smtp.kr40.com - robtex.com

smtp.kr40.com

DNSSEC⚠️ Not signed
A142.171.42.177🇺🇸 MULTA-ASN1142.171.0.0/17

kr40.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:9418🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:3779🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.55.121Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.148.24🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSathena.ns.cloudflare.com ⭐
NSmario.ns.cloudflare.com
MXsmtp.kr40.com ⭐
TXTv=spf1 a mx ip4:142.171.42.177 ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.55.121, 172.67.148.24
IPv6 hints2606:4700:3030::ac43:9418, 2606:4700:3035::6815:3779
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=230, name=cloudflare-ech.com
SOAathena.ns.cloudflare.comdns@cloudflare.com serial=2399848387

MX for

kr40.com

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DNS History

1 record (1 active, 0 former)

A142.171.42.177
●A142.171.42.1772026-04-12 → 2026-04-12 · 2 obs
● 2026-04-12 01:43:46
● 2026-04-12 15:31:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
kr40.comathena.ns.cloudflare.com, mario.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.72

NS records: athena.ns.cloudflare.com, mario.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kr40.com (unsigned zone)

⏱️ Timing

Total: 93ms | Queries: -

📄 Records

TypeCountSample Data
A1142.171.42.177

📌 Glue Records Collected

Total: 12

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

Analysis

Mail Server Role

smtp.kr40.com is the mail server for kr40.com.

IP Addresses

smtp.kr40.com points to a single IP number: 142.171.42.177.