rentefri.dk

📜 Historical scan 2026-08-30 18:09:15 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rentefri.dk is a .dk domain served by 2 nameservers (darwin.ns.cloudflare.com, nelly.ns.cloudflare.com). It was registered on 1 December 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 159.253.94.121 is hosted by Itm8 A/S (AS42903) in Denmark. Mail is handled by rentefri-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. 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 28ms

Nameserver	IP addresses	PTR	ASN / ISP
darwin.ns.cloudflare.com	108.162.193.151 172.64.33.151 173.245.59.151 2606:4700:58::adf5:3b97 2803:f800:50::6ca2:c197 2a06:98c1:50::ac40:2197	darwin.ns.cloudflare.com darwin.ns.cloudflare.com darwin.ns.cloudflare.com darwin.ns.cloudflare.com darwin.ns.cloudflare.com darwin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
nelly.ns.cloudflare.com	108.162.192.209 172.64.32.209 173.245.58.209 2606:4700:50::adf5:3ad1 2803:f800:50::6ca2:c0d1 2a06:98c1:50::ac40:20d1	nelly.ns.cloudflare.com nelly.ns.cloudflare.com nelly.ns.cloudflare.com nelly.ns.cloudflare.com nelly.ns.cloudflare.com nelly.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 26ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
159.253.94.121	300s	—	AS42903	Itm8 A/S	159.253.88.0/21	🇩🇰 Denmark	Frederiksværk

📧 MX Records#

1 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	rentefri-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca04::e 2a01:111:f403:ca09::9 2a01:111:f403:ca09::e 52.101.68.16 52.101.73.1 52.101.73.126 52.101.73.28	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 100ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

3 records 146ms

TXT Record
7GUI7fkvPChfnbRoYIRdVqfDWI7Hm1VX9L0lix0AJfI=
MS=ms45972789
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (rentefri.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 13:56:39

www CNAME	rentefri.dk (all on rentefri.dk) → 159.253.94.121 (AS42903)
www vs bare domain	Same network rentefri.dk: 159.253.94.121 (AS42903) www.rentefri.dk: 159.253.94.121 (AS42903)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
mail	—	RSA Invalid key data — receivers can't verify signatures

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.rentefri.dk	HZ_5yVjShvXJFGbMtka5wCS-3QhBWLFAPN6sCkytED4
TXT	_acme-challenge.rentefri.dk	KfAAsZugNukhD3qPUh3fPy0lay4Q9TWpmlO-FAtgLTM

🔗 TLSA / DANE#

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

🔐 DNSSEC#

102ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413589494
Primary NS (MNAME)	darwin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 13:41:12

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-12-01
Expires	2026-12-31 (71d)

📋 WHOIS#

⏱️ Lookup Timing#

28ms

26ms

25ms

AAAA

29ms

TXT

146ms

CAA

30ms

HTTPS

28ms

TLSA

515ms

SOA

0ms

MTA-STS

43ms

DNSSEC

102ms

SRV

100ms

Total

2622ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 10:37:08	1219ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-01 08:34:12	10115ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-27 21:10:32	10022ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-01 20:05:08	2263ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-30 18:09:15 shown	2622ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-29 12:14:58	1138ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 05:49:19	1942ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-01 19:52:07	1516ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 07:41:38	1111ms	2 NS 1 A 1 MX	🔓 Insecure