mx.construct.cz - robtex.com

mx.construct.cz

DNSSEC⚠️ Not signed
A84.21.115.50🇨🇿 COMA84.21.96.0/19 Aggregate for CZ-COMA-20040913
PTRcl084021115050.unet.cz

construct.cz

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:94f🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:bd2e🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.9.79Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.189.46🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSkara.ns.cloudflare.com ⭐
NSlars.ns.cloudflare.com
MXmx2.construct.cz ⭐
MXmail.comacomp.cz(300)
MXmx.construct.cz(500)
MXmail.construct.cz(10000)
TXTv=spf1 ip4:85.163.104.2 ip4:83.167.250.161 ip4:84.16.96.6 ip4:84.21.115.50 ip...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.9.79, 172.67.189.46
IPv6 hints2606:4700:3030::6815:94f, 2606:4700:3035::ac43:bd2e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=101, name=cloudflare-ech.com
SOAkara.ns.cloudflare.comdns@cloudflare.com serial=2402134434
WOT: SAFE (62/100)
WOT: SAFE (76/100)

MX for

construct.cz

Same first word

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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
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mx.ma
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mx.sh
mx.ax
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Similar names

xm.cm
xm.co
xm.co.za
xm.kiev.ua
xm.js.cn
xm.cc
xm.by
xm.world
xm.lt
xm.com.ua
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xm.se
xm.hu
xm.com.co
xm.africa
xm.fi
xm.is
xm.am
xm.money
xm.be
xm.cz
xm.hk.cn
xm.fj.cn
xm.pl
xm.vn.ua
xm.house
xm.mk
xm.com

DNS History

1 record (1 active, 0 former)

20162017201820192020202120222023202420252026A84.21.115.50
●A84.21.115.502015-08-13 → 2026-05-09 · 2 obs
● 2015-08-13 22:06:36
● 2026-05-09 15:40:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
construct.czkara.ns.cloudflare.com, lars.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.123

NS records: kara.ns.cloudflare.com, lars.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for construct.cz (unsigned zone)

⏱️ Timing

Total: 761ms | Queries: -

📄 Records

TypeCountSample Data
A184.21.115.50

Analysis

Mail Server Role

mx.construct.cz serves as the mail server for construct.cz.

mail.comacomp.cz, mail.construct.cz and mx2.construct.cz commonly serve as mail servers alongside mx.construct.cz.

IP Addresses

mx.construct.cz resolves to a single IP: 84.21.115.50.

Other host names share IP numbers with mx.construct.cz; for instance cl084021115050.unet.cz.