master-course.com - dns.ninja
master-course.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns2.afternic.com ⭐ | ||||||
| A | 2603:5:2226::45🇺🇸 GODADDY-DNS2603:5:2220::/44 | ||||||
| PTR | ns2.afternic.com | ||||||
| A | 173.201.66.69🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns2.afternic.com | ||||||
| NS | ns1.afternic.com | ||||||
| A | 2603:5:2126::45🇺🇸 GODADDY-DNS2603:5:2120::/44 | ||||||
| PTR | ns1.afternic.com | ||||||
| A | 97.74.98.69🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns1.afternic.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns2.afternic.comdns@jomax.net serial=1 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1782104635 | ||||||
Same first word
master-course.com |
Similar names
course-master.net |
source-master.com |
actor-mesures.com |
source-stream.com |
source-master.de |
stream-source.com |
master-source.com |
DNS History
9 records (4 active, 5 former)
○NSdns10.parkpage.foundationapi.com2020-01-27 → 2020-01-27 · 3 obs
○ 2026-02-25 04:09:50
○ 2026-06-22 05:21:22
○NSdns9.parkpage.foundationapi.com2020-01-27 → 2020-01-27 · 3 obs
○ 2026-02-25 04:09:50
○ 2026-06-22 05:21:22
●NSns1.afternic.com2026-02-25 → 2026-06-22 · 3 obs
● 2026-02-25 04:09:50
● 2026-06-22 05:21:22
●NSns2.afternic.com2026-02-25 → 2026-06-22 · 3 obs
● 2026-02-25 04:09:50
● 2026-06-22 05:21:22
○MX.2026-02-25 → 2026-06-22 · 2 obs
○ 2026-06-22 05:21:22
●A13.248.169.482026-02-25 → 2026-06-22 · 3 obs
● 2026-02-25 04:09:50
● 2026-06-22 05:21:22
○A209.99.40.2222020-01-27 → 2020-01-27 · 3 obs
○ 2026-02-25 04:09:50
○ 2026-06-22 05:21:22
●A76.223.54.1462026-02-25 → 2026-06-22 · 3 obs
● 2026-02-25 04:09:50
● 2026-06-22 05:21:22
○PTRdns9.parkpage.foundationapi.com2020-01-27 → 2020-01-27 · 3 obs
○ 2026-02-25 04:09:50
○ 2026-06-22 05:21:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| master-course.com | ns1.afternic.com, ns2.afternic.com | 4 records |
✅ Authoritative Response
Server:173.201.66.69
NS records: ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for master-course.com (unsigned zone)
⏱️ Timing
Total: 420ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.54.146, 13.248.169.48 |
| NS | 2 | ns1.afternic.com, ns2.afternic.com |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns2.afternic.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.afternic.com, ns1.afternic.com, ns2.afternic.com...)
Analysis
IP Addresses
master-course.com has two IP addresses: 13.248.169.48 and 76.223.54.146
fltrusts.org, evolvebodycontouring.com, metalurge.com and two other host names share IP numbers with master-course.com.
Name Servers
master-course.com uses two name servers for its delegation: ns1.afternic.com and ns2.afternic.com.
master-course.com uses the same name servers as several other domains — among them ns1.appalerts.com, bassmobile.com, elegantkey.com and two more.
The name servers of master-course.com overlap at least partially with those of other domains — among them jams.org.uk, oikd.com, findus.net and two more.
These name servers commonly appear in combination with the name servers verification-kychg6v62cjy2sq3kx5ou5.ns101.verify.hn.
The two host names ns1.afternic.com and ns2.afternic.com each have a pair of IP addresses: ns1.afternic.com has 97.74.98.69 and 2603:5:2126::45, and ns2.afternic.com has 173.201.66.69 and 2603:5:2226::45.