mailserver.kristof.tech - robtex.com

mailserver.kristof.tech

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:84a3🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:d54🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.13.84Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.132.163🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.13.84, 172.67.132.163
IPv6 hints2606:4700:3033::ac43:84a3, 2606:4700:3034::6815:d54
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=51, name=cloudflare-ech.com

kristof.tech

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:84a3🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:d54🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.13.84Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.132.163🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSaiden.ns.cloudflare.com ⭐
NScruz.ns.cloudflare.com
MXwork-mx.app.hey.com ⭐
TXThey-verification:yVAUsrEnurKB9Ty1jfztsASb
TXTv=spf1 include:_spf.hey.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.13.84, 172.67.132.163
IPv6 hints2606:4700:3033::ac43:84a3, 2606:4700:3034::6815:d54
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=51, name=cloudflare-ech.com
SOAaiden.ns.cloudflare.comdns@cloudflare.com serial=2409589222

Previously MX for

kristof.tech
coder.town

Same first word

mailserver.world
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servermail.com
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DNS History

5 records (4 active, 1 former)

201820192020202120222023202420252026A104.21.13.84172.67.132.1632606:4700:3033::ac43:84a32606:4700:3034::6815:d545.255.78.55
●A104.21.13.842026-07-16 → 2026-07-18 · 3 obs
○ 2017-11-02 15:54:12
● 2026-07-16 12:34:48
● 2026-07-18 02:19:24
●A172.67.132.1632026-07-16 → 2026-07-18 · 3 obs
○ 2017-11-02 15:54:12
● 2026-07-16 12:34:48
● 2026-07-18 02:19:24
●A2606:4700:3033::ac43:84a32026-07-16 → 2026-07-18 · 3 obs
○ 2017-11-02 15:54:12
● 2026-07-16 12:34:48
● 2026-07-18 02:19:24
●A2606:4700:3034::6815:d542026-07-16 → 2026-07-18 · 3 obs
○ 2017-11-02 15:54:12
● 2026-07-16 12:34:48
● 2026-07-18 02:19:24
○A5.255.78.552017-11-02 → 2017-11-02 · 3 obs
● 2017-11-02 15:54:12
○ 2026-07-16 12:34:48
○ 2026-07-18 02:19:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
techns10.trs-dns.org, ns01.trs-dns.net, ns01.trs-dns.com, ns10.trs-dns.info8 records
kristof.techcruz.ns.cloudflare.com, aiden.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.193.55

NS records: cruz.ns.cloudflare.com, aiden.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kristof.tech (unsigned zone)

⏱️ Timing

Total: 289ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.132.163, 104.21.13.84
AAAA22606:4700:3033::ac43:84a3, 2606:4700:3034::6815:d54
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 8

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

Analysis

IP Addresses

mailserver.kristof.tech directs to four IP numbers, which are 104.21.13.84, 172.67.132.163, 2606:4700:3033::ac43:84a3 and 2606:4700:3034::6815:d54.

Two other host names, along with k86sportpsms.pro, botany.hu and mail.grabedentalhealth.com, also share IP numbers with mailserver.kristof.tech.