mail.contextmx.com - robtex.com

mail.contextmx.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:8f36🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:272f🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.39.47Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.143.54🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.39.47, 172.67.143.54
IPv6 hints2606:4700:3033::ac43:8f36, 2606:4700:3037::6815:272f
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=168, name=cloudflare-ech.com

contextmx.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:8f36🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:272f🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.39.47Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.143.54🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSishaan.ns.cloudflare.com ⭐
NSwalk.ns.cloudflare.com
MXcontextmx-com.mail.protection.outlook.com ⭐
TXTNETORGFT20167755.onmicrosoft.com
TXTv=spf1 include:secureserver.net -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.39.47, 172.67.143.54
IPv6 hints2606:4700:3033::ac43:8f36, 2606:4700:3037::6815:272f
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=168, name=cloudflare-ech.com
SOAishaan.ns.cloudflare.comdns@cloudflare.com serial=2401268194

Previously MX for

contextmx.com

Same first word

mail.ciao.jp
mail.gov.vc
mail.realm.cz
mail.vu
mail.trading
mail.center
mail.fi
mail.kg
mail.mayfirst.org
mail.systems
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mail.awsapps.com
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mail.virtualuser.de
mail.charity
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mail.ap.gov.br
mail.dp.ua
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mail.space
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mail.read-books.org
mail.ilovecollege.info
mail.gmx
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mail.community
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mail.hashbang.sh
mail.mil.ru
mail.schwarz
mail.co.uk
mail.net.mk
mail.rj.gov.br
mail.freedesktop.org
mail.direct
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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.39.47172.67.143.542606:4700:3033::ac43:8f362606:4700:3037::6815:272f27.54.87.157
●A104.21.39.472026-04-11 → 2026-04-11 · 2 obs
○ 2016-06-18 08:36:50
● 2026-04-11 18:47:14
●A172.67.143.542026-04-11 → 2026-04-11 · 2 obs
○ 2016-06-18 08:36:50
● 2026-04-11 18:47:14
●A2606:4700:3033::ac43:8f362026-04-11 → 2026-04-11 · 2 obs
○ 2016-06-18 08:36:50
● 2026-04-11 18:47:14
●A2606:4700:3037::6815:272f2026-04-11 → 2026-04-11 · 2 obs
○ 2016-06-18 08:36:50
● 2026-04-11 18:47:14
○A27.54.87.1572015-07-05 → 2016-06-18 · 3 obs
● 2015-07-05 21:30:16
● 2016-06-18 08:36:50
○ 2026-04-11 18:47:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, i.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net...-
contextmx.comwalk.ns.cloudflare.com, ishaan.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.128

NS records: walk.ns.cloudflare.com, ishaan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contextmx.com (unsigned zone)

⏱️ Timing

Total: 118ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.39.47, 172.67.143.54
AAAA22606:4700:3037::6815:272f, 2606:4700:3033::ac43:8f36
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.contextmx.com resolves to four IP numbers: 2606:4700:3033::ac43:8f36, 2606:4700:3037::6815:272f, 104.21.39.47 and 172.67.143.54.

Other host names such as www.qhdcpt.com, platformsphere.buzz, balansierontica.my, innovacionnet.com and mail.pikirpikir.com share IPs with mail.contextmx.com.