cortex.study - robtex.com
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=1788334304 | ||||||
Same first word
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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 07:44:44
●NSns-cloud-a2.googledomains.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●NSns-cloud-a3.googledomains.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●NSns-cloud-a4.googledomains.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●MXalt1.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●MXalt2.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●MXalt3.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●MXalt4.aspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●MXaspmx.l.google.com2026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
●A216.198.79.12026-08-26 → 2026-09-02 · 2 obs
● 2026-09-02 07:44:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| study | y.nic.study, c.nic.study, a.nic.study, b.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:216.239.36.106
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: 802ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.198.79.1 |
| NS | 4 | ns-cloud-a4.googledomains.com, ns-cloud-a2.googledomains.com... |
| MX | 5 | aspmx.l.google.com (pri: 1), alt4.aspmx.l.google.com (pri: 10)... |
| TXT | 2 | stripe-verification=28e2b8f9a34869cbbd66, google-site-verification=JpCfA-HBYL_xQGd |
| 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 directs to one IP number, which is 216.198.79.1.
Among the host names that share IP numbers with cortex.study are rozmluv.se, kishandave.com, stephendelrosario.com and two others.
Name Servers
The domain cortex.study is delegated to these 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.
cortex.study shares at least some of its mail servers with other domains — for example corerealtyfl.com, hoteldepot.ca, brandform.technology and two more.
It is common for these mail servers to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.
Hosts with two IP numbers each:
aspmx.l.google.com resolves to two addresses: 172.253.62.26 and 2607:f8b0:4004:c21::1b.
alt1.aspmx.l.google.com resolves to two addresses: 192.178.234.27 and 2800:3f0:4003:c14::1a.
alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1a.
alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.26 and 2a00:1450:400c:c23::1a.