`mx.hearttechnology.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:cc86^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:428d^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.66.141^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.204.134^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.66.141, 172.67.204.134
		IPv6 hints	2606:4700:3031::ac43:cc86, 2606:4700:3034::6815:428d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=10, name=cloudflare-ech.com

Previously MX for

hearttechnology.com

Same first word

mx.ht

mx.uk

mx.no

mx.cloud.nospamproxy.com

mx.agency

mx.rs

mx.vc

mx.cloudflare.net

mx.ws

mx.plus

mx.zone

mx.co.za

mx.tours

mx.s3.amazonaws.com

mx.com.tw

mx.vu

mx.biz

mx.ms

mx.net.tr

mx.network

mx.se.gov.br

mx.gy

mx.contact

mx.pe

mx.realm.cz

mx.tn

mx.mk

mx.exchange

mx.kh.ua

mx.md

mx.to

mx.cm

mx.graphics

mx.cx

mx.support

mx.myftp.org

mx.duckdns.org

mx.kinghost.net

mx.gouv.ci

mx.money

mx.kasserver.com

mx.com.ar

mx.sytes.net

mx.center

mx.withyoutube.com

mx.mba

mx.co.uk

mx.s3-website-eu-west-1.amazonaws.com

mx.s3-website-us-east-1.amazonaws.com

mx.design

mx.s3-website-us-west-1.amazonaws.com

mx.msk.ru

mx.scrapping.cc

mx.tv

mx.casino

mx.ma

mx.dyndns.org

mx.sh

mx.ax

mx.lv

mx.abbott

mx.or.at

mx.cn

mx.servebbs.org

mx.tc

mx.microsoft

mx.solutions

mx.ph

mx.st

mx.com.tr

mx.be

mx.guru

mx.selfip.com

mx.co

mx.ro

mx.com.kz

mx.ru.net

mx.firewall-gateway.de

mx.mayfirst.org

mx.ag

mx.ee

mx.net.ru

mx.ae

mx.fi

mx.cz

mx.co.kr

mx.net

mx.box

mx.homelinux.com

mx.dnsalias.com

mx.se

mx.srv.br

mx.si

mx.de

mx.org.ua

mx.hn

mx.com.co

mx.nl

mx.com

mx.canva-apps.cn

Similar names

xm.biz

xm.media

xm.fyi

xm.pe

xm.wtf

xm.nl

xm.app

xm.cn

xm.gov.cn

xm.city

xm.ca

xm.ee

xm.ae

xm.lc

xm.chat

xm.life

xm.net

xm.cm

xm.ke

mx.al

mx

mx.org

mx.net.au

mx.berlin

mx.sb

mx.sub.jp

mx.nf

mx.kg

xm.co

xm.com.cn

mx.fm

mx.dk

mx.mil.lv

xm.co.za

mx.is

mx.ac.cn

mx.uz

mx.mt

mx.lt

xm.kiev.ua

xm.js.cn

xm.cc

xm.by

mx.co.at

mx.ua

mx.csb.app

mx.au

xm.world

xm.lt

mx.go.gov.br

mx.com.mx

mx.dev

xm.com.ua

mx.od.ua

mx.su

xm.ru

mx.com.au

mx.123hjemmeside.no

mx.cl

mx.by

mx.tm

mx.main.jp

xm.de

mx.bplaced.net

mx.uy

mx.dyndns-mail.com

xm.cl

mx.io

mx.co.ke

mx.vg

mx.gp

mx.cloudaccess.net

mx.s3-us-west-1.amazonaws.com

mx.gs

xm.sk

mx.global.prod.fastly.net

mx.email

xm.se

xm.hu

mx.com.pt

mx.ru

mx.services

mx.pl

xm.com.co

xm.hl.cn

xm.africa

xm.fi

xm.is

xm.co.kr

xm.am

xm.money

xm.be

xm.cz

xm.hk.cn

xm.fj.cn

xm.pl

xm.vn.ua

xm.house

xm.mk

xm.la

DNS History

14 records (4 active, 10 former)

●A104.21.66.1412026-03-25 → 2026-08-14 · 10 obs

○ 2016-07-10 01:39:46
● 2026-03-25 08:46:08
○ 2026-03-29 09:08:50
● 2026-04-14 08:21:20
○ 2026-04-21 14:34:34
● 2026-04-24 18:09:20
● 2026-05-01 06:39:56
○ 2026-05-04 00:57:02
● 2026-05-06 05:42:16
● 2026-08-14 03:28:20

●A172.67.204.1342026-03-25 → 2026-08-14 · 10 obs

○A188.114.96.02026-03-29 → 2026-05-04 · 9 obs

○ 2026-03-25 08:46:08
● 2026-03-29 09:08:50
○ 2026-04-14 08:21:20
● 2026-04-21 14:34:34
○ 2026-04-24 18:09:20
○ 2026-05-01 06:39:56
● 2026-05-04 00:57:02
○ 2026-05-06 05:42:16
○ 2026-08-14 03:28:20

○A188.114.97.02026-03-29 → 2026-05-04 · 9 obs

○A2606:4700:3031::6815:428d2026-03-25 → 2026-06-17 · 12 obs

●A2606:4700:3031::ac43:cc862026-08-08 → 2026-08-14 · 3 obs

○ 2026-06-17 04:11:58
● 2026-08-08 20:26:50
● 2026-08-14 03:28:20

○A2606:4700:3033::ac43:cc862026-03-25 → 2026-06-17 · 12 obs

●A2606:4700:3034::6815:428d2026-08-08 → 2026-08-14 · 3 obs

○ 2026-06-17 04:11:58
● 2026-08-08 20:26:50
● 2026-08-14 03:28:20

○A2a06:98c1:3120::2026-03-29 → 2026-05-04 · 9 obs

○A2a06:98c1:3121::2026-03-29 → 2026-05-04 · 9 obs

○A66.96.142.502015-08-07 → 2016-07-10 · 4 obs

● 2015-08-07 02:25:22
● 2016-07-10 01:39:46
○ 2026-03-25 08:46:08
○ 2026-08-14 03:28:20

○A66.96.142.512015-08-07 → 2016-07-10 · 4 obs

● 2015-08-07 02:25:22
● 2016-07-10 01:39:46
○ 2026-03-25 08:46:08
○ 2026-08-14 03:28:20

○A66.96.142.522015-08-07 → 2016-07-10 · 4 obs

● 2015-08-07 02:25:22
● 2016-07-10 01:39:46
○ 2026-03-25 08:46:08
○ 2026-08-14 03:28:20

○CNAMEwebsites055.homestead.com2015-08-07 → 2016-07-10 · 4 obs

● 2015-08-07 02:25:22
● 2016-07-10 01:39:46
○ 2026-03-25 08:46:08
○ 2026-08-14 03:28:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
hearttechnology.com	joel.ns.cloudflare.com, anita.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.82

NS records: joel.ns.cloudflare.com, anita.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hearttechnology.com (unsigned zone)

⏱️ Timing

Total: 167ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.66.141, 172.67.204.134`
AAAA	2	`2606:4700:3031::ac43:cc86, 2606:4700:3034::6815:428d`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (joel.ns.cloudflare.com, joel.ns.cloudflare.com, joel.ns.cloudflare.com...)

Analysis

IP Addresses

mx.hearttechnology.com points to the four IP addresses 104.21.66.141, 172.67.204.134, 2606:4700:3031::ac43:cc86 and 2606:4700:3034::6815:428d.

Among the host names that share IP numbers with mx.hearttechnology.com are news.prfree.org, b7d31dfb5221.glasgoworthodontics.co.uk, krab10at.com and two others.

mx.hearttechnology.com - robtex.com