itbsprep.com - dns.ninja

`itbsprep.com`

DNSSEC	⚠️ Not signed
A	159.182.5.50^{🇺🇸 ENETWORKS128.0.0.0/2}
		PTR	`ccclearn.com`
		PTR	`k12catalog.pearson.com`
		PTR	`pelcatalog.pearson.com`
		PTR	`phcatalog.pearson.com`
		PTR	`plgcatalog.pearson.com`
		PTR	`sfcatalog.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	`mail77.pearsontc.net` ⭐
		A	165.193.140.41^{🇺🇸 AS3561165.193.128.0/20}
			PTR	`mail77.pearsontc.net`
SOA	`dns-amer-2.ptns.pearson.com`gns-dnsoperations@pearson.com 2010-12-10 #58

`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=1785262607

WOT: SAFE (100/100)

PTR for

208.29.224.63.in-addr.arpa

Subdomains

www.itbsprep.com

Same first word

itbsprep.com

Similar names

bptspire.com

erbtipps.de

DNS History

13 records (7 active, 6 former)

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

○ 2017-07-10 19:11:58
● 2026-04-04 05:28:38
● 2026-07-28 18:37:00

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

○ 2017-07-10 19:11:58
● 2026-04-04 05:28:38
● 2026-07-28 18:37:00

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

○ 2017-07-10 19:11:58
● 2026-04-04 05:28:38
● 2026-07-28 18:37:00

○NSns01.pearson.com2015-05-17 → 2017-07-10 · 4 obs

● 2015-05-17 07:37:22
● 2017-07-10 19:11:58
○ 2026-04-04 05:28:38
○ 2026-07-28 18:37:00

○NSns02.pearson.com2015-05-17 → 2017-07-10 · 4 obs

● 2015-05-17 07:37:22
● 2017-07-10 19:11:58
○ 2026-04-04 05:28:38
○ 2026-07-28 18:37:00

○NSns03.pearson.com2015-05-17 → 2017-07-10 · 4 obs

● 2015-05-17 07:37:22
● 2017-07-10 19:11:58
○ 2026-04-04 05:28:38
○ 2026-07-28 18:37:00

○NSns04.pearson.com2015-05-17 → 2017-07-10 · 4 obs

● 2015-05-17 07:37:22
● 2017-07-10 19:11:58
○ 2026-04-04 05:28:38
○ 2026-07-28 18:37:00

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

○ 2017-07-10 19:11:58
● 2026-04-04 05:28:38
● 2026-07-28 18:37:00

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

○ 2017-07-10 19:11:58
● 2026-04-04 05:28:38
● 2026-07-28 18:37:00

●MXmail77.pearsontc.net2015-05-17 → 2026-07-28 · 2 obs

● 2015-05-17 07:37:22
● 2026-07-28 18:37:00

○A159.182.16.1172015-05-17 → 2016-04-20 · 4 obs

● 2015-05-17 07:37:22
● 2016-04-20 12:35:50
○ 2016-11-28 21:04:32
○ 2026-07-28 18:37:00

●A159.182.5.502026-04-04 → 2026-07-28 · 3 obs

○ 2017-07-10 19:11:58
● 2026-04-04 05:28:38
● 2026-07-28 18:37:00

○A159.182.95.2332016-11-28 → 2017-07-10 · 5 obs

○ 2016-04-20 12:35:50
● 2016-11-28 21:04:32
● 2017-07-10 19:11:58
○ 2026-04-04 05:28:38
○ 2026-07-28 18:37:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, g.gtld-servers.net, c.gtld-servers.net, a.gtld-servers.net...	-
itbsprep.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 itbsprep.com (unsigned zone)

⏱️ Timing

Total: 693ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`159.182.5.50`
NS	3	`dns-apac-1.ptns.pearson.com, dns-emea-1.ptns.pearson.com...`
MX	1	`mail77.pearsontc.net (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

itbsprep.com serves as the parent of www.itbsprep.com.

IP Addresses

itbsprep.com has exactly one IP address — 159.182.5.50.

pearsonfundingresources.com, plgcatalog.pearson.com, privateschoolpearson.com plus two other host names have IP numbers in common with itbsprep.com.

Name Servers

Five name servers handle delegation for itbsprep.com: ns1.pearson.com, ns2.pearson.com, dns-amer-2.ptns.pearson.com and two others.

itbsprep.com has at least partial name server overlap with other domains, such as berufsstrategie-exakt.de, myenvironmentalscience.com, nndf.org.uk 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 points to 168.146.112.10.

ns2.pearson.com points to 168.146.112.11.

dns-amer-2.ptns.pearson.com points to 159.182.12.40.

dns-apac-1.ptns.pearson.com points to 159.182.67.40.

dns-emea-1.ptns.pearson.com points to 159.182.79.40.

Mail Servers

itbsprep.com uses one mail server — mail77.pearsontc.net.

The mail server setup of itbsprep.com matches that of other domains such as pearsonschoolsystems.com, pearsontc.net, fcatprep.com and two others.

mail77.pearsontc.net resolves to a single IP number: 165.193.140.41.