`connectedmcgrawhill.com`

DNSSEC	⚠️ Not signed
A	204.74.99.100^{🇺🇸 MAINT-ID-12008204.74.99.0/24 Neustar}
		PTR	`crs.ultradns.net`
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`
TXT	`v=spf1 mx -all`
SOA	`pdns85.ultradns.com`hostmaster@mheducation.com 2014-12-09 #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=1777069846

Same first word

connectedmcgrawhill.com

DNS History

7 records (5 active, 2 former)

●NSpdns85.ultradns.biz2015-05-30 → 2026-04-24 · 2 obs

● 2015-05-30 17:14:30
● 2026-04-24 22:56:04

●NSpdns85.ultradns.com2015-05-30 → 2026-04-24 · 2 obs

● 2015-05-30 17:14:30
● 2026-04-24 22:56:04

●NSpdns85.ultradns.net2015-05-30 → 2026-04-24 · 2 obs

● 2015-05-30 17:14:30
● 2026-04-24 22:56:04

●NSpdns85.ultradns.org2015-05-30 → 2026-04-24 · 2 obs

● 2015-05-30 17:14:30
● 2026-04-24 22:56:04

○A192.243.90.1012016-09-23 → 2016-09-23 · 4 obs

○ 2016-04-09 17:41:30
● 2016-09-23 06:34:44
○ 2017-07-01 22:23:06
○ 2026-04-24 22:56:04

○A192.243.92.2482015-05-30 → 2016-04-09 · 4 obs

● 2015-05-30 17:14:30
● 2016-04-09 17:41:30
○ 2016-09-23 06:34:44
○ 2026-04-24 22:56:04

●A204.74.99.1002017-07-01 → 2026-04-24 · 3 obs

○ 2016-09-23 06:34:44
● 2017-07-01 22:23:06
● 2026-04-24 22:56:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
connectedmcgrawhill.com	pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org	2 records

✅ Authoritative Response

Server:156.154.64.85

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for connectedmcgrawhill.com (unsigned zone)

⏱️ Timing

Total: 364ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`204.74.99.100`
NS	4	`pdns85.ultradns.biz, pdns85.ultradns.com...`
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

connectedmcgrawhill.com maps to IP address 204.74.99.100.

Other host names, for instance *.cyberdude.com, realestatevoice.com.au, june.dk, vacatoins.net and marqueelabs.com share IP numbers with connectedmcgrawhill.com.

Name Servers

connectedmcgrawhill.com is delegated to four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.

connectedmcgrawhill.com at least partially shares name servers with other domains such as pictometry.com, mhe.app, engradeok.com, ocsl.com and connectecon.net.

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

connectedmcgrawhill.com - robtex.com