masterclass.courses - dns.ninja
masterclass.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 64.190.63.222🇩🇪 SEDO64.190.62.0/23 -NET2-PI | ||||||
| NS | ns1.sedoparking.com ⭐ | ||||||
| A | 3.130.216.63🇺🇸 Amazon3.130.0.0/16 EC2 CMH prefix | ||||||
| PTR | ec2-3-130-216-63.us-east-2.compute.amazonaws.com | ||||||
| A | 91.195.241.8🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| NS | ns2.sedoparking.com | ||||||
| A | 34.211.188.210🇺🇸 Amazon34.208.0.0/12 EC2 PDX prefix | ||||||
| PTR | ec2-34-211-188-210.us-west-2.compute.amazonaws.com | ||||||
| A | 91.195.240.8🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| MX | localhost ⭐ | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.sedoparking.comhostmaster@sedo.de 2018-05-16 #1 | ||||||
courses
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.courses ⭐ | ||||||
| NS | b.nic.courses | ||||||
| NS | c.nic.courses | ||||||
| NS | x.nic.courses | ||||||
| NS | y.nic.courses | ||||||
| NS | z.nic.courses | ||||||
| SOA | a.nic.coursesadmin@tldns.godaddy serial=1780544146 | ||||||
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●NSns1.sedoparking.com2026-03-14 → 2026-06-04 · 2 obs
● 2026-06-04 04:36:54
●NSns2.sedoparking.com2026-03-14 → 2026-06-04 · 2 obs
● 2026-06-04 04:36:54
●MXlocalhost2026-03-14 → 2026-06-04 · 2 obs
● 2026-06-04 04:36:54
○A15.197.240.202026-03-14 → 2026-06-04 · 2 obs
○ 2026-06-04 04:36:54
●A64.190.63.2222026-03-14 → 2026-06-04 · 2 obs
● 2026-06-04 04:36:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | b.nic.courses, x.nic.courses, a.nic.courses, y.nic.courses... | 12 records |
| masterclass.courses | ns2.sedoparking.com, ns1.sedoparking.com | - |
✅ Authoritative Response
Server:34.211.188.210
NS records: ns2.sedoparking.com, ns1.sedoparking.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for masterclass.courses (unsigned zone)
⏱️ Timing
Total: 941ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 64.190.63.222 |
| NS | 2 | ns2.sedoparking.com, ns1.sedoparking.com |
| MX | 1 | localhost (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.sedoparking.com hostmaster.sedo.de |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (z.nic.courses, y.nic.courses, x.nic.courses...)
Analysis
IP Addresses
masterclass.courses has exactly one IP address — 64.190.63.222.
wer-nicht-wirbt-stirbt.de, ethopal.com, chippewaboots.jp plus two other host names have IP numbers in common with masterclass.courses.
Name Servers
Two name servers handle the delegation for masterclass.courses: ns1.sedoparking.com and ns2.sedoparking.com.
The name server configuration of masterclass.courses is shared with other domains, for instance ns2.rubbergorilla.com, kratom.world, erectol.com and two others.
masterclass.courses has a partial name server overlap with other domains — among them komar-kamir.blogspot.com.ua and auto-duosatbladehd.blogspot.com.ua.
ns1.sedoparking.com and ns2.sedoparking.com both carry two IP addresses. The A records for ns1.sedoparking.com are 3.130.216.63 and 91.195.241.8; the A records for ns2.sedoparking.com are 34.211.188.210 and 91.195.240.8.
Mail Servers
masterclass.courses uses one mail server — localhost.
The mail server setup of masterclass.courses matches that of other domains such as ego-shooters.foren-city.de, simelite.be, www.findghar.com and two others.