mail.dd3721.com - robtex.com

mail.dd3721.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:97e3🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:11b🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.1.27Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.227🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.1.27, 172.67.151.227
IPv6 hints2606:4700:3030::ac43:97e3, 2606:4700:3034::6815:11b
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=195, name=cloudflare-ech.com

dd3721.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:97e3🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:11b🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.1.27Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.227🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScleo.ns.cloudflare.com ⭐
NSsummer.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.1.27, 172.67.151.227
IPv6 hints2606:4700:3030::ac43:97e3, 2606:4700:3034::6815:11b
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=195, name=cloudflare-ech.com
SOAcleo.ns.cloudflare.comdns@cloudflare.com serial=2409022444
WOT: SAFE (50/100)
WOT: SUSPICIOUS (38/100)

Previously MX for

dd3721.com

Same first word

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DNS History

4 records (4 active, 0 former)

A104.21.1.27172.67.151.2272606:4700:3030::ac43:97e32606:4700:3034::6815:11b
●A104.21.1.272026-06-24 → 2026-07-15 · 2 obs
● 2026-06-24 21:20:58
● 2026-07-15 08:53:04
●A172.67.151.2272026-06-24 → 2026-07-15 · 2 obs
● 2026-06-24 21:20:58
● 2026-07-15 08:53:04
●A2606:4700:3030::ac43:97e32026-06-24 → 2026-07-15 · 2 obs
● 2026-06-24 21:20:58
● 2026-07-15 08:53:04
●A2606:4700:3034::6815:11b2026-06-24 → 2026-07-15 · 2 obs
● 2026-06-24 21:20:58
● 2026-07-15 08:53:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
dd3721.comcleo.ns.cloudflare.com, summer.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.9

NS records: cleo.ns.cloudflare.com, summer.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dd3721.com (unsigned zone)

⏱️ Timing

Total: 307ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.1.27, 172.67.151.227
AAAA22606:4700:3034::6815:11b, 2606:4700:3030::ac43:97e3
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.dd3721.com resolves to four IP addresses: 104.21.1.27, 172.67.151.227, 2606:4700:3030::ac43:97e3 and 2606:4700:3034::6815:11b.

Two other host names, along with microsoft-security.burnl33.workers.dev, www.forwardlabs.io and commercium-media.com, also share IP numbers with mail.dd3721.com.