mail.stack-systems.com - dns.ninja

mail.stack-systems.com

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:597e🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:bd44🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.89.126Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.189.68🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.89.126, 172.67.189.68
IPv6 hints2606:4700:3036::6815:597e, 2606:4700:3037::ac43:bd44
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=64, name=cloudflare-ech.com

stack-systems.com

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:597e🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:bd44🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.89.126Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.189.68🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSernest.ns.cloudflare.com ⭐
NSmegan.ns.cloudflare.com
MXmail.stack-systems.com ⭐
MXmx2.zoho.eu ⭐
MXmx3.zoho.eu(20)
MXmx.zoho.eu(50)
TXTgoogle-site-verification=gfF-kKJKybHqFQFbj9DJ2aAyjneA08o2bbEDxk2yQ5Q
TXTv=spf1 include:zoho.eu ~all
TXTzoho-verification=zb72572405.zmverify.zoho.eu
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.89.126, 172.67.189.68
IPv6 hints2606:4700:3036::6815:597e, 2606:4700:3037::ac43:bd44
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=64, name=cloudflare-ech.com
SOAernest.ns.cloudflare.comdns@cloudflare.com serial=2408782726

MX for

stack-systems.com

Same first word

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DNS History

6 records (4 active, 2 former)

A104.21.89.126172.67.189.682606:4700:3036::6815:597e2606:4700:3037::ac43:bd442606:4700:3033::ac43:bd442606:4700:3037::6815:597e
●A104.21.89.1262026-03-25 → 2026-07-27 · 2 obs
● 2026-03-25 02:16:08
● 2026-07-27 20:00:34
●A172.67.189.682026-03-25 → 2026-07-27 · 2 obs
● 2026-03-25 02:16:08
● 2026-07-27 20:00:34
○A2606:4700:3033::ac43:bd442026-03-25 → 2026-06-17 · 4 obs
● 2026-03-25 02:16:08
● 2026-06-17 02:55:42
○ 2026-07-13 14:49:16
○ 2026-07-27 20:00:34
●A2606:4700:3036::6815:597e2026-07-13 → 2026-07-27 · 3 obs
○ 2026-06-17 02:55:42
● 2026-07-13 14:49:16
● 2026-07-27 20:00:34
○A2606:4700:3037::6815:597e2026-03-25 → 2026-06-17 · 4 obs
● 2026-03-25 02:16:08
● 2026-06-17 02:55:42
○ 2026-07-13 14:49:16
○ 2026-07-27 20:00:34
●A2606:4700:3037::ac43:bd442026-07-13 → 2026-07-27 · 3 obs
○ 2026-06-17 02:55:42
● 2026-07-13 14:49:16
● 2026-07-27 20:00:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
stack-systems.comernest.ns.cloudflare.com, megan.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.164

NS records: ernest.ns.cloudflare.com, megan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stack-systems.com (unsigned zone)

⏱️ Timing

Total: 130ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.89.126, 172.67.189.68
AAAA22606:4700:3036::6815:597e, 2606:4700:3037::ac43:bd44
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

Mail Server Role

mail.stack-systems.com is a mail server for stack-systems.com.

mx2.zoho.eu, mx3.zoho.eu and mx.zoho.eu commonly appear as mail servers together with mail.stack-systems.com.

IP Addresses

mail.stack-systems.com points to the four IP addresses 104.21.89.126, 172.67.189.68, 2606:4700:3036::6815:597e and 2606:4700:3037::ac43:bd44.

Among the host names that share IP numbers with mail.stack-systems.com are labt.org, www.file-mix.com, nalen24.com and two others.