qb.courses - robtex.com
qb.courses
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=1778344576 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.markmonitor.com2026-04-27 → 2026-05-09 · 2 obs
● 2026-05-09 18:47:28
●NSns2.markmonitor.com2026-04-27 → 2026-05-09 · 2 obs
● 2026-05-09 18:47:28
●NSns3.markmonitor.com2026-04-27 → 2026-05-09 · 2 obs
● 2026-05-09 18:47:28
●NSns4.markmonitor.com2026-04-27 → 2026-05-09 · 2 obs
● 2026-05-09 18:47:28
●A99.83.176.462026-04-27 → 2026-05-09 · 2 obs
● 2026-05-09 18:47:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses... | 12 records |
| qb.courses | ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com | - |
✅ Authoritative Response
Server:192.174.68.1
NS records: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for qb.courses (unsigned zone)
⏱️ Timing
Total: 623ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 99.83.176.46 |
| NS | 4 | ns1.markmonitor.com, ns2.markmonitor.com... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.markmonitor.com hostmaster.markmonit |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)
Analysis
IP Addresses
qb.courses points to a single IP number: 99.83.176.46.
Other host names, for instance paypaldealfinder.com, pc-welthit.de, mtvhd.org, prismicre.com and funl.com share IP numbers with qb.courses.
Name Servers
qb.courses is delegated to four name servers: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and ns4.markmonitor.com.
qb.courses shares name servers with other domains at least partially, for instance anaplan.dk, auslandsfamulatur.com, axa.help, hubmonitor.com and metlifeleads.com.
these name servers are often used with ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.
Host names with two IP numbers:
ns1.markmonitor.com resolves to 2620:10a:80a8::1 and 149.112.160.1.
ns2.markmonitor.com resolves to 2001:67c:10b8::1 and 176.97.158.1.
ns3.markmonitor.com resolves to 2620:10a:80a9::1 and 149.112.161.1.
ns4.markmonitor.com resolves to 2001:67c:1bc::1 and 192.174.68.1.