dcu-kreds2.dk DNS records

🖥️ Nameservers2 records 72ms

Nameserver	IP addresses	PTR	ASN / ISP
carl.ns.cloudflare.com	108.162.193.106 172.64.33.106 173.245.59.106 2606:4700:58::adf5:3b6a 2803:f800:50::6ca2:c16a 2a06:98c1:50::ac40:216a	carl.ns.cloudflare.com carl.ns.cloudflare.com carl.ns.cloudflare.com carl.ns.cloudflare.com carl.ns.cloudflare.com carl.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
elisabeth.ns.cloudflare.com	108.162.194.224 162.159.38.224 172.64.34.224 2606:4700:50::a29f:26e0 2803:f800:50::6ca2:c2e0 2a06:98c1:50::ac40:22e0	elisabeth.ns.cloudflare.com elisabeth.ns.cloudflare.com elisabeth.ns.cloudflare.com elisabeth.ns.cloudflare.com elisabeth.ns.cloudflare.com elisabeth.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.75.248	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.184.15	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 79ms

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	172.67.184.15
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)2 records 61ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::ac43:b80f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:4bf8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 64ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.75.248,172.67.184.15 ech=AEX+DQBBpAAgACANEvMQAXgBwVfzuGUlBKfZaE68CiirdMGu1orPSr7aVQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:b80f,2606:4700:3035::6815:4bf8

🔌 SRV Records1 records 136ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records1 records 324ms

TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (dcu-kreds2.dk)
-all (hard fail)	v=spf1 include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.dcu-kreds2.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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 92ms

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

🔐 DNSSEC105ms

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	2412485757
Primary NS (MNAME)	carl.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

72ms

A

41ms

MX

79ms

AAAA

61ms

TXT

324ms

CAA

63ms

HTTPS

64ms

TLSA

92ms

SOA

0ms

MTA-STS

93ms

DNSSEC

105ms

SRV

136ms

Total

1044ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 09:05:12	1044ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-19 00:21:50	4102ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-08 20:30:53	8874ms	2 NS 2 A 1 MX	❓ Unknown	View
2026-07-24 04:14:27	851ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 01:21:44	323ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 01:21:15	580ms	3 NS 1 A 1 MX	🔒 Secure	View