doktortjek.dk DNS records

🖥️ Nameservers2 records 47ms

Nameserver	IP addresses	PTR	ASN / ISP
cory.ns.cloudflare.com	108.162.193.93 172.64.33.93 173.245.59.93 2606:4700:58::adf5:3b5d 2803:f800:50::6ca2:c15d 2a06:98c1:50::ac40:215d	cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
rosa.ns.cloudflare.com	108.162.192.228 172.64.32.228 173.245.58.228 2606:4700:50::adf5:3ae4 2803:f800:50::6ca2:c0e4 2a06:98c1:50::ac40:20e4	rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 49ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.8.30	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.156.186	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.mikrosec.net	93.167.225.233	mail.mikrosec.net	AS3292 TDC Holding A/S

🔷 AAAA Records (IPv6)2 records 49ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:81e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:9cba	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 57ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.8.30,172.67.156.186 ech=AEX+DQBBOAAgACACu6z+tYlNEn+wKDk/uzhGc5lAyIsqWJhR583j7e+BfgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:81e,2606:4700:3036::ac43:9cba

📝 TXT Records1 records 220ms

TXT Record
v=spf1 a ip4:93.167.225.233 mx:mail.mikrosec.net -all

✉️ SPF

Policy	Record (doktortjek.dk)
-all (hard fail)	v=spf1 a ip4:93.167.225.233 mx:mail.mikrosec.net -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 / DANE

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

🔐 DNSSEC94ms

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

🏷️ SOA0ms

Field	Value
Serial	2413255907
Primary NS (MNAME)	cory.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

47ms

A

49ms

MX

38ms

AAAA

49ms

TXT

220ms

CAA

56ms

HTTPS

57ms

TLSA

89ms

SOA

0ms

MTA-STS

78ms

DNSSEC

94ms

SRV

82ms

Total

733ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 03:30:04	733ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-09 14:49:42	1590ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-01 00:58:51	917ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-11 03:32:48	949ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-26 03:57:01	1093ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-21 22:56:38	1140ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 18:08:40	1211ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-17 04:05:30	478ms	2 NS 2 A 1 MX	🔒 Secure	View