pearsonmastering.com - dns.ninja

`pearsonmastering.com`

DNSSEC	⚠️ Not signed
A	159.182.72.19^{🇺🇸 PEARSON-EMEA159.182.72.0/21 NCS Pearson Inc.}
		PTR	`pearsontestprep.com`
		PTR	`lo1.redirect.global.pearson.com`
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` ⭐
SOA	`dns-amer-2.ptns.pearson.com`gns-dnsoperations@pearson.com 2013-08-17 #63

`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=1785255167

Subdomains

www.pearsonmastering.com

Same first word

pearsonmastering.com

Similar names

sigmaonepartners.sbs

DNS History

18 records (7 active, 11 former)

●NSdns-amer-2.ptns.pearson.com2026-03-04 → 2026-07-28 · 3 obs

○ 2017-04-24 12:02:34
● 2026-03-04 16:52:28
● 2026-07-28 16:38:08

●NSdns-apac-1.ptns.pearson.com2026-03-04 → 2026-07-28 · 3 obs

○ 2017-04-24 12:02:34
● 2026-03-04 16:52:28
● 2026-07-28 16:38:08

●NSdns-emea-1.ptns.pearson.com2026-03-04 → 2026-07-28 · 3 obs

○ 2017-04-24 12:02:34
● 2026-03-04 16:52:28
● 2026-07-28 16:38:08

○NSicdns0.ic.ncs.com2015-05-15 → 2015-05-15 · 3 obs

● 2015-05-15 23:29:00
○ 2015-10-19 12:07:28
○ 2026-07-28 16:38:08

○NSicdns3.ic.ncs.com2015-05-15 → 2015-05-15 · 3 obs

● 2015-05-15 23:29:00
○ 2015-10-19 12:07:28
○ 2026-07-28 16:38:08

○NSicdns4.ic.ncs.com2015-05-15 → 2015-05-15 · 3 obs

● 2015-05-15 23:29:00
○ 2015-10-19 12:07:28
○ 2026-07-28 16:38:08

○NSns01.pearson.com2015-05-15 → 2017-04-24 · 4 obs

● 2015-05-15 23:29:00
● 2017-04-24 12:02:34
○ 2026-03-04 16:52:28
○ 2026-07-28 16:38:08

○NSns02.pearson.com2015-05-15 → 2017-04-24 · 4 obs

● 2015-05-15 23:29:00
● 2017-04-24 12:02:34
○ 2026-03-04 16:52:28
○ 2026-07-28 16:38:08

○NSns03.pearson.com2015-05-15 → 2017-04-24 · 4 obs

● 2015-05-15 23:29:00
● 2017-04-24 12:02:34
○ 2026-03-04 16:52:28
○ 2026-07-28 16:38:08

○NSns04.pearson.com2015-05-15 → 2017-04-24 · 4 obs

● 2015-05-15 23:29:00
● 2017-04-24 12:02:34
○ 2026-03-04 16:52:28
○ 2026-07-28 16:38:08

●NSns1.pearson.com2026-03-04 → 2026-07-28 · 3 obs

○ 2017-04-24 12:02:34
● 2026-03-04 16:52:28
● 2026-07-28 16:38:08

●NSns2.pearson.com2026-03-04 → 2026-07-28 · 3 obs

○ 2017-04-24 12:02:34
● 2026-03-04 16:52:28
● 2026-07-28 16:38:08

○NSoldtxdns2.pearsontc.com2015-05-15 → 2015-05-15 · 3 obs

● 2015-05-15 23:29:00
○ 2015-10-19 12:07:28
○ 2026-07-28 16:38:08

○NSusrxdns1.pearsontc.com2015-05-15 → 2015-05-15 · 3 obs

● 2015-05-15 23:29:00
○ 2015-10-19 12:07:28
○ 2026-07-28 16:38:08

●MXmail03.pearsoncmg.com2015-05-15 → 2026-07-28 · 2 obs

● 2015-05-15 23:29:00
● 2026-07-28 16:38:08

●A159.182.72.192026-06-23 → 2026-07-28 · 3 obs

○ 2026-06-16 03:46:52
● 2026-06-23 14:29:54
● 2026-07-28 16:38:08

○A168.146.68.322026-03-04 → 2026-06-16 · 5 obs

○ 2017-04-24 12:02:34
● 2026-03-04 16:52:28
● 2026-06-16 03:46:52
○ 2026-06-23 14:29:54
○ 2026-07-28 16:38:08

○A206.31.248.1552015-05-15 → 2017-04-24 · 4 obs

● 2015-05-15 23:29:00
● 2017-04-24 12:02:34
○ 2026-03-04 16:52:28
○ 2026-07-28 16:38:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
pearsonmastering.com	ns2.pearson.com, ns1.pearson.com	2 records

✅ Authoritative Response

Server:168.146.112.11

NS records: ns2.pearson.com, ns1.pearson.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pearsonmastering.com (unsigned zone)

⏱️ Timing

Total: 235ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`159.182.72.19`
NS	3	`dns-amer-2.ptns.pearson.com, dns-emea-1.ptns.pearson.com...`
MX	1	`mail03.pearsoncmg.com (pri: 10)`
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

pearsonmastering.com is the parent zone for www.pearsonmastering.com.

IP Addresses

pearsonmastering.com directs to one IP number, which is 159.182.72.19.

Among the host names that share IP numbers with pearsonmastering.com are skill.com.br, pearsonsuccess.com, pearsonassessments.org and two others.

Name Servers

The authoritative name servers for pearsonmastering.com are ns1.pearson.com, ns2.pearson.com, dns-amer-2.ptns.pearson.com and two others.

pearsonmastering.com partially shares its NS delegation with several other domains, including swhealthedonline.com, gedonlinediploma.info, pearsonlongman.si 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.

Hosts that resolve to one IP address:

ns1.pearson.com points to the IP address 168.146.112.10.

ns2.pearson.com points to the IP address 168.146.112.11.

dns-amer-2.ptns.pearson.com points to the IP address 159.182.12.40.

dns-apac-1.ptns.pearson.com points to the IP address 159.182.67.40.

dns-emea-1.ptns.pearson.com points to the IP address 159.182.79.40.

Mail Servers

pearsonmastering.com routes its mail through a single mail server, mail03.pearsoncmg.com.

pearsonmastering.com has the same mail server arrangement as a number of other domains, for example mypearsonlabs.com, interactivephysiology.com, clardev2.pearsoncmg.com and two more.

pearsonmastering.com shares at least some of its mail servers with other domains — for example masteringchemistry.com, masteringaandp.com, ppe.pearsoncmg.com and two more.

It is common to find these mail servers paired with the mail servers mail02.pearsoncmg.com.