 2016-04-08 20:16:40
○ 2026-03-24 19:15:04
○ 2026-06-10 05:07:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | 10 records |
| cortex.su | ns1.rsnx.ru, ns2.rsnx.ru | - |
✅ Authoritative Response
Server:89.253.252.15
NS records: ns1.rsnx.ru, ns2.rsnx.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cortex.su (unsigned zone)
⏱️ Timing
Total: 1149ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 176.57.64.51 |
| NS | 2 | ns1.rsnx.ru, ns2.rsnx.ru |
| MX | 1 | mx.yandex.net (pri: 10) |
| TXT | 1 | v=spf1 +a +mx -all |
| SOA | 1 | vps-11036334-444279.host4g.ru dubdeniss. |
📌 Glue Records Collected
Total: 10
Out-of-bailiwick: 10 (a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net...)
Analysis
Hierarchy
mail.cortex.su is a subdomain of cortex.su.
IP Addresses
cortex.su has exactly one IP address — 176.57.64.51.
l-ps.ru, nevskiemastera.ru, www.xn--80aaf6atxr3a.xn--p1ai plus two other host names have IP numbers in common with cortex.su.
Name Servers
cortex.su carries NS records delegating to vps-11036334-444279.host4g.ru, ns1.rsnx.ru and ns2.rsnx.ru.
The name servers of cortex.su overlap at least partially with those of other domains — among them ikstudio.ru, rakurs.ru, filmgear.ru and two more.
These name servers tend to appear in conjunction with dns1.zenon.net, dns2.zenon.net, sni2.rusonyx.ru and seven others.
Both ns1.rsnx.ru and ns2.rsnx.ru have a single IP address each — ns1.rsnx.ru resolves to 89.253.252.13 while ns2.rsnx.ru resolves to 89.253.252.15.
Mail Servers
cortex.su uses one mail server — mx.yandex.net.
The mail server setup of cortex.su matches that of other domains such as sense.com.tr, cigarday.ru, hz.com.vn and two others.
At least some of the mail servers used by cortex.su are shared with other domains: rusremont-kvartir.ru, krc-briz.ru, idnps.ru and two others among them.
mx.yandex.net resolves to two IP numbers — 77.88.21.249 and 2a02:6b8::311.