course-learning.com - dns.ninja
course-learning.com
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=1786823139 | ||||||
MX for
course-learning.com |
Subdomains
www.course-learning.com |
Same first word
course-learning.com |
DNS History
11 records (11 active, 0 former)
●NSns-cloud-a1.googledomains.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●NSns-cloud-a2.googledomains.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●NSns-cloud-a3.googledomains.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●NSns-cloud-a4.googledomains.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●MXalt1.aspmx.l.google.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●MXalt2.aspmx.l.google.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●MXalt3.aspmx.l.google.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●MXalt4.aspmx.l.google.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●MXaspmx.l.google.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●MXcourse-learning.com2026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
●A18.117.168.932026-02-20 → 2026-08-15 · 2 obs
● 2026-08-15 20:04:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net... | - |
| course-learning.com | ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com | 8 records |
✅ Authoritative Response
Server:216.239.38.106
NS records: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 500ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 18.117.168.93 |
| NS | 4 | ns-cloud-a4.googledomains.com, ns-cloud-a2.googledomains.com... |
| MX | 6 | alt2.aspmx.l.google.com (pri: 5), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 1 | v=spf1 mx:course-learning.com ip4:18.117 |
| SOA | 1 | ns-cloud-a1.googledomains.com cloud-dns- |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns-cloud-a1.googledomains.com, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com...)
Analysis
Hierarchy
course-learning.com is the parent zone for www.course-learning.com.
Mail Server Role
course-learning.com acts as its own mail server.
The mail servers aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com are commonly grouped with course-learning.com.
IP Addresses
course-learning.com points to a single IP number: 18.117.168.93.
www.course-learning.com and ec2-18-117-168-93.us-east-2.compute.amazonaws.com, along with other host names, share IP addresses with course-learning.com.
Name Servers
course-learning.com has four authoritative name servers: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com and ns-cloud-a4.googledomains.com.
course-learning.com partially shares its NS delegation with several other domains, including crrv.org, wiseadvisoryllc.com, rapicomm.com 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
course-learning.com has 6 mail servers — course-learning.com, aspmx.l.google.com, alt1.aspmx.l.google.com and 3 others.
course-learning.com shares mail servers — at least in part — with other domains, including ns500742.ns500731.ns500671.ns500731.ns500731.ns500671.ns500731.ns500705.tenderladiesbz.com, ns500698.ns500758.ns500758.ns500759.ns500698.ns500735.ns500736.ns500698.ns500735.ns500698.ns500708.ns500708.ns500686.ns500619.ns500576.trackreceptor.com, ns500671.ns500742.ns500754.ns500671.ns500671.ns500688.ns500671.ns500678.ns500705.ns500671.ns500649.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com and two others.
These mail servers are frequently used alongside mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other.
Host names with two IP numbers:
aspmx.l.google.com resolves to 142.251.163.26 and 2607:f8b0:4004:c23::1b.
alt1.aspmx.l.google.com resolves to 192.178.234.26 and 2800:3f0:4003:c14::1b.
alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1a.
alt4.aspmx.l.google.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1a.
Host names pointing to a single IP address:
course-learning.com resolves to 18.117.168.93.