mail.guochem.com - robtex.com

mail.guochem.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:38ce🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:88ac🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.56.206Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.136.172🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.56.206, 172.67.136.172
IPv62606:4700:3031::6815:38ce, 2606:4700:3032::ac43:88ac

guochem.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:38ce🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:88ac🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.56.206Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.136.172🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSnaomi.ns.cloudflare.com ⭐
NSoswald.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.56.206, 172.67.136.172
IPv62606:4700:3031::6815:38ce, 2606:4700:3032::ac43:88ac
SOAnaomi.ns.cloudflare.comdns@cloudflare.com serial=2398395010

Previously MX for

guochem.com

Same first word

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.56.206172.67.136.1722606:4700:3031::6815:38ce2606:4700:3032::ac43:88ac103.232.215.133
○A103.232.215.1332015-06-18 → 2015-06-18 · 3 obs
● 2015-06-18 02:11:42
○ 2015-11-05 09:54:26
○ 2026-03-28 07:14:02
●A104.21.56.2062026-03-28 → 2026-03-28 · 2 obs
○ 2015-11-05 09:54:26
● 2026-03-28 07:14:02
●A172.67.136.1722026-03-28 → 2026-03-28 · 2 obs
○ 2015-11-05 09:54:26
● 2026-03-28 07:14:02
●A2606:4700:3031::6815:38ce2026-03-28 → 2026-03-28 · 2 obs
○ 2015-11-05 09:54:26
● 2026-03-28 07:14:02
●A2606:4700:3032::ac43:88ac2026-03-28 → 2026-03-28 · 2 obs
○ 2015-11-05 09:54:26
● 2026-03-28 07:14:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, k.gtld-servers.net, d.gtld-servers.net, j.gtld-servers.net...-
guochem.comoswald.ns.cloudflare.com, naomi.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.208

NS records: oswald.ns.cloudflare.com, naomi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for guochem.com (unsigned zone)

⏱️ Timing

Total: 129ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.56.206, 172.67.136.172
AAAA22606:4700:3031::6815:38ce, 2606:4700:3032::ac43:88ac
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.guochem.com points to four IP numbers: 2606:4700:3031::6815:38ce, 2606:4700:3032::ac43:88ac, 104.21.56.206 and 172.67.136.172.

Other host names, for instance still-laser.fr, trangdiemphaidep.com, salesiq.com, chickenroad-official.sbs and uplook.com share IP numbers with mail.guochem.com.