`cardiovascularsystem.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:5c14^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:b8fc^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.92.20^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.184.252^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jen.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26b9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2b9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jen.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22b9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jen.ns.cloudflare.com`
		A	108.162.194.185^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
		A	162.159.38.185^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
		A	172.64.34.185^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jen.ns.cloudflare.com`
NS	`porter.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cf3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`porter.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3f3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`porter.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23f3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`porter.ns.cloudflare.com`
		A	108.162.195.243^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`porter.ns.cloudflare.com`
		A	162.159.44.243^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`porter.ns.cloudflare.com`
		A	172.64.35.243^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`porter.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.92.20, 172.67.184.252
		IPv6	2606:4700:3036::6815:5c14, 2606:4700:3037::ac43:b8fc
SOA	`jen.ns.cloudflare.com`dns@cloudflare.com serial=2399561276

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1774609685

Previously MX for

cardiovascularsystem.org

Same first word

cardiovascularsystem.org

DNS History

18 records (6 active, 12 former)

●NSjen.ns.cloudflare.com2026-02-16 → 2026-03-27 · 3 obs

○ 2015-06-17 22:37:16
● 2026-02-16 15:33:04
● 2026-03-27 11:43:10

○NSns6033.hostgator.com2015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 22:37:16
○ 2026-02-16 15:33:04
○ 2026-03-27 11:43:10

○NSns6034.hostgator.com2015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 22:37:16
○ 2026-02-16 15:33:04
○ 2026-03-27 11:43:10

●NSporter.ns.cloudflare.com2026-02-16 → 2026-03-27 · 3 obs

○ 2015-06-17 22:37:16
● 2026-02-16 15:33:04
● 2026-03-27 11:43:10

○MXcardiovascularsystem.org2015-06-17 → 2026-02-16 · 4 obs

● 2015-06-17 22:37:16
● 2026-02-16 15:33:04
○ 2026-02-22 22:28:30
○ 2026-03-27 11:43:10

●A104.21.92.202026-03-07 → 2026-03-27 · 3 obs

○ 2026-02-22 22:28:30
● 2026-03-07 21:20:04
● 2026-03-27 11:43:10

●A172.67.184.2522026-03-07 → 2026-03-27 · 3 obs

○ 2026-02-22 22:28:30
● 2026-03-07 21:20:04
● 2026-03-27 11:43:10

○A188.114.96.02026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-16 15:33:04
● 2026-02-22 22:28:30
○ 2026-03-07 21:20:04
○ 2026-03-27 11:43:10

○A188.114.96.42026-02-16 → 2026-02-16 · 4 obs

○ 2015-06-17 22:37:16
● 2026-02-16 15:33:04
○ 2026-02-22 22:28:30
○ 2026-03-27 11:43:10

○A188.114.97.02026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-16 15:33:04
● 2026-02-22 22:28:30
○ 2026-03-07 21:20:04
○ 2026-03-27 11:43:10

○A188.114.97.42026-02-16 → 2026-02-16 · 4 obs

○ 2015-06-17 22:37:16
● 2026-02-16 15:33:04
○ 2026-02-22 22:28:30
○ 2026-03-27 11:43:10

●A2606:4700:3036::6815:5c142026-03-07 → 2026-03-27 · 3 obs

○ 2026-02-22 22:28:30
● 2026-03-07 21:20:04
● 2026-03-27 11:43:10

●A2606:4700:3037::ac43:b8fc2026-03-07 → 2026-03-27 · 3 obs

○ 2026-02-22 22:28:30
● 2026-03-07 21:20:04
● 2026-03-27 11:43:10

○A2a06:98c1:3120::2026-02-16 → 2026-02-16 · 4 obs

○ 2015-06-17 22:37:16
● 2026-02-16 15:33:04
○ 2026-02-22 22:28:30
○ 2026-03-27 11:43:10

○A2a06:98c1:3120::42026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-16 15:33:04
● 2026-02-22 22:28:30
○ 2026-03-07 21:20:04
○ 2026-03-27 11:43:10

○A2a06:98c1:3121::2026-02-16 → 2026-02-16 · 4 obs

○ 2015-06-17 22:37:16
● 2026-02-16 15:33:04
○ 2026-02-22 22:28:30
○ 2026-03-27 11:43:10

○A2a06:98c1:3121::42026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-16 15:33:04
● 2026-02-22 22:28:30
○ 2026-03-07 21:20:04
○ 2026-03-27 11:43:10

○A50.87.147.1312015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 22:37:16
○ 2026-02-16 15:33:04
○ 2026-03-27 11:43:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
cardiovascularsystem.org	jen.ns.cloudflare.com, porter.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.243

NS records: jen.ns.cloudflare.com, porter.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cardiovascularsystem.org (unsigned zone)

⏱️ Timing

Total: 584ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.92.20, 172.67.184.252`
AAAA	2	`2606:4700:3036::6815:5c14, 2606:4700:3037::ac43:b8fc`
NS	2	`jen.ns.cloudflare.com, porter.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jen.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

cardiovascularsystem.org maps to four IP numbers: 2606:4700:3036::6815:5c14, 2606:4700:3037::ac43:b8fc, 104.21.92.20 and 172.67.184.252.

Other host names such as eunicetravel.com, crcne.com, betasus-gir.com, certoetiquetas.com.br and (0x736578)72.org share IPs with cardiovascularsystem.org.

Name Servers

Two name servers jen.ns.cloudflare.com and porter.ns.cloudflare.com handle the delegation for cardiovascularsystem.org.

cardiovascularsystem.org shares the same name server setup as other domains, for example homerefinancetips.com, perfume-buy.com, onlyalist.com, golfcartguys.com and monsterparents.com.

cardiovascularsystem.org at least partially shares name servers with other domains, for example kravo.com, usabonuscodes.com, musang178ledak.com, lyzwbs.com and trailnose.com.

These name servers are often used together with rayden.ns.cloudflare.com and tess.ns.cloudflare.com.

Host names with six IP numbers:

jen.ns.cloudflare.com points to 2606:4700:50::a29f:26b9, 2803:f800:50::6ca2:c2b9, 2a06:98c1:50::ac40:22b9, 108.162.194.185, 162.159.38.185 and 172.64.34.185.

porter.ns.cloudflare.com points to 2606:4700:58::a29f:2cf3, 2803:f800:50::6ca2:c3f3, 2a06:98c1:50::ac40:23f3, 108.162.195.243, 162.159.44.243 and 172.64.35.243.

cardiovascularsystem.org - robtex.com