masteringhelp.com - dns.ninja

`masteringhelp.com`

DNSSEC	⚠️ Not signed
NS	`dns-amer-2.ptns.pearson.com` ⭐ ⚠️ Not in parent delegation
		A	159.182.12.40^{🇺🇸 PEARSON-NA159.182.12.0/24 NCS Pearson Inc.}
			PTR	`dns-amer-2.ptns.pearson.com`
NS	`dns-apac-1.ptns.pearson.com` ⚠️ Not in parent delegation
		A	159.182.67.40^{🇺🇸 PEARSON-APAC159.182.67.0/24 Pearson Group}
			PTR	`dns-apac-1.ptns.pearson.com`
NS	`dns-emea-1.ptns.pearson.com` ⚠️ Not in parent delegation
		A	159.182.79.40^{🇺🇸 PEARSON-EMEA159.182.79.0/24 Pearson Group}
			PTR	`dns-emea-1.ptns.pearson.com`
NS	`ns1.pearson.com` ⚠️ Not in zone NS records
		A	168.146.112.10^{🇺🇸 PEARSON-NA168.146.112.0/24 NCS Pearson Inc.}
			PTR	`ns1.pearson.com`
NS	`ns2.pearson.com` ⚠️ Not in zone NS records
		A	168.146.112.11^{🇺🇸 PEARSON-NA168.146.112.0/24 NCS Pearson Inc.}
			PTR	`ns2.pearson.com`
MX	`mail03.pearsoncmg.com` ⭐
MX	`mail02.pearsoncmg.com`⁽²⁰⁾
SOA	`dns-amer-2.ptns.pearson.com`gns-dnsoperations@pearson.com 2005-07-11 #47

`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.net`nstld@verisign-grs.com serial=1785129147

Same first word

masteringhelp.com

DNS History

12 records (7 active, 5 former)

●NSdns-amer-2.ptns.pearson.com2026-04-21 → 2026-07-27 · 3 obs

○ 2018-06-27 05:29:24
● 2026-04-21 21:26:52
● 2026-07-27 05:28:02

●NSdns-apac-1.ptns.pearson.com2026-04-21 → 2026-07-27 · 3 obs

○ 2018-06-27 05:29:24
● 2026-04-21 21:26:52
● 2026-07-27 05:28:02

●NSdns-emea-1.ptns.pearson.com2026-04-21 → 2026-07-27 · 3 obs

○ 2018-06-27 05:29:24
● 2026-04-21 21:26:52
● 2026-07-27 05:28:02

○NSns01.pearson.com2015-05-24 → 2018-06-27 · 4 obs

● 2015-05-24 15:13:54
● 2018-06-27 05:29:24
○ 2026-04-21 21:26:52
○ 2026-07-27 05:28:02

○NSns02.pearson.com2015-05-24 → 2018-06-27 · 4 obs

● 2015-05-24 15:13:54
● 2018-06-27 05:29:24
○ 2026-04-21 21:26:52
○ 2026-07-27 05:28:02

○NSns03.pearson.com2015-05-24 → 2018-06-27 · 4 obs

● 2015-05-24 15:13:54
● 2018-06-27 05:29:24
○ 2026-04-21 21:26:52
○ 2026-07-27 05:28:02

○NSns04.pearson.com2015-05-24 → 2018-06-27 · 4 obs

● 2015-05-24 15:13:54
● 2018-06-27 05:29:24
○ 2026-04-21 21:26:52
○ 2026-07-27 05:28:02

●NSns1.pearson.com2026-04-21 → 2026-07-27 · 3 obs

○ 2018-06-27 05:29:24
● 2026-04-21 21:26:52
● 2026-07-27 05:28:02

●NSns2.pearson.com2026-04-21 → 2026-07-27 · 3 obs

○ 2018-06-27 05:29:24
● 2026-04-21 21:26:52
● 2026-07-27 05:28:02

●MXmail02.pearsoncmg.com2015-05-24 → 2026-07-27 · 2 obs

● 2015-05-24 15:13:54
● 2026-07-27 05:28:02

●MXmail03.pearsoncmg.com2015-05-24 → 2026-07-27 · 2 obs

● 2015-05-24 15:13:54
● 2026-07-27 05:28:02

○A206.31.248.1682015-05-24 → 2018-06-27 · 4 obs

● 2015-05-24 15:13:54
● 2018-06-27 05:29:24
○ 2026-04-21 21:26:52
○ 2026-07-27 05:28:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
masteringhelp.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 masteringhelp.com (unsigned zone)

⏱️ Timing

Total: 206ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	3	`dns-emea-1.ptns.pearson.com, dns-amer-2.ptns.pearson.com...`
MX	2	`mail03.pearsoncmg.com (pri: 10), mail02.pearsoncmg.com (pri: 20)`
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

Name Servers

masteringhelp.com delegates to five name servers: ns1.pearson.com, ns2.pearson.com, dns-amer-2.ptns.pearson.com and two others.

masteringhelp.com partially shares its NS delegation with several other domains, including pearsonclinical.ca, tnesl.com, groupmath.com and two others.

These name servers are regularly seen alongside dns-apac-1.ptns.pearson.com and dns-emea-1.ptns.pearson.com as name servers.

Host names that point to one 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

masteringhelp.com is served by two mail servers, mail02.pearsoncmg.com and mail03.pearsoncmg.com.

Among the domains sharing a mail server setup with masteringhelp.com are masteringenvironmentalscience.com, ablongmancustom.com, myenglishlab.com and two others.

There is at least a partial MX overlap between masteringhelp.com and other domains, including pearsonmylab.com, pearsonmastering.com, coursecompass.com and two others.