mx.1stmailer.com - robtex.com

mx.1stmailer.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:14cf🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:c268🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.20.207Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.194.104🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.20.207, 172.67.194.104
IPv6 hints2606:4700:3033::6815:14cf, 2606:4700:3034::ac43:c268
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=31, name=cloudflare-ech.com

1stmailer.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:14cf🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:c268🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.20.207Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.194.104🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSmargaret.ns.cloudflare.com ⭐
NSrommy.ns.cloudflare.com
MXmx1.1stmailer.com ⭐
MXmx2.1stmailer.com(20)
TXTv=spf1 include:spf.1stmailer.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.20.207, 172.67.194.104
IPv6 hints2606:4700:3033::6815:14cf, 2606:4700:3034::ac43:c268
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=31, name=cloudflare-ech.com
SOAmargaret.ns.cloudflare.comdns@cloudflare.com serial=2409922552

Previously MX for

serverv.kr

Same first word

mx.mil.lv
mx.is
mx.ac.cn
mx.uz
mx.mt
mx.lt
mx.co.at
mx.ua
mx.csb.app
mx.au
mx.go.gov.br
mx.com.mx
mx.dev
mx.od.ua
mx.su
mx.com.au
mx.123hjemmeside.no
mx.cl
mx.by
mx.main.jp
mx.bplaced.net
mx.uy
mx.dyndns-mail.com
mx.io
mx.co.ke
mx.vg
mx.gp
mx.cloudaccess.net
mx.s3-us-west-1.amazonaws.com
mx.gs
mx.global.prod.fastly.net
mx.email
mx.com.pt
mx.ru
mx.services
mx.pl
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.tn
mx.mk
mx.exchange
mx.kh.ua
mx.md
mx.to
mx.cm
mx.graphics
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.ph
mx.com.tr
mx.be
mx.guru
mx.selfip.com
mx.co
mx.ro

Similar names

mx.com.co
mx.nl
mx.com
xm.cm
mx.canva-apps.cn
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
xm.co.za
xm.kiev.ua
xm.js.cn
xm.cc
xm.by
xm.world
xm.lt
xm.com.ua
xm.ru
xm.de
xm.cl
xm.sk
xm.se
xm.hu
xm.com.co
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
xm.com

DNS History

5 records (4 active, 1 former)

2020202120222023202420252026A104.21.20.207172.67.194.1042606:4700:3033::6815:14cf2606:4700:3034::ac43:c26849.247.9.41
●A104.21.20.2072026-07-25 → 2026-07-25 · 3 obs
○ 2019-12-20 11:17:06
● 2026-07-25 17:51:56
● 2026-07-25 17:51:58
●A172.67.194.1042026-07-25 → 2026-07-25 · 3 obs
○ 2019-12-20 11:17:06
● 2026-07-25 17:51:56
● 2026-07-25 17:51:58
●A2606:4700:3033::6815:14cf2026-07-25 → 2026-07-25 · 3 obs
○ 2019-12-20 11:17:06
● 2026-07-25 17:51:56
● 2026-07-25 17:51:58
●A2606:4700:3034::ac43:c2682026-07-25 → 2026-07-25 · 3 obs
○ 2019-12-20 11:17:06
● 2026-07-25 17:51:56
● 2026-07-25 17:51:58
○A49.247.9.412019-12-20 → 2019-12-20 · 3 obs
● 2019-12-20 11:17:06
○ 2026-07-25 17:51:56
○ 2026-07-25 17:51:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
1stmailer.commargaret.ns.cloudflare.com, rommy.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.20

NS records: margaret.ns.cloudflare.com, rommy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1stmailer.com (unsigned zone)

⏱️ Timing

Total: 107ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.20.207, 172.67.194.104
AAAA22606:4700:3034::ac43:c268, 2606:4700:3033::6815:14cf
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mx.1stmailer.com directs to four IP numbers, which are 104.21.20.207, 172.67.194.104, 2606:4700:3033::6815:14cf and 2606:4700:3034::ac43:c268.

Two other host names, along with greenwillgroup.com, liesjetzt.de and prospect360.co.uk, also share IP numbers with mx.1stmailer.com.