`securityanalysisbook.com`

DNSSEC	⚠️ Not signed
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 2014-12-04 #21

`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=1777064326

Same first word

securityanalysisbook.com

DNS History

7 records (5 active, 2 former)

●NSpdns85.ultradns.biz2015-08-07 → 2026-04-24 · 2 obs

● 2015-08-07 12:28:48
● 2026-04-24 21:19:46

●NSpdns85.ultradns.com2015-08-07 → 2026-04-24 · 2 obs

● 2015-08-07 12:28:48
● 2026-04-24 21:19:46

●NSpdns85.ultradns.net2015-08-07 → 2026-04-24 · 2 obs

● 2015-08-07 12:28:48
● 2026-04-24 21:19:46

●NSpdns85.ultradns.org2015-08-07 → 2026-04-24 · 2 obs

● 2015-08-07 12:28:48
● 2026-04-24 21:19:46

●MXmail.eppg.com2015-08-07 → 2026-04-24 · 2 obs

● 2015-08-07 12:28:48
● 2026-04-24 21:19:46

○A192.243.83.1772015-08-07 → 2016-06-20 · 4 obs

● 2015-08-07 12:28:48
● 2016-06-20 18:56:08
○ 2017-01-25 14:14:22
○ 2026-04-24 21:19:46

○A192.243.92.1922017-01-25 → 2019-01-21 · 5 obs

○ 2016-06-20 18:56:08
● 2017-01-25 14:14:22
● 2019-01-21 03:40:36
○ 2026-04-22 16:41:10
○ 2026-04-24 21:19:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net...	-
securityanalysisbook.com	pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org	2 records

✅ Authoritative Response

Server:156.154.67.85

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for securityanalysisbook.com (unsigned zone)

⏱️ Timing

Total: 664ms | Queries: -

📄 Records

Type	Count	Sample Data
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

Name Servers

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

securityanalysisbook.com at least partially shares name servers with other domains, for instance acuityupload.com, scienceontario.ca, myguidecalifornia.com, pharmacotherapyessentials.com and istudysocialpsychology.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

securityanalysisbook.com is handled by a single mail server, mail.eppg.com.

securityanalysisbook.com uses the same mail server configuration as other domains, such as gr1math.com, mcgrawhillconnect.com, realmath.com, chisholmpharmacotherapy.com and pagebeta.net.

securityanalysisbook.com shares mail servers with other domains at least in part, for instance mcgraw-hill.com.au, wgdlm.com, successingenetics.com, mhhebookstore.com and mcgraw-hill.com.mx.

securityanalysisbook.com - robtex.com