gmail.courses - dns.ninja
gmail.courses
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.googledomains.com ⭐ | ||||||
| A | 2001:4860:4802:32::63🇺🇸 Google2001:4860::/32 | ||||||
| PTR | ns1.googledomains.com | ||||||
| A | 216.239.32.99🇺🇸 Google216.239.32.0/24 | ||||||
| PTR | ns1.googledomains.com | ||||||
| NS | ns2.googledomains.com | ||||||
| A | 2001:4860:4802:34::63🇺🇸 Google2001:4860::/32 | ||||||
| PTR | ns2.googledomains.com | ||||||
| A | 216.239.34.99🇺🇸 Google216.239.34.0/24 | ||||||
| PTR | ns2.googledomains.com | ||||||
| NS | ns3.googledomains.com | ||||||
| A | 2001:4860:4802:36::63🇺🇸 Google2001:4860::/32 | ||||||
| PTR | ns3.googledomains.com | ||||||
| A | 216.239.36.99🇺🇸 Google216.239.36.0/24 | ||||||
| PTR | ns3.googledomains.com | ||||||
| NS | ns4.googledomains.com | ||||||
| A | 2001:4860:4802:38::63🇺🇸 Google2001:4860::/32 | ||||||
| PTR | ns4.googledomains.com | ||||||
| A | 216.239.38.99🇺🇸 Google216.239.38.0/24 | ||||||
| PTR | ns4.googledomains.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.googledomains.comcloud-dns-hostmaster@google.com serial=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=1784868810 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns1.googledomains.com2026-04-20 → 2026-07-24 · 2 obs
● 2026-07-24 05:41:20
●NSns2.googledomains.com2026-04-20 → 2026-07-24 · 2 obs
● 2026-07-24 05:41:20
●NSns3.googledomains.com2026-04-20 → 2026-07-24 · 2 obs
● 2026-07-24 05:41:20
●NSns4.googledomains.com2026-04-20 → 2026-07-24 · 2 obs
● 2026-07-24 05:41:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses... | 12 records |
| gmail.courses | ns1.googledomains.com, ns2.googledomains.com, ns3.googledomains.com, ns4.googledomains.com | - |
✅ Authoritative Response
Server:216.239.38.99
NS records: ns1.googledomains.com, ns2.googledomains.com, ns3.googledomains.com, ns4.googledomains.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gmail.courses (unsigned zone)
⏱️ Timing
Total: 398ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns3.googledomains.com, ns4.googledomains.com... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.googledomains.com cloud-dns-hostmast |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, a.nic.courses, b.nic.courses...)
Analysis
Name Servers
Four name servers handle the delegation for gmail.courses: ns1.googledomains.com, ns2.googledomains.com, ns3.googledomains.com and ns4.googledomains.com.
gmail.courses partially shares its NS delegation with several other domains, including get.new, voicegizmo.com, gschema.org and two others.
ns1.googledomains.com, ns2.googledomains.com, ns3.googledomains.com and ns4.googledomains.com each carry two IP addresses. ns1.googledomains.com has 216.239.32.99 and 2001:4860:4802:32::63; ns2.googledomains.com has 216.239.34.99 and 2001:4860:4802:34::63; ns3.googledomains.com has 216.239.36.99 and 2001:4860:4802:36::63; ns4.googledomains.com has 216.239.38.99 and 2001:4860:4802:38::63.