coursesource.com - dns.ninja
coursesource.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=1783470191 | ||||||
Previously MX for
coursesource.com |
Same first word
coursesource.com |
coursesource.net |
coursesource.org |
Similar names
DNS History
12 records (6 active, 6 former)
○NSns1.siteocity.com2015-07-20 → 2019-03-06 · 4 obs
● 2019-03-06 00:36:12
○ 2026-03-26 19:48:00
○ 2026-07-08 00:36:22
●NSns15.domaincontrol.com2026-03-26 → 2026-07-08 · 3 obs
● 2026-03-26 19:48:00
● 2026-07-08 00:36:22
●NSns16.domaincontrol.com2026-03-26 → 2026-07-08 · 3 obs
● 2026-03-26 19:48:00
● 2026-07-08 00:36:22
○NSns2.siteocity.com2015-07-20 → 2019-03-06 · 4 obs
● 2019-03-06 00:36:12
○ 2026-03-26 19:48:00
○ 2026-07-08 00:36:22
○NSns3.siteocity.com2015-07-20 → 2019-03-06 · 4 obs
● 2019-03-06 00:36:12
○ 2026-03-26 19:48:00
○ 2026-07-08 00:36:22
○NSns4.siteocity.com2015-07-20 → 2019-03-06 · 4 obs
● 2019-03-06 00:36:12
○ 2026-03-26 19:48:00
○ 2026-07-08 00:36:22
○MXcoursesource.com2015-07-20 → 2019-03-06 · 4 obs
● 2019-03-06 00:36:12
○ 2026-03-26 19:48:00
○ 2026-07-08 00:36:22
●MXmx0.123-reg.co.uk2026-03-26 → 2026-07-08 · 3 obs
● 2026-03-26 19:48:00
● 2026-07-08 00:36:22
●MXmx1.123-reg.co.uk2026-03-26 → 2026-07-08 · 3 obs
● 2026-03-26 19:48:00
● 2026-07-08 00:36:22
●A15.197.225.1282026-03-26 → 2026-07-08 · 3 obs
● 2026-03-26 19:48:00
● 2026-07-08 00:36:22
○A208.74.126.102015-07-20 → 2019-03-06 · 4 obs
● 2019-03-06 00:36:12
○ 2026-03-26 19:48:00
○ 2026-07-08 00:36:22
●A3.33.251.1682026-03-26 → 2026-07-08 · 3 obs
● 2026-03-26 19:48:00
● 2026-07-08 00:36:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| coursesource.com | ns15.domaincontrol.com, ns16.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.75.8
NS records: ns15.domaincontrol.com, ns16.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursesource.com (unsigned zone)
⏱️ Timing
Total: 1151ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 15.197.225.128, 3.33.251.168 |
| NS | 2 | ns15.domaincontrol.com, ns16.domaincontrol.com |
| MX | 2 | mx1.123-reg.co.uk (pri: 20), mx0.123-reg.co.uk (pri: 10) |
| SOA | 1 | ns15.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns15.domaincontrol.com, ns15.domaincontrol.com, ns16.domaincontrol.com...)
Analysis
IP Addresses
coursesource.com points to the IP addresses 3.33.251.168 and 15.197.225.128
Additional host names — onuosa.com, dohney.com, octanesledwrap.com and two others — share IP numbers with coursesource.com.
Name Servers
coursesource.com is delegated to two name servers: ns15.domaincontrol.com and ns16.domaincontrol.com.
coursesource.com shares its name server setup with other domains, including tomcates.tv, csu-eastbay.us, brogo.ca and two others.
The name servers for coursesource.com overlap at least in part with those of other domains, including thangam.co.in and brandsolutions.co.in.
ns15.domaincontrol.com and ns16.domaincontrol.com each resolve to two IP addresses: ns15.domaincontrol.com points to 97.74.107.8 and 2603:5:21b0::8, while ns16.domaincontrol.com points to 173.201.75.8 and 2603:5:22b0::8.
Mail Servers
coursesource.com has two mail servers: mx0.123-reg.co.uk and mx1.123-reg.co.uk.
coursesource.com shares the same mail server setup as other domains, including dope-monkey.com, morepeoplemoreactive.co.uk, supapass.net and two others.
coursesource.com shares mail servers — at least in part — with other domains, including thecolourhouse.net, fest-mag.com, bristol-sport.co.uk and two others.
Both mx0.123-reg.co.uk and mx1.123-reg.co.uk have a single IP address each — mx0.123-reg.co.uk resolves to 92.204.80.20 while mx1.123-reg.co.uk resolves to 92.204.80.19.