smtp.naturalgren.com - robtex.com

smtp.naturalgren.com

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:1117🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:db9b🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.17.23Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.219.155🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.17.23, 172.67.219.155
IPv6 hints2606:4700:3032::6815:1117, 2606:4700:3032::ac43:db9b
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=140, name=cloudflare-ech.com

naturalgren.com

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:1117🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:db9b🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.17.23Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.219.155🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSnena.ns.cloudflare.com ⭐
NSsri.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.17.23, 172.67.219.155
IPv6 hints2606:4700:3032::6815:1117, 2606:4700:3032::ac43:db9b
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=140, name=cloudflare-ech.com
SOAnena.ns.cloudflare.comdns@cloudflare.com serial=2410608274

Previously MX for

naturalgren.com

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.17.23172.67.219.1552606:4700:3032::6815:11172606:4700:3032::ac43:db9b173.10.111.241
●A104.21.17.232026-07-09 → 2026-08-14 · 3 obs
○ 2016-04-21 20:21:14
● 2026-07-09 07:30:54
● 2026-08-14 04:28:56
●A172.67.219.1552026-07-09 → 2026-08-14 · 3 obs
○ 2016-04-21 20:21:14
● 2026-07-09 07:30:54
● 2026-08-14 04:28:56
○A173.10.111.2412015-07-11 → 2016-04-21 · 4 obs
● 2015-07-11 02:12:16
● 2016-04-21 20:21:14
○ 2026-07-09 07:30:54
○ 2026-08-14 04:28:56
●A2606:4700:3032::6815:11172026-07-09 → 2026-08-14 · 3 obs
○ 2016-04-21 20:21:14
● 2026-07-09 07:30:54
● 2026-08-14 04:28:56
●A2606:4700:3032::ac43:db9b2026-07-09 → 2026-08-14 · 3 obs
○ 2016-04-21 20:21:14
● 2026-07-09 07:30:54
● 2026-08-14 04:28:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
naturalgren.comsri.ns.cloudflare.com, nena.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.161

NS records: sri.ns.cloudflare.com, nena.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for naturalgren.com (unsigned zone)

⏱️ Timing

Total: 107ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.219.155, 104.21.17.23
AAAA22606:4700:3032::ac43:db9b, 2606:4700:3032::6815:1117
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

smtp.naturalgren.com has four IP addresses: 104.21.17.23, 172.67.219.155, 2606:4700:3032::6815:1117 and 2606:4700:3032::ac43:db9b.

Among the host names that share IP numbers with smtp.naturalgren.com are lessons.cjols.dev, cdn.minetheasic.com, cgf.bet10tv.sbs and two others.