cortex.study - dns.ninja
cortex.study
study
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.study ⭐ | ||||||
| NS | b.nic.study | ||||||
| NS | c.nic.study | ||||||
| NS | x.nic.study | ||||||
| NS | y.nic.study | ||||||
| NS | z.nic.study | ||||||
| SOA | a.nic.studyadmin@tldns.godaddy serial=1788338400 | ||||||
Same first word
Similar names
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DNS History
10 records (10 active, 0 former)
●NSns-cloud-a1.googledomains.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●NSns-cloud-a2.googledomains.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●NSns-cloud-a3.googledomains.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●NSns-cloud-a4.googledomains.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●MXalt1.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●MXalt2.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●MXalt3.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●MXalt4.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●MXaspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
●A216.198.79.12026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 09:25:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| study | y.nic.study, b.nic.study, c.nic.study, a.nic.study... | 12 records |
| cortex.study | ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com | - |
✅ Authoritative Response
Server:216.239.32.106
NS records: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cortex.study (unsigned zone)
⏱️ Timing
Total: 697ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.198.79.1 |
| NS | 4 | ns-cloud-a4.googledomains.com, ns-cloud-a1.googledomains.com... |
| MX | 5 | aspmx.l.google.com (pri: 1), alt4.aspmx.l.google.com (pri: 10)... |
| TXT | 2 | google-site-verification=JpCfA-HBYL_xQGd, stripe-verification=28e2b8f9a34869cbbd66 |
| SOA | 1 | ns-cloud-a1.googledomains.com cloud-dns- |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.study, b.nic.study, c.nic.study...)
Analysis
IP Addresses
cortex.study resolves to just one IP address, 216.198.79.1.
Two other host names, along with rozmluv.se, kishandave.com and stephendelrosario.com, also share IP numbers with cortex.study.
Name Servers
The NS records for cortex.study point to four name servers: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com and ns-cloud-a4.googledomains.com.
cortex.study partially shares its NS delegation with several other domains, including tpyomag.com, mayilahlimited.com, lomea.nz and two others.
ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com and ns-cloud-a4.googledomains.com each carry two IP addresses. ns-cloud-a1.googledomains.com has 216.239.32.106 and 2001:4860:4802:32::6a; ns-cloud-a2.googledomains.com has 216.239.34.106 and 2001:4860:4802:34::6a; ns-cloud-a3.googledomains.com has 216.239.36.106 and 2001:4860:4802:36::6a; ns-cloud-a4.googledomains.com has 216.239.38.106 and 2001:4860:4802:38::6a.
Mail Servers
cortex.study is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
There is at least a partial MX overlap between cortex.study and other domains, including corerealtyfl.com, hoteldepot.ca, brandform.technology and two others.
alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.
Host names that have two IP addresses:
The A records for aspmx.l.google.com return 192.179.18.27 and 2607:f8b0:4004:c1b::1a.
The A records for alt1.aspmx.l.google.com return 192.178.234.27 and 2800:3f0:4003:c14::1b.
The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1b.
The A records for alt3.aspmx.l.google.com return 192.178.223.26 and 2a00:1450:4009:c0f::1a.
The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1a.