mail.emcourse.com - robtex.com

mail.emcourse.com

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:4096🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:9820🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.64.150Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.152.32🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.64.150, 172.67.152.32
IPv6 hints2606:4700:3032::6815:4096, 2606:4700:3037::ac43:9820
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=33, name=cloudflare-ech.com

emcourse.com

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:4096🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:9820🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.64.150Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.152.32🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSchance.ns.cloudflare.com ⭐
NSmaeve.ns.cloudflare.com
MX_dc-mx.372fbbda7511.emcourse.com ⭐
TXTfacebook-domain-verification=jtk5xb7r5wiq7nmpr3szma0p3mqij6
TXTv=spf1 +mx +a +ip4:200.225.41.128 ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.64.150, 172.67.152.32
IPv6 hints2606:4700:3032::6815:4096, 2606:4700:3037::ac43:9820
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=33, name=cloudflare-ech.com
SOAchance.ns.cloudflare.comdns@cloudflare.com serial=2399602106

Previously MX for

emcourse.com

Same first word

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DNS History

5 records (4 active, 1 former)

2017201820192020202120222023202420252026A104.21.64.150172.67.152.322606:4700:3032::6815:40962606:4700:3037::ac43:982098.158.129.36
●A104.21.64.1502026-02-24 → 2026-05-10 · 3 obs
○ 2016-05-06 13:25:32
● 2026-02-24 10:24:16
● 2026-05-10 15:04:58
●A172.67.152.322026-02-24 → 2026-05-10 · 3 obs
○ 2016-05-06 13:25:32
● 2026-02-24 10:24:16
● 2026-05-10 15:04:58
●A2606:4700:3032::6815:40962026-02-24 → 2026-05-10 · 3 obs
○ 2016-05-06 13:25:32
● 2026-02-24 10:24:16
● 2026-05-10 15:04:58
●A2606:4700:3037::ac43:98202026-02-24 → 2026-05-10 · 3 obs
○ 2016-05-06 13:25:32
● 2026-02-24 10:24:16
● 2026-05-10 15:04:58
○A98.158.129.362016-05-06 → 2016-05-06 · 3 obs
● 2016-05-06 13:25:32
○ 2026-02-24 10:24:16
○ 2026-05-10 15:04:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
emcourse.commaeve.ns.cloudflare.com, chance.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.33

NS records: maeve.ns.cloudflare.com, chance.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for emcourse.com (unsigned zone)

⏱️ Timing

Total: 200ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.152.32, 104.21.64.150
AAAA22606:4700:3037::ac43:9820, 2606:4700:3032::6815:4096
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.emcourse.com resolves to four IP numbers: 2606:4700:3032::6815:4096, 2606:4700:3037::ac43:9820, 104.21.64.150 and 172.67.152.32.

other host names for instance carcillojersey.cabanova.com, mdicaidms.cabanova.com, amukulitasomething.cabanova.com, ctpaindore.com and metaslimindia.cabanova.com share IP numbers with mail.emcourse.com.