doktor-tjek.dk

📜 Historical scan 2026-09-17 08:49:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

doktor-tjek.dk is a .dk domain served by 2 nameservers (cory.ns.cloudflare.com, rosa.ns.cloudflare.com). It was registered on 1 September 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.70.117 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.mikrosec.net. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 44ms

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 Records#

2 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.70.117	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.223.97	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 33ms

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 36ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:4675	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:df61	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 43ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.70.117,172.67.223.97 ech=AEX+DQBBXwAgACBcbir9Pm/E5c/FamG+w3ft5hWJnDp6KsVn9mkK/jvYdwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:4675,2606:4700:3034::ac43:df61

📝 TXT Records#

1 records 199ms

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

✉️ SPF#

Policy	Record (doktor-tjek.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-14 00:51:04

www	104.21.70.117 172.67.223.97 2606:4700:3030::6815:4675 2606:4700:3034::ac43:df61 (AS13335) (address records, no CNAME)
www vs bare domain	Same network doktor-tjek.dk: 104.21.70.117 172.67.223.97 2606:4700:3030::6815:4675 2606:4700:3034::ac43:df61 (AS13335) www.doktor-tjek.dk: 104.21.70.117 172.67.223.97 2606:4700:3030::6815:4675 2606:4700:3034::ac43:df61 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.doktor-tjek.dk	9HUqkmeSvOahnY5VNIJuyXsCy1R02HC9DLOZeckG75g
TXT	_acme-challenge.doktor-tjek.dk	qXuLpZraEzQRi_vcSjLD0Px5VlNJRsaQi2-Qnt0gkR4
TXT	_acme-challenge.doktor-tjek.dk	tUwQE5s3q--OoIvuxfOCiqAMH-GZMZKPZOYcmkFJM-M
TXT	_acme-challenge.doktor-tjek.dk	wKjRUHzSNvjDow1VAIYw_CWSpjcnsSHVq9x7sUKvd5s

🔗 TLSA / DANE#

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

🔐 DNSSEC#

122ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415050733
Primary NS (MNAME)	cory.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 01:05:06

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2010-09-01
Expires	2027-09-30 (341d)

🔗 Same registrant#

60 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
amager-laaseservice.dk	Punktum dk A/S (direct)
amager-låseservice.dk	Punktum dk A/S (direct)
aviser-online.dk	Punktum dk A/S (direct)
billig-laase.dk	Punktum dk A/S (direct)
billig-låse.dk	Punktum dk A/S (direct)
billig-sikring.dk	Punktum dk A/S (direct)
billige-laase.dk	Punktum dk A/S (direct)
billige-låse.dk	Punktum dk A/S (direct)
billigelåse.dk	Punktum dk A/S (direct)
billiglaase.dk	Punktum dk A/S (direct)
bilsyn-amager.dk	Punktum dk A/S (direct)
bilsyn-københavn.dk	Punktum dk A/S (direct)
bilsynamager.dk	Punktum dk A/S (direct)
byttezonen.dk	Punktum dk A/S (direct)
construction.dk	Punktum dk A/S (direct)
copenhagenlocksmith.dk	Punktum dk A/S (direct)
doktortjek.dk	Punktum dk A/S (direct)
iconstruct.dk	Punktum dk A/S (direct)
jetbåd.dk	Punktum dk A/S (direct)
laasesmed-amager.dk	Punktum dk A/S (direct)
laasesmed-birkeroed.dk	Punktum dk A/S (direct)
laasesmed-farum.dk	Punktum dk A/S (direct)
laasesmed-frederiksberg.dk	Punktum dk A/S (direct)
laasesmed-furesoe.dk	Punktum dk A/S (direct)
laasesmed-kobenhavn-laasesmed.dk	Punktum dk A/S (direct)
laasesmed-laasesmed.dk	Punktum dk A/S (direct)
laasesmed-oesterbrogade.dk	Punktum dk A/S (direct)
laasesmed-roskilde.dk	Punktum dk A/S (direct)
laasesmed-valby.dk	Punktum dk A/S (direct)
laasesmed-østerbro.dk	Punktum dk A/S (direct)
legetøjs-shoppen.dk	Punktum dk A/S (direct)
livequiz.dk	Punktum dk A/S (direct)
låsesmed-albertslund.dk	Punktum dk A/S (direct)
låsesmed-birkerød.dk	Punktum dk A/S (direct)
låsesmed-brønshøj.dk	Punktum dk A/S (direct)
låsesmed-charlottenlund.dk	Punktum dk A/S (direct)
låsesmed-døgnvagten.dk	Punktum dk A/S (direct)
låsesmed-farum.dk	Punktum dk A/S (direct)
låsesmed-gentofte.dk	Punktum dk A/S (direct)
låsesmed-gladsaxe.dk	Punktum dk A/S (direct)
låsesmed-glostrup.dk	Punktum dk A/S (direct)
låsesmed-hillerød.dk	Punktum dk A/S (direct)
låsesmed-holte.dk	Punktum dk A/S (direct)
låsesmed-hørsholm.dk	Punktum dk A/S (direct)
låsesmed-københavn-låseservice.dk	Punktum dk A/S (direct)
låsesmed-låsesmed-københavn.dk	Punktum dk A/S (direct)
låsesmed-låsesmed.dk	Punktum dk A/S (direct)
låsesmed-nørrebro-låsesmed.dk	Punktum dk A/S (direct)
låsesmed-oplukning.dk	Punktum dk A/S (direct)
låsesmed-vesterbro.dk	Punktum dk A/S (direct)
låsesmed-værløse.dk	Punktum dk A/S (direct)
låsesmed-østerbro-låsesmed.dk	Punktum dk A/S (direct)
låsesmed-østerbrogade.dk	Punktum dk A/S (direct)
låsesmeden-valby.dk	Punktum dk A/S (direct)
nettolås.dk	Punktum dk A/S (direct)
rejse-forsikringer.dk	Punktum dk A/S (direct)
securepartner.dk	Punktum dk A/S (direct)
securepartners.dk	Punktum dk A/S (direct)
securitypartners.dk	Punktum dk A/S (direct)
skirejser-skirejser.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

39ms

33ms

AAAA

36ms

TXT

199ms

CAA

45ms

HTTPS

43ms

TLSA

82ms

SOA

0ms

MTA-STS

72ms

DNSSEC

122ms

SRV

68ms

Total

834ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 00:51:04	1790ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-07 15:38:03	1893ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-23 12:37:30	692ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-17 08:49:06 shown	834ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-02 17:54:24	677ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-27 17:19:38	550ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-10 07:40:39	2846ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-07 08:19:58	1176ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-10 01:32:30	2823ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-02 23:36:11	2196ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-27 22:04:10	1639ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-19 19:01:55	574ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-19 09:17:46	1236ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-18 13:25:38	992ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-17 04:05:10	478ms	2 NS 2 A 1 MX	🔒 Secure