mail.coobtec.com - robtex.com

mail.coobtec.com

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:29a5🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:bfb8🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.41.165Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.191.184🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.41.165, 172.67.191.184
IPv6 hints2606:4700:3030::6815:29a5, 2606:4700:3036::ac43:bfb8
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=214, name=cloudflare-ech.com

coobtec.com

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:29a5🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:bfb8🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.41.165Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.191.184🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgraham.ns.cloudflare.com ⭐
NSmimi.ns.cloudflare.com
MX_dc-mx.53cf89409d5d.coobtec.com ⭐
TXTv=spf1 include:_spf.greenmxpost.net ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.41.165, 172.67.191.184
IPv6 hints2606:4700:3030::6815:29a5, 2606:4700:3036::ac43:bfb8
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=214, name=cloudflare-ech.com
SOAgraham.ns.cloudflare.comdns@cloudflare.com serial=2398018663

Previously MX for

coobtec.com

Same first word

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.41.165172.67.191.1842606:4700:3030::6815:29a52606:4700:3036::ac43:bfb8194.9.94.72
●A104.21.41.1652026-04-19 → 2026-04-19 · 2 obs
○ 2016-03-14 20:35:24
● 2026-04-19 23:58:32
●A172.67.191.1842026-04-19 → 2026-04-19 · 2 obs
○ 2016-03-14 20:35:24
● 2026-04-19 23:58:32
○A194.9.94.722015-07-26 → 2016-03-14 · 3 obs
● 2015-07-26 02:46:04
● 2016-03-14 20:35:24
○ 2026-04-19 23:58:32
●A2606:4700:3030::6815:29a52026-04-19 → 2026-04-19 · 2 obs
○ 2016-03-14 20:35:24
● 2026-04-19 23:58:32
●A2606:4700:3036::ac43:bfb82026-04-19 → 2026-04-19 · 2 obs
○ 2016-03-14 20:35:24
● 2026-04-19 23:58:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net, j.gtld-servers.net...-
coobtec.comgraham.ns.cloudflare.com, mimi.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.171

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coobtec.com (unsigned zone)

⏱️ Timing

Total: 398ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.191.184, 104.21.41.165
AAAA22606:4700:3030::6815:29a5, 2606:4700:3036::ac43:bfb8
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.coobtec.com maps to four IP numbers: 2606:4700:3030::6815:29a5, 2606:4700:3036::ac43:bfb8, 104.21.41.165 and 172.67.191.184.

other host names include smtp.premiermounts.com, tobggu.xyz, theherriotts.com, smmaacademy.co.kr and baronen.nu; they share IP numbers with mail.coobtec.com.