mail.cobalttx.com - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

mail.cobalttx.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:b394🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:23d1🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.35.209Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.179.148🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.35.209, 172.67.179.148
IPv6 hints2606:4700:3032::ac43:b394, 2606:4700:3036::6815:23d1
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=111, name=cloudflare-ech.com

cobalttx.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:b394🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:23d1🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.35.209Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.179.148🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSkobe.ns.cloudflare.com ⭐
NSmay.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.35.209, 172.67.179.148
IPv6 hints2606:4700:3032::ac43:b394, 2606:4700:3036::6815:23d1
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=111, name=cloudflare-ech.com
SOAkobe.ns.cloudflare.comdns@cloudflare.com serial=2410554498

Previously MX for

cobalttx.com

Same first word

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DNS History

8 records (4 active, 4 former)

20162017201820192020202120222023202420252026A104.21.35.209172.67.179.1482606:4700:3032::ac43:b3942606:4700:3036::6815:23d12606:4700:3034::6815:23d12606:4700:3037::ac43:b39467.20.76.12974.220.215.242
●A104.21.35.2092026-04-23 → 2026-08-16 · 3 obs
○ 2016-06-23 17:32:30
● 2026-04-23 11:54:26
● 2026-08-16 22:59:48
●A172.67.179.1482026-04-23 → 2026-08-16 · 3 obs
○ 2016-06-23 17:32:30
● 2026-04-23 11:54:26
● 2026-08-16 22:59:48
●A2606:4700:3032::ac43:b3942026-06-22 → 2026-08-16 · 3 obs
○ 2026-04-23 11:54:26
● 2026-06-22 05:12:32
● 2026-08-16 22:59:48
○A2606:4700:3034::6815:23d12026-04-23 → 2026-04-23 · 4 obs
○ 2016-06-23 17:32:30
● 2026-04-23 11:54:26
○ 2026-06-22 05:12:32
○ 2026-08-16 22:59:48
●A2606:4700:3036::6815:23d12026-06-22 → 2026-08-16 · 3 obs
○ 2026-04-23 11:54:26
● 2026-06-22 05:12:32
● 2026-08-16 22:59:48
○A2606:4700:3037::ac43:b3942026-04-23 → 2026-04-23 · 4 obs
○ 2016-06-23 17:32:30
● 2026-04-23 11:54:26
○ 2026-06-22 05:12:32
○ 2026-08-16 22:59:48
○A67.20.76.1292015-11-11 → 2016-06-23 · 5 obs
○ 2015-06-22 18:58:28
● 2015-11-11 02:10:44
● 2016-06-23 17:32:30
○ 2026-04-23 11:54:26
○ 2026-08-16 22:59:48
○A74.220.215.2422015-06-22 → 2015-06-22 · 3 obs
● 2015-06-22 18:58:28
○ 2015-11-11 02:10:44
○ 2026-08-16 22:59:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
cobalttx.comkobe.ns.cloudflare.com, may.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.193

NS records: kobe.ns.cloudflare.com, may.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cobalttx.com (unsigned zone)

⏱️ Timing

Total: 2149ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.179.148, 104.21.35.209
AAAA22606:4700:3032::ac43:b394, 2606:4700:3036::6815:23d1
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.cobalttx.com directs to four IP numbers, which are 104.21.35.209, 172.67.179.148, 2606:4700:3032::ac43:b394 and 2606:4700:3036::6815:23d1.

Additional host names — priscillaignacio.com.br, ductlesssplitsystem.com, hoaphatidc.com and two others — share IP numbers with mail.cobalttx.com.