masteringengineering.com - dns.ninja
masteringengineering.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=1785231337 | ||||||
Subdomains
Same first word
masteringengineering.com |
DNS History
18 records (10 active, 8 former)
●NSdns-amer-2.ptns.pearson.com2026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
●NSdns-apac-1.ptns.pearson.com2026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
●NSdns-emea-1.ptns.pearson.com2026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
○NSns01.pearson.com2015-08-09 → 2017-09-23 · 3 obs
● 2017-09-23 19:42:04
○ 2026-07-28 09:54:54
○NSns02.pearson.com2015-08-09 → 2017-09-23 · 3 obs
● 2017-09-23 19:42:04
○ 2026-07-28 09:54:54
○NSns03.pearson.com2015-08-09 → 2017-09-23 · 3 obs
● 2017-09-23 19:42:04
○ 2026-07-28 09:54:54
○NSns04.pearson.com2015-08-09 → 2017-09-23 · 3 obs
● 2017-09-23 19:42:04
○ 2026-07-28 09:54:54
●NSns1.pearson.com2026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
●NSns2.pearson.com2026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
●MXmail02.pearsoncmg.com2015-08-09 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
●MXmail03.pearsoncmg.com2015-08-09 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
●A18.234.12.552026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
○A206.31.248.442015-08-09 → 2017-09-23 · 3 obs
● 2017-09-23 19:42:04
○ 2026-07-28 09:54:54
○A3.219.117.1592026-07-28 → 2026-07-28 · 1 obs
○A52.71.117.2012026-07-28 → 2026-07-28 · 1 obs
●A54.164.224.1802026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
●A54.221.147.1012026-07-28 → 2026-07-28 · 2 obs
● 2026-07-28 09:54:54
○A54.83.156.1602026-07-28 → 2026-07-28 · 1 obs
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| masteringengineering.com | ns2.pearson.com, ns1.pearson.com | 2 records |
✅ Authoritative Response
Server:168.146.112.10
NS records: ns2.pearson.com, ns1.pearson.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for masteringengineering.com (unsigned zone)
⏱️ Timing
Total: 126ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 54.164.224.180, 18.234.12.55... |
| NS | 3 | dns-emea-1.ptns.pearson.com, dns-apac-1.ptns.pearson.com... |
| MX | 2 | mail02.pearsoncmg.com (pri: 10), mail03.pearsoncmg.com (pri: 5) |
| SOA | 1 | dns-amer-2.ptns.pearson.com gns-dnsopera |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.pearson.com, ns1.pearson.com)
Analysis
Hierarchy
masteringengineering.com serves as the parent of session.masteringengineering.com and www.masteringengineering.com.
IP Addresses
masteringengineering.com maps to three IP numbers — 18.234.12.55, 54.164.224.180 and 54.221.147.101.
Name Servers
Five name servers handle delegation for masteringengineering.com: ns1.pearson.com, ns2.pearson.com, dns-amer-2.ptns.pearson.com and two others.
masteringengineering.com has at least partial name server overlap with other domains, such as military2university.com, pearsonsssess.com, pearsonbugclub.com and two others.
It is common to see these name servers used together with name servers dns-apac-1.ptns.pearson.com and dns-emea-1.ptns.pearson.com.
Host names resolving to a single IP address:
ns1.pearson.com resolves to 168.146.112.10.
ns2.pearson.com resolves to 168.146.112.11.
dns-amer-2.ptns.pearson.com resolves to 159.182.12.40.
dns-apac-1.ptns.pearson.com resolves to 159.182.67.40.
dns-emea-1.ptns.pearson.com resolves to 159.182.79.40.
Mail Servers
masteringengineering.com uses two mail servers, mail02.pearsoncmg.com and mail03.pearsoncmg.com.
The mail server setup of masteringengineering.com matches that of other domains such as masteringaandp.com, ppe.pearsoncmg.com, masteringphysics.com and two others.
At least some of the mail servers used by masteringengineering.com are shared with other domains: clardev2.pearsoncmg.com, pearsonmylabandmastering.com, wps.pearsoncmg.com and two others among them.