`cpsmcgrawhillrti.com`

DNSSEC	⚠️ Not signed
A	50.19.230.255^{🇺🇸 Amazon50.19.128.0/17 EC2 IAD prefix}
		PTR	`ec2-50-19-230-255.compute-1.amazonaws.com`
NS	`pdns85.ultradns.com` ⭐
		A	2001:502:f3ff::79^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns85.ultradns.com`
		A	156.154.64.85^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns85.ultradns.com`
NS	`pdns85.ultradns.biz`
		A	2610:a1:1015::79^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns85.ultradns.biz`
		A	156.154.66.85^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns85.ultradns.biz`
NS	`pdns85.ultradns.net`
		A	2610:a1:1014::79^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns85.ultradns.net`
		A	156.154.65.85^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns85.ultradns.net`
NS	`pdns85.ultradns.org`
		A	2001:502:4612::79^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns85.ultradns.org`
		A	156.154.67.85^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns85.ultradns.org`
MX	`mail.eppg.com` ⭐
TXT	`v=spf1 mx -all`
SOA	`pdns85.ultradns.com`hostmaster@mheducation.com 2012-12-13 #19

`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=1777077231

Same first word

cpsmcgrawhillrti.com

DNS History

6 records (6 active, 0 former)

●NSpdns85.ultradns.biz2015-05-24 → 2026-04-25 · 2 obs

● 2015-05-24 15:53:20
● 2026-04-25 00:55:10

●NSpdns85.ultradns.com2015-05-24 → 2026-04-25 · 2 obs

● 2015-05-24 15:53:20
● 2026-04-25 00:55:10

●NSpdns85.ultradns.net2015-05-24 → 2026-04-25 · 2 obs

● 2015-05-24 15:53:20
● 2026-04-25 00:55:10

●NSpdns85.ultradns.org2015-05-24 → 2026-04-25 · 2 obs

● 2015-05-24 15:53:20
● 2026-04-25 00:55:10

●MXmail.eppg.com2015-05-24 → 2026-04-25 · 2 obs

● 2015-05-24 15:53:20
● 2026-04-25 00:55:10

●A50.19.230.2552015-05-24 → 2026-04-25 · 2 obs

● 2015-05-24 15:53:20
● 2026-04-25 00:55:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
cpsmcgrawhillrti.com	pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org	2 records

✅ Authoritative Response

Server:156.154.65.85

NS records: pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cpsmcgrawhillrti.com (unsigned zone)

⏱️ Timing

Total: 488ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`50.19.230.255`
NS	4	`pdns85.ultradns.biz, pdns85.ultradns.com...`
MX	1	`mail.eppg.com (pri: 5)`
TXT	1	`v=spf1 mx -all`
SOA	1	`pdns85.ultradns.com hostmaster.mheducati`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns85.ultradns.com, pdns85.ultradns.com)

Analysis

IP Addresses

cpsmcgrawhillrti.com resolves to one IP number: 50.19.230.255.

Other host names, for instance sra4kids.com, srailab.com, philasddirectinstruction.com, chicagomcgrawhillrti.com and www.sra4kids.com share IP numbers with cpsmcgrawhillrti.com.

Name Servers

cpsmcgrawhillrti.com delegates to four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.

cpsmcgrawhillrti.com at least partially shares name servers with other domains, including huntmellodeitz.com, iteach-physics.com, engradeak.com, mhcampus.com and connecthrm.ca.

Host names with two IP numbers: pdns85.ultradns.biz points to 2610:a1:1015::79 and 156.154.66.85; pdns85.ultradns.com points to 2001:502:f3ff::79 and 156.154.64.85; pdns85.ultradns.net points to 2610:a1:1014::79 and 156.154.65.85; pdns85.ultradns.org points to 2001:502:4612::79 and 156.154.67.85.

Mail Servers

A single mail server handles cpsmcgrawhillrti.com, mail.eppg.com.

cpsmcgrawhillrti.com shares the same mail server setup as other domains, for instance jrnstudents.com, gr3math.com, mcgrawhillcreate.com, bcscience10.com and mheducationindia.com.

cpsmcgrawhillrti.com shares at least some mail servers with other domains, for example mcgraw-hill.com.au, mhecdi.com, symptomtodiagnosis.com, perfectphrasesformanagers.com and kaleidoscopeintervention.com.

cpsmcgrawhillrti.com - robtex.com