mail.fourbusinesmk.com - robtex.com

mail.fourbusinesmk.com

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:a523🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:b2b🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.11.43Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.165.35🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.11.43, 172.67.165.35
IPv6 hints2606:4700:3031::ac43:a523, 2606:4700:3035::6815:b2b
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=76, name=cloudflare-ech.com

fourbusinesmk.com

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:a523🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:b2b🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.11.43Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.165.35🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScolette.ns.cloudflare.com ⭐
NSpranab.ns.cloudflare.com
MX_dc-mx.3d97edc53af5.fourbusinesmk.com ⭐
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.11.43, 172.67.165.35
IPv6 hints2606:4700:3031::ac43:a523, 2606:4700:3035::6815:b2b
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=76, name=cloudflare-ech.com
SOAcolette.ns.cloudflare.comdns@cloudflare.com serial=2402852824
📈 Tranco rank: #910,613

Previously MX for

fourbusinesmk.com

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DNS History

5 records (4 active, 1 former)

A104.21.11.43172.67.165.352606:4700:3031::ac43:a5232606:4700:3035::6815:b2b94.154.35.212
●A104.21.11.432026-05-11 → 2026-05-11 · 2 obs
○ 2026-04-15 09:30:56
● 2026-05-11 00:56:08
●A172.67.165.352026-05-11 → 2026-05-11 · 2 obs
○ 2026-04-15 09:30:56
● 2026-05-11 00:56:08
●A2606:4700:3031::ac43:a5232026-05-11 → 2026-05-11 · 2 obs
○ 2026-04-15 09:30:56
● 2026-05-11 00:56:08
●A2606:4700:3035::6815:b2b2026-05-11 → 2026-05-11 · 2 obs
○ 2026-04-15 09:30:56
● 2026-05-11 00:56:08
○A94.154.35.2122026-04-09 → 2026-04-09 · 3 obs
● 2026-04-09 09:54:18
○ 2026-04-15 09:30:56
○ 2026-05-11 00:56:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
fourbusinesmk.comcolette.ns.cloudflare.com, pranab.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.28

NS records: colette.ns.cloudflare.com, pranab.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fourbusinesmk.com (unsigned zone)

⏱️ Timing

Total: 219ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.11.43, 172.67.165.35
AAAA22606:4700:3031::ac43:a523, 2606:4700:3035::6815:b2b
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.fourbusinesmk.com points to four IP numbers: 2606:4700:3031::ac43:a523, 2606:4700:3035::6815:b2b, 104.21.11.43 and 172.67.165.35.

Other host names, for instance www.thenewsrep.com, safeharborvale.co.uk, dark-comet.com, silvanuonvia.com and edddh4.com share IP numbers with mail.fourbusinesmk.com.