`cardiacsurgeryoptions.com`

DNSSEC	⚠️ Not signed
A	3.33.139.32^{🇺🇸 Amazon3.33.128.0/20}
		PTR	`aeedc42b70c898c66.awsglobalaccelerator.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`
NS	`ns5.markmonitor.com`
		A	2620:10a:80a8::2^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.2^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns6.markmonitor.com`
		A	2001:67c:10b8::3^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns6.markmonitor.com`
		A	176.97.158.3^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns6.markmonitor.com`
NS	`ns7.markmonitor.com`
		A	2620:10a:80a9::2^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.2^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
SOA	`ns1.markmonitor.com`hostmaster@markmonitor.com 2025-09-19 #1

`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=1785176527

Same first word

cardiacsurgeryoptions.com

DNS History

12 records (8 active, 4 former)

●NSns1.markmonitor.com2026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

○NSns19.worldnic.com2016-12-18 → 2017-08-12 · 4 obs

● 2016-12-18 23:30:18
● 2017-08-12 11:21:00
○ 2026-06-19 22:59:26
○ 2026-07-27 18:35:42

●NSns2.markmonitor.com2026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

○NSns20.worldnic.com2016-12-18 → 2017-08-12 · 4 obs

● 2016-12-18 23:30:18
● 2017-08-12 11:21:00
○ 2026-06-19 22:59:26
○ 2026-07-27 18:35:42

●NSns3.markmonitor.com2026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

●NSns4.markmonitor.com2026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

●NSns5.markmonitor.com2026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

●NSns6.markmonitor.com2026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

●NSns7.markmonitor.com2026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

○MXp.webcom.ctmail.com2016-12-18 → 2017-08-12 · 4 obs

● 2016-12-18 23:30:18
● 2017-08-12 11:21:00
○ 2026-06-19 22:59:26
○ 2026-07-27 18:35:42

○A205.178.189.1312016-12-18 → 2017-08-12 · 4 obs

● 2016-12-18 23:30:18
● 2017-08-12 11:21:00
○ 2026-06-19 22:59:26
○ 2026-07-27 18:35:42

●A3.33.139.322026-06-19 → 2026-07-27 · 3 obs

○ 2017-08-12 11:21:00
● 2026-06-19 22:59:26
● 2026-07-27 18:35:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cardiacsurgeryoptions.com	ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com...	14 records

✅ Authoritative Response

Server:149.112.161.1

NS records: ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com, ns2.markmonitor.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cardiacsurgeryoptions.com (unsigned zone)

⏱️ Timing

Total: 189ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.33.139.32`
NS	7	`ns7.markmonitor.com, ns5.markmonitor.com...`
SOA	1	`ns1.markmonitor.com hostmaster.markmonit`

📌 Glue Records Collected

Total: 14

Out-of-bailiwick: 14 (ns1.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com...)

Analysis

IP Addresses

cardiacsurgeryoptions.com points to a single IP number: 3.33.139.32.

Additional host names — computerworld.tv, amazonvideoreview.com, biztexting.com and two others — share IP numbers with cardiacsurgeryoptions.com.

Name Servers

cardiacsurgeryoptions.com has 7 name servers — ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and 4 others.

At least some of cardiacsurgeryoptions.com's name servers are shared with other domains, for example yazmindiamond.com, nivcoloringbible.com, gousaapp.com and two more.

These name servers are often deployed together with the name servers ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.

Host names with two IP numbers:

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

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

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

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

ns5.markmonitor.com resolves to 149.112.160.2 and 2620:10a:80a8::2.

ns6.markmonitor.com resolves to 176.97.158.3 and 2001:67c:10b8::3.

ns7.markmonitor.com resolves to 149.112.161.2 and 2620:10a:80a9::2.