mail.smtp13.com - robtex.com

mail.smtp13.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:8149🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:28c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.2.140Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.129.73🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.2.140, 172.67.129.73
IPv62606:4700:3032::ac43:8149, 2606:4700:3037::6815:28c

smtp13.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:8149🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:28c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.2.140Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.129.73🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSamy.ns.cloudflare.com ⭐
NSjim.ns.cloudflare.com
MX_dc-mx.af2e81a24dee.smtp13.com ⭐
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.2.140, 172.67.129.73
IPv62606:4700:3032::ac43:8149, 2606:4700:3037::6815:28c
SOAamy.ns.cloudflare.comdns@cloudflare.com serial=2398535878

Previously MX for

smtp13.com

Same first word

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.2.140172.67.129.732606:4700:3032::ac43:81492606:4700:3037::6815:28c205.207.123.170
●A104.21.2.1402026-02-15 → 2026-03-26 · 3 obs
○ 2016-03-09 07:41:12
● 2026-02-15 14:29:48
● 2026-03-26 07:03:04
●A172.67.129.732026-02-15 → 2026-03-26 · 3 obs
○ 2016-03-09 07:41:12
● 2026-02-15 14:29:48
● 2026-03-26 07:03:04
○A205.207.123.1702015-07-02 → 2016-03-09 · 4 obs
● 2015-07-02 23:53:44
● 2016-03-09 07:41:12
○ 2026-02-15 14:29:48
○ 2026-03-26 07:03:04
●A2606:4700:3032::ac43:81492026-02-15 → 2026-03-26 · 3 obs
○ 2016-03-09 07:41:12
● 2026-02-15 14:29:48
● 2026-03-26 07:03:04
●A2606:4700:3037::6815:28c2026-02-15 → 2026-03-26 · 3 obs
○ 2016-03-09 07:41:12
● 2026-02-15 14:29:48
● 2026-03-26 07:03:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
smtp13.comamy.ns.cloudflare.com, jim.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.125

NS records: amy.ns.cloudflare.com, jim.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for smtp13.com (unsigned zone)

⏱️ Timing

Total: 107ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.129.73, 104.21.2.140
AAAA22606:4700:3032::ac43:8149, 2606:4700:3037::6815:28c
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.smtp13.com maps to four IP numbers: 2606:4700:3032::ac43:8149, 2606:4700:3037::6815:28c, 104.21.2.140 and 172.67.129.73.

Other host names such as tropicalrawson.com, arhsharbinger.com, personalitypage.com.cdn.cloudflare.net, z888u.com and erem.ro share IPs with mail.smtp13.com.