mx.write.cz - dns.ninja

mx.write.cz

DNSSEC⚠️ Not signed
A37.157.193.16🇨🇿 WEDOS37.157.192.0/21 Internet, a.s.

write.cz

DNSSEC🔒 Signed (DS record present)
A2606:4700:3030::6815:41e6🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:9817🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.65.230Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.152.23🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgraham.ns.cloudflare.com ⭐
NSnadia.ns.cloudflare.com
MXa43eaa322210d865.mx2.emailprofi.seznam.cz ⭐
MXa43eaa322210d865.mx1.emailprofi.seznam.cz(20)
TXTgoogle-site-verification=DAIkZjwLNv8HiID8glJAoRxrRrVRVZFkpzc_RTJlufc
TXTgoogle-site-verification=vEX4pNxgYqxviSGJObdat34bgBPrOPUtYWtPxLUejcI
TXTv=spf1 include:_hosting.write.cz include:_spf.google.com include:spf.seznam.c...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.65.230, 172.67.152.23
IPv6 hints2606:4700:3030::6815:41e6, 2606:4700:3033::ac43:9817
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=230, name=cloudflare-ech.com
SOAgraham.ns.cloudflare.comdns@cloudflare.com serial=2411079463

MX for

rychlaguma.cz

Previously MX for

aquas.cz
havrda.com
write.cz
stools.cz

Same first word

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mx.design
mx.s3-website-us-west-1.amazonaws.com
mx.msk.ru
mx.scrapping.cc
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mx.lv
mx.abbott
mx.or.at
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mx.ph
mx.st

Similar names

xm.kiev.ua
xm.js.cn
xm.cc
xm.by
xm.world
xm.lt
xm.com.ua
xm.ru
xm.de
xm.cl
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xm.am
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xm.be
xm.cz
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xm.fj.cn
xm.pl
xm.vn.ua
xm.house
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xm.la

DNS History

1 record (1 active, 0 former)

A37.157.193.16
●A37.157.193.162026-03-25 → 2026-08-02 · 2 obs
● 2026-03-25 17:14:00
● 2026-08-02 04:44:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
czd.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz-
write.cznadia.ns.cloudflare.com, graham.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.171

NS records: nadia.ns.cloudflare.com, graham.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 327ms | Queries: -

📄 Records

TypeCountSample Data
A137.157.193.16

Analysis

Mail Server Role

mx.write.cz serves as a mail server for rychlaguma.cz.

postak.write.cz routinely functions as a mail server together with mx.write.cz.

IP Addresses

mx.write.cz points to a single IP number: 37.157.193.16.