`hearthealthstudy.com`

DNSSEC	⚠️ Not signed
A	34.250.193.126^{🇮🇪 Amazon34.248.0.0/13 EC2 DUB prefix}
		PTR	`ec2-34-250-193-126.eu-west-1.compute.amazonaws.com`
NS	`ns1.markmonitor.com` ⭐
		A	2620:10a:80a8::1^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.1^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns2.markmonitor.com`
		A	2001:67c:10b8::1^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.markmonitor.com`
		A	176.97.158.1^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.markmonitor.com`
NS	`ns3.markmonitor.com`
		A	2620:10a:80a9::1^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.1^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns4.markmonitor.com`
		A	2001:67c:1bc::1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.markmonitor.com`
		A	192.174.68.1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.markmonitor.com`
SOA	`ns1.markmonitor.com`hostmaster@markmonitor.com 2025-11-21 #4

`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=1777066151

Same first word

hearthealthstudy.com

DNS History

18 records (5 active, 13 former)

●NSns1.markmonitor.com2026-02-19 → 2026-04-24 · 3 obs

○ 2017-11-24 11:15:20
● 2026-02-19 21:03:36
● 2026-04-24 21:46:32

●NSns2.markmonitor.com2026-02-19 → 2026-04-24 · 3 obs

○ 2017-11-24 11:15:20
● 2026-02-19 21:03:36
● 2026-04-24 21:46:32

●NSns3.markmonitor.com2026-02-19 → 2026-04-24 · 3 obs

○ 2017-11-24 11:15:20
● 2026-02-19 21:03:36
● 2026-04-24 21:46:32

●NSns4.markmonitor.com2026-02-19 → 2026-04-24 · 3 obs

○ 2017-11-24 11:15:20
● 2026-02-19 21:03:36
● 2026-04-24 21:46:32

○NSpdns07.domaincontrol.com2016-12-19 → 2017-11-24 · 4 obs

● 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○NSpdns08.domaincontrol.com2016-12-19 → 2017-11-24 · 4 obs

● 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○MXmailstore1.secureserver.net2016-12-19 → 2017-11-24 · 4 obs

● 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○MXsmtp.secureserver.net2016-12-19 → 2017-11-24 · 4 obs

● 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○A184.168.221.452017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

●A34.250.193.1262026-02-19 → 2026-04-24 · 3 obs

○ 2017-11-24 11:15:20
● 2026-02-19 21:03:36
● 2026-04-24 21:46:32

○A50.63.202.342016-12-19 → 2016-12-19 · 3 obs

● 2016-12-19 03:25:54
○ 2017-11-24 11:15:20
○ 2026-04-24 21:46:32

○A50.63.202.422017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○A50.63.202.482017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○A50.63.202.492017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○A50.63.202.542017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○A50.63.202.552017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○A50.63.202.572017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

○A50.63.202.632017-11-24 → 2017-11-24 · 4 obs

○ 2016-12-19 03:25:54
● 2017-11-24 11:15:20
○ 2026-02-19 21:03:36
○ 2026-04-24 21:46:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
hearthealthstudy.com	ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns2.markmonitor.com	8 records

✅ Authoritative Response

Server:149.112.160.1

NS records: ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns2.markmonitor.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hearthealthstudy.com (unsigned zone)

⏱️ Timing

Total: 327ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`34.250.193.126`
NS	4	`ns1.markmonitor.com, ns2.markmonitor.com...`
SOA	1	`ns1.markmonitor.com hostmaster.markmonit`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns1.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com...)

Analysis

IP Addresses

hearthealthstudy.com points to a single IP address: 34.250.193.126.

Other host names such as hearthealthtracking.com and observationalheartstudy.com share IP numbers with hearthealthstudy.com.

Name Servers

hearthealthstudy.com is delegated to four name servers: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and ns4.markmonitor.com.

At least part of the name servers for hearthealthstudy.com are shared with other domains, for instance mardi-gras.net, stubhub.com.ky, protontech.com, waxiesupply.net and mailreddit.com.

These name servers are often used together with ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.

Host names with two IP numbers:

ns1.markmonitor.com points to: 2620:10a:80a8::1 and 149.112.160.1

ns2.markmonitor.com points to: 2001:67c:10b8::1 and 176.97.158.1

ns3.markmonitor.com points to: 2620:10a:80a9::1 and 149.112.161.1

ns4.markmonitor.com points to: 2001:67c:1bc::1 and 192.174.68.1

hearthealthstudy.com - robtex.com