ctr.dk DNS records

🖥️ Nameservers4 records 22ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
95.216.30.5	3600s	static.5.30.216.95.clients.your-server.de	AS24940	Hetzner Online GmbH	95.216.0.0/15	🇫🇮 Finland	Helsinki

📧 MX Records2 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	3600s	mx-01-eu-central-1.prod.hydra.sophos.com	18.156.148.254 3.69.102.49	ec2-18-156-148-254.eu-central-1.compute.amazonaws.com ec2-3-69-102-49.eu-central-1.compute.amazonaws.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
5	3600s	mx-02-eu-central-1.prod.hydra.sophos.com	18.156.148.254 3.69.102.49	ec2-18-156-148-254.eu-central-1.compute.amazonaws.com ec2-3-69-102-49.eu-central-1.compute.amazonaws.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	95.216.30.5
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 41ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	10	1	5061	sipfed.online.lync.com

📝 TXT Records10 records 193ms

TXT Record
_globalsign-domain-verification=Bhl856-TcWoxhbk0nWuJixzmtCC7lRpDSXMN5h9jtm
_globalsign-domain-verification=GUX2Zb15jYC-7SL7cC7B4GxejuWWwhnXcaAPyjeWF9
_globalsign-domain-verification=lxYbTg25j7lTden6wWrE5B5_81yme-KEfFx7VOdxWs
ca3-a90ec8369ba64233b3897eca31c6d8c3
MS=ms25143600
MS=ms74080844
sophos-domain-verification=088ae3a66a5488e3bf88b477a57fdbaf9a1d87ec
sophos-domain-verification=573d397b1856d457ae8095567160ecc8b04f90feb0547c492b6facfb50be552a
sophos-domain-verification=8f2ad12d3d61a8727dc38c5ce8f543a40e334ca7
v=spf1 include:_spf.sndr.no include:_spf15860.spfprotect.com -all

✉️ SPF

Policy	Record (ctr.dk)
-all (hard fail)	v=spf1 include:_spf.sndr.no include:_spf15860.spfprotect.com -all

📨 DMARC

Policy	Record (_dmarc.ctr.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:63da69c0507f6@dmarc.centerasecurity.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.ctr.dk	ctr-dk.acme.cnxa.cloud

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC97ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2026083001
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

22ms

A

30ms

MX

25ms

AAAA

23ms

TXT

193ms

CAA

22ms

HTTPS

23ms

TLSA

121ms

SOA

0ms

MTA-STS

34ms

DNSSEC

97ms

SRV

41ms

Total

709ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 12:19:23	709ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-27 13:27:33	851ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-25 16:08:45	920ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-24 14:25:33	1232ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-23 04:54:06	6213ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-21 04:22:55	9924ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-20 03:50:51	16839ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-17 23:57:26	1360ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-08-15 13:17:43	1265ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-07-03 14:04:13	960ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 19:15:25	738ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-06-21 04:48:10	929ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-06-19 23:51:47	772ms	4 NS 1 A 2 MX	🔒 Secure	View
2026-06-16 23:11:43	671ms	4 NS 1 A 2 MX	🔒 Secure	View