openclass.study - dns.ninja
openclass.study
| DNSSEC | ⚠️ Not signed | ||||||
| A | 192.232.216.157🇺🇸 EIGI192.232.192.0/19 Oracle Corporation | ||||||
| PTR | 192-232-216-157.unifiedlayer.com | ||||||
| NS | ns6143.hostgator.com ⭐ | ||||||
| A | 50.87.144.91🇺🇸 EIGI50.87.144.0/24 Newfold Digital 1958 South 950 East Provo UT 84606 United States | ||||||
| PTR | gator3072.hostgator.com | ||||||
| NS | ns6144.hostgator.com | ||||||
| A | 192.232.216.155🇺🇸 EIGI192.232.192.0/19 Oracle Corporation | ||||||
| PTR | 192-232-216-155.unifiedlayer.com | ||||||
| MX | mail.openclass.study ⭐ | ||||||
| A | 192.232.216.157🇺🇸 EIGI192.232.192.0/19 Oracle Corporation | ||||||
| PTR | 192-232-216-157.unifiedlayer.com | ||||||
| TXT | v=spf1 a mx include:websitewelcome.com ~all | ||||||
| SOA | ns6143.hostgator.comroot@gator3072.hostgator.com 2026-08-26 #1 | ||||||
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=1790358938 | ||||||
Subdomains
mail.openclass.study |
Same first word
Similar names
Previous names
Next names
DNS History
4 records (4 active, 0 former)
●NSns6143.hostgator.com2026-09-07 → 2026-09-25 · 2 obs
● 2026-09-25 18:27:42
●NSns6144.hostgator.com2026-09-07 → 2026-09-25 · 2 obs
● 2026-09-25 18:27:42
●MXmail.openclass.study2026-09-07 → 2026-09-25 · 4 obs
○ 2026-09-22 20:06:12
● 2026-09-22 23:52:38
● 2026-09-25 18:27:42
●A192.232.216.1572026-09-07 → 2026-09-25 · 4 obs
○ 2026-09-22 20:06:12
● 2026-09-22 23:52:38
● 2026-09-25 18:27:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| study | a.nic.study, b.nic.study, c.nic.study, x.nic.study... | 12 records |
| openclass.study | ns6143.hostgator.com, ns6144.hostgator.com | - |
✅ Authoritative Response
Server:192.232.216.155
NS records: ns6143.hostgator.com, ns6144.hostgator.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for openclass.study (unsigned zone)
⏱️ Timing
Total: 655ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.232.216.157 |
| NS | 2 | ns6144.hostgator.com, ns6143.hostgator.com |
| MX | 1 | mail.openclass.study (pri: 0) |
| TXT | 1 | v=spf1 a mx include:websitewelcome.com ~ |
| SOA | 1 | ns6143.hostgator.com root.gator3072.host |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.study, a.nic.study, b.nic.study...)
Analysis
Hierarchy
openclass.study is a parent domain of mail.openclass.study.
IP Addresses
openclass.study has exactly one IP address — 192.232.216.157.
dresden-nazifrei.com, mail.dig-world.org, netmarkexpress.org plus two other host names have IP numbers in common with openclass.study.
Name Servers
openclass.study is served by two delegated name servers, ns6143.hostgator.com and ns6144.hostgator.com.
The name server configuration of openclass.study is shared with other domains, for instance bigideas.com.ph, openclass.academy, foxempower.online and two others.
openclass.study shares at least some of its name servers with other domains, including mynurish.com, festoonsandflourishes.com, intitechsolar.com and two others.
These name servers are frequently seen alongside hgns1.hostgator.com, hgns2.hostgator.com, ns3351.hostgator.com and 7 other name servers.
ns6143.hostgator.com and ns6144.hostgator.com each resolve to one IP number: ns6143.hostgator.com points to 50.87.144.91 and ns6144.hostgator.com points to 192.232.216.155.
Mail Servers
openclass.study uses one mail server — mail.openclass.study.
There is one IP number for mail.openclass.study: 192.232.216.157.