rdtengineers.dk DNS records

🖥️ Nameservers2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
damian.ns.cloudflare.com	108.162.195.50 162.159.44.50 172.64.35.50 2606:4700:58::a29f:2c32 2803:f800:50::6ca2:c332 2a06:98c1:50::ac40:2332	damian.ns.cloudflare.com damian.ns.cloudflare.com damian.ns.cloudflare.com damian.ns.cloudflare.com damian.ns.cloudflare.com damian.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
marge.ns.cloudflare.com	108.162.192.191 172.64.32.191 173.245.58.191 2606:4700:50::adf5:3abf 2803:f800:50::6ca2:c0bf 2a06:98c1:50::ac40:20bf	marge.ns.cloudflare.com marge.ns.cloudflare.com marge.ns.cloudflare.com marge.ns.cloudflare.com marge.ns.cloudflare.com marge.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.29.252	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.150.24	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.29.252
🔶 Autoconfig	104.21.29.252

🔷 AAAA Records (IPv6)2 records 41ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:9618	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:1dfc	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 28ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.29.252,172.67.150.24 ech=AEX+DQBBWAAgACAssc7s9H4t/+Dmy389/1UaieZrjTduPdHd2vXhmNfbMAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:9618,2606:4700:3034::6815:1dfc

📝 TXT Records2 records 171ms

TXT Record
google-site-verification=0wspd4Z1eApuOFvLW5A0iRLy92uUkX8lZ-SGYVsqxAM
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (rdtengineers.dk)
-all (hard fail)	v=spf1 include:spf.simply.com -all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE2 records 64ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC112ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2408556685
Primary NS (MNAME)	damian.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

39ms

A

37ms

MX

35ms

AAAA

41ms

TXT

171ms

CAA

39ms

HTTPS

28ms

TLSA

64ms

SOA

0ms

MTA-STS

46ms

DNSSEC

112ms

SRV

79ms

Total

821ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-03 16:15:17	821ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-26 04:29:30	1022ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 11:04:20	1072ms	2 NS 2 A 1 MX	🔓 Insecure	View