🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`mx1.sysadmin.host`

DNSSEC	⚠️ Not signed
A	100.42.188.231^{🇺🇸 CONTABO100.42.184.0/21}
		PTR	`mx1.sysadmin.host`
TXT	`v=spf1 a -all`

`sysadmin.host`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3032::6815:5cf8^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:c901^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.92.248^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.201.1^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dora.ns.cloudflare.com` ⭐
NS	`jay.ns.cloudflare.com`
MX	`mx1.sysadmin.host` ⭐
MX	`mail.protonmail.ch`⁽¹¹⁾
MX	`mailsec.protonmail.ch`⁽²⁰⁾
MX	`alt1.aspmx.l.google.com`⁽⁴⁰⁾
MX	`aspmx.l.google.com`⁽⁵⁰⁾
TXT	`google-site-verification=48EcIOpJWiONUM80LLW3gsSToLSvDwF0J2n87CK57nk`
TXT	`mailyard-verification=895f932d2f3f53da2297b288c64c4afd`
TXT	`protonmail-verification=b03baeed7ff2966cde07e4bfebe30713f31b3311`
TXT	`v=spf1 include:_spf.protonmail.ch include:_spf.google.com include:spf.mailjet...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.92.248, 172.67.201.1
		IPv6 hints	2606:4700:3032::6815:5cf8, 2606:4700:3036::ac43:c901
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=97, name=cloudflare-ech.com
SOA	`dora.ns.cloudflare.com`dns@cloudflare.com serial=2413799014

PTR for

231.188.42.100.in-addr.arpa

MX for

sysadmin.host

Same first word

mx1.com.mx

mx1.ws

mx1.cc

mx1.in-berlin.de

mx1.kinghost.net

mx1.fr

mx1.dev

mx1.it

mx1.ch

mx1.tuxfamily.org

mx1.org

mx1.nl

mx1.ee

mx1.club

mx1.ca

mx1.com.cn

mx1.blogspot.com

mx1.net

mx1.me

mx1.mx

mx1.info

mx1.cn

mx1.uni5.net

mx1.com.au

mx1.net.au

mx1.ph

mx1.at

mx1.sp.gov.br

mx1.email

mx1.co.za

mx1.jp

mx1.cci.fr

mx1.kapsi.fi

mx1.net.br

mx1.cloudaccess.net

mx1.pb.gov.br

mx1.sa.com

mx1.na4u.ru

mx1.biz

mx1.tv

mx1.pl

mx1.gouv.km

mx1.us

mx1.in

mx1.gouv.ci

mx1.lt

mx1.workers.dev

mx1.gov.lk

mx1.vg

mx1.com.br

mx1.online

mx1.ltd

mx1.com

mx1.uk

mx1.gov.sc

mx1.io

mx1.gov.ls

mx1.hu

mx1.za.com

mx1.cz

mx1.xyz

mx1.bet

mx1.eu

mx1.mex.com

mx1.de

Similar names

1xm.cn

m1x.net.ph

1xm.co

xm1.ru

1mx.ai

1mx.game

m1x.org

x1m.ru

1mx.xyz

xm1.dev

m1x.team

m1x.de

1mx.cn

xm1.club

1mx.eu

xm1.me

xm1.shop

m1x.bet

m1x.pl

m1x.com

xm1.net

xm1.com

m1x.co.in

xm1.co

m1x.it

xm1.workers.dev

1mx.cc

1mx.ru

1xm.pics

m1x.ro

m1x.co

xm1.cc

m1x.ch

x1m.my

1xm.ai

1mx.net

1mx.me

x1m.nl

x1m.net

m1x.nl

1mx.onl

m1x.dk

m1x.rest

m1x.ru

x1m.com

m1x.ph

xm1.org

1mx.com.br

m1x.eu

x1m.xyz

1xm.de

1xm.ph

m1x.dev

m1x.net

1mx.de

1mx.dk

x1m.de

1xm.net.ph

1xm.ru

xm1.site

1xm.com

1mx.co

Previous names

Next names

DNS History

1 record (1 active, 0 former)

●A100.42.188.2312026-09-02 → 2026-09-02 · 2 obs

● 2026-09-02 04:15:36
● 2026-09-02 04:27:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
host	ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info	8 records
sysadmin.host	jay.ns.cloudflare.com, dora.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.108

NS records: jay.ns.cloudflare.com, dora.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 298ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`100.42.188.231`
TXT	1	`v=spf1 a -all`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org...)

Analysis

Mail Server Role

sysadmin.host uses mx1.sysadmin.host as a mail server.

mail.protonmail.ch, mailsec.protonmail.ch and aspmx.l.google.com tend to be used as mail servers in tandem with mx1.sysadmin.host.

IP Addresses

mx1.sysadmin.host resolves to one IP address: 100.42.188.231.

mx1.sysadmin.host - robtex.com