mail.sem-s.com - robtex.com

mail.sem-s.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:2117🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:8c38🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.33.23Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.140.56🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.33.23, 172.67.140.56
IPv6 hints2606:4700:3033::6815:2117, 2606:4700:3033::ac43:8c38
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=181, name=cloudflare-ech.com

sem-s.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:2117🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:8c38🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.33.23Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.140.56🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSchelsea.ns.cloudflare.com ⭐
NSkaiser.ns.cloudflare.com
MX_dc-mx.48edcfee38d9.sem-s.com ⭐
TXTv=spf1 mx include:spf.w4ymail.at -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.33.23, 172.67.140.56
IPv6 hints2606:4700:3033::6815:2117, 2606:4700:3033::ac43:8c38
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=181, name=cloudflare-ech.com
SOAchelsea.ns.cloudflare.comdns@cloudflare.com serial=2410100159

Previously MX for

sem-s.com

Same first word

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.33.23172.67.140.562606:4700:3033::6815:21172606:4700:3033::ac43:8c38153.122.45.124
●A104.21.33.232026-07-22 → 2026-07-22 · 2 obs
○ 2016-07-13 02:18:40
● 2026-07-22 04:15:36
○A153.122.45.1242015-05-17 → 2016-03-12 · 4 obs
● 2015-05-17 14:33:18
● 2016-03-12 13:24:08
○ 2016-07-13 02:18:40
○ 2026-07-22 04:15:36
●A172.67.140.562026-07-22 → 2026-07-22 · 2 obs
○ 2016-07-13 02:18:40
● 2026-07-22 04:15:36
●A2606:4700:3033::6815:21172026-07-22 → 2026-07-22 · 2 obs
○ 2016-07-13 02:18:40
● 2026-07-22 04:15:36
●A2606:4700:3033::ac43:8c382026-07-22 → 2026-07-22 · 2 obs
○ 2016-07-13 02:18:40
● 2026-07-22 04:15:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net...-
sem-s.comchelsea.ns.cloudflare.com, kaiser.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.177

NS records: chelsea.ns.cloudflare.com, kaiser.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sem-s.com (unsigned zone)

⏱️ Timing

Total: 202ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.33.23, 172.67.140.56
AAAA22606:4700:3033::6815:2117, 2606:4700:3033::ac43:8c38
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.sem-s.com resolves to four IP addresses: 104.21.33.23, 172.67.140.56, 2606:4700:3033::6815:2117 and 2606:4700:3033::ac43:8c38.

Among the host names that share IP numbers with mail.sem-s.com are jl-style.co, leadnepal.com, summitbettingbase.com and two others.