mail.lfcursos.com - robtex.com

mail.lfcursos.com

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:1566🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:c5f0🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.21.102Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.197.240🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.21.102, 172.67.197.240
IPv6 hints2606:4700:3032::6815:1566, 2606:4700:3033::ac43:c5f0
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=37, name=cloudflare-ech.com

lfcursos.com

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:1566🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:c5f0🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.21.102Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.197.240🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NShenry.ns.cloudflare.com ⭐
NSshaz.ns.cloudflare.com
MXmx10.antispam.mailspamprotection.com ⭐
MXmx10.mailspamprotection.com ⭐
MXmx20.antispam.mailspamprotection.com(20)
MXmx20.mailspamprotection.com(20)
MXmx30.antispam.mailspamprotection.com(30)
MXmx30.mailspamprotection.com(30)
TXTv=spf1 +a +mx +ip4:173.254.28.69 ?all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.21.102, 172.67.197.240
IPv6 hints2606:4700:3032::6815:1566, 2606:4700:3033::ac43:c5f0
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=37, name=cloudflare-ech.com
SOAhenry.ns.cloudflare.comdns@cloudflare.com serial=2407627362

Previously MX for

lfcursos.com

Same first word

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DNS History

7 records (4 active, 3 former)

20162017201820192020202120222023202420252026A104.21.21.102172.67.197.2402606:4700:3032::6815:15662606:4700:3033::ac43:c5f0173.254.28.692606:4700:3034::ac43:c5f02606:4700:3035::6815:1566
●A104.21.21.1022026-05-26 → 2026-07-25 · 3 obs
○ 2016-06-29 23:01:10
● 2026-05-26 19:32:58
● 2026-07-25 19:39:48
●A172.67.197.2402026-05-26 → 2026-07-25 · 3 obs
○ 2016-06-29 23:01:10
● 2026-05-26 19:32:58
● 2026-07-25 19:39:48
○A173.254.28.692015-07-20 → 2016-06-29 · 4 obs
● 2015-07-20 17:56:34
● 2016-06-29 23:01:10
○ 2026-05-26 19:32:58
○ 2026-07-25 19:39:48
●A2606:4700:3032::6815:15662026-07-25 → 2026-07-25 · 2 obs
○ 2026-06-17 11:13:36
● 2026-07-25 19:39:48
●A2606:4700:3033::ac43:c5f02026-07-25 → 2026-07-25 · 2 obs
○ 2026-06-17 11:13:36
● 2026-07-25 19:39:48
○A2606:4700:3034::ac43:c5f02026-05-26 → 2026-06-17 · 4 obs
○ 2016-06-29 23:01:10
● 2026-05-26 19:32:58
● 2026-06-17 11:13:36
○ 2026-07-25 19:39:48
○A2606:4700:3035::6815:15662026-05-26 → 2026-06-17 · 4 obs
○ 2016-06-29 23:01:10
● 2026-05-26 19:32:58
● 2026-06-17 11:13:36
○ 2026-07-25 19:39:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net...-
lfcursos.comhenry.ns.cloudflare.com, shaz.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.249

NS records: henry.ns.cloudflare.com, shaz.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lfcursos.com (unsigned zone)

⏱️ Timing

Total: 179ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.197.240, 104.21.21.102
AAAA22606:4700:3032::6815:1566, 2606:4700:3033::ac43:c5f0
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.lfcursos.com directs to four IP numbers, which are 104.21.21.102, 172.67.197.240, 2606:4700:3032::6815:1566 and 2606:4700:3033::ac43:c5f0.

Among the host names that share IP numbers with mail.lfcursos.com are tymanthius.net, www.winningslotstips.net, cin.one and two others.