`improvemarks.com`

DNSSEC	⚠️ Not signed
A	192.243.85.36^{🇺🇸 F5192.243.85.0/24 hosted}
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 2014-06-30 #17

`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=1777110316

Same first word

improvemarks.com

DNS History

8 records (6 active, 2 former)

●NSpdns85.ultradns.biz2015-06-18 → 2026-04-25 · 2 obs

● 2015-06-18 09:00:26
● 2026-04-25 10:03:16

●NSpdns85.ultradns.com2015-06-18 → 2026-04-25 · 2 obs

● 2015-06-18 09:00:26
● 2026-04-25 10:03:16

●NSpdns85.ultradns.net2015-06-18 → 2026-04-25 · 2 obs

● 2015-06-18 09:00:26
● 2026-04-25 10:03:16

●NSpdns85.ultradns.org2015-06-18 → 2026-04-25 · 2 obs

● 2015-06-18 09:00:26
● 2026-04-25 10:03:16

●MXmail.eppg.com2015-06-18 → 2026-04-25 · 2 obs

● 2015-06-18 09:00:26
● 2026-04-25 10:03:16

○A192.243.83.302015-06-18 → 2017-05-23 · 4 obs

● 2015-06-18 09:00:26
● 2017-05-23 01:59:32
○ 2026-04-24 23:16:36
○ 2026-04-25 10:03:16

●A192.243.85.362026-04-24 → 2026-04-25 · 3 obs

○ 2017-05-23 01:59:32
● 2026-04-24 23:16:36
● 2026-04-25 10:03:16

○A192.243.93.452015-06-18 → 2017-05-23 · 4 obs

● 2015-06-18 09:00:26
● 2017-05-23 01:59:32
○ 2026-04-24 23:16:36
○ 2026-04-25 10:03:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net...	-
improvemarks.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 improvemarks.com (unsigned zone)

⏱️ Timing

Total: 972ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`192.243.85.36`
NS	4	`pdns85.ultradns.biz, pdns85.ultradns.com...`
MX	1	`mail.eppg.com (pri: 0)`
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

improvemarks.com resolves to a single IP: 192.243.85.36.

Other host names, for instance istudyom.ca, aleksppl.com, istudywriting.ca, istudynutrition.ca and istudycomposition.com share IP numbers with improvemarks.com.

Name Servers

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

improvemarks.com shares some name servers with other domains, for example schoolmatters.org, mhnetplus3e.com, catonline2010.com, duttononline.com and mheducation.com.ph.

Host names with two IP numbers

Two IPs per host:

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

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

improvemarks.com shares the mail server setup with other domains, for example dlmexpressonline.com, mcconnellbriefmicro1e.com, mhschool.com, diagnosaurus.com and mhaplusolc.com.

improvemarks.com shares some mail servers with other domains, at least partially; for instance mcgraw-hill.com.au, wrightskills.com, primarysourceinvestigator.com, qbpremier09.com and mhcontemporary.com.

improvemarks.com - robtex.com