nfsn.dk

📜 Historical scan 2026-09-30 16:37:47 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nfsn.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 27 October 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 192.38.84.61 is hosted by IDDQD-AS (AS1835) in Denmark. Mail is handled by mx1.spamfilter.cc, mx2.spamfilter.cc and 1 more. The zone is DNSSEC-signed and validates, publishes a 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 32ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
192.38.84.61	43200s	rodeo.windenergy.dtu.dk	AS1835	IDDQD-AS	192.38.0.0/17	🇩🇰 Denmark	Kongens Lyngby

📧 MX Records#

3 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	mx1.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com 95.179.218.56.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
10	43200s	mx2.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com 95.179.218.56.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
20	43200s	mx3.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com 95.179.218.56.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	nfsn.dk → 192.38.84.61
🔶 Autoconfig	nfsn.dk → 192.38.84.61

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

5 records 146ms

TXT Record
3QGFii0svYWIqd87YSBipqGHwqWsHl73t9bjFcvC5COEM2Ad5PIyfgpgu1xrRrfQtJEnXn6ENZK0k2+V32aQOw==
HARICA-LdMSTBSI70X0s1Gq1ex
v=spf1 mx -all
xz1qtmcgbkszb3j266prc3g9gnk9tvzf
yL+apEmP3ObwBRZYsTk8dhNk0jgZD0+X8yvShKimhKbL+N8sABWajq0Q2k/jfRVJsdK8yJ5DDHm9FPZKVEMCrA==

✉️ SPF#

Policy	Record (nfsn.dk)
-all (hard fail)	v=spf1 mx -all

📨 DMARC#

Policy	Record (_dmarc.nfsn.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100;

📬 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 2026-10-10 22:15:49

www CNAME	san1.sitecore.dtu.dk (all on dtu.dk) → 52.236.166.178 (AS8075)
www vs bare domain	Different networks nfsn.dk: 192.38.84.61 (AS1835) www.nfsn.dk: 52.236.166.178 (AS8075) (all like this)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.nfsn.dk	nfsn.dk
TXT	nfsn.dk	xz1qtmcgbkszb3j266prc3g9gnk9tvzf

🔗 TLSA / DANE#

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

🔐 DNSSEC#

57ms

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

🏷️ SOA#

33ms

Field	Value
Serial	2026090802
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-05 17:13:17

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-10-27
Expires	2026-10-31 (12d)

📋 WHOIS#

⏱️ Lookup Timing#

32ms

31ms

39ms

AAAA

33ms

TXT

146ms

CAA

32ms

HTTPS

41ms

TLSA

89ms

SOA

33ms

MTA-STS

45ms

DNSSEC

57ms

SRV

50ms

Total

4487ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 22:15:49	1068ms	2 NS 1 A 3 MX	🔒 Secure
2026-10-09 20:17:12	1044ms	2 NS 1 A 3 MX	🔒 Secure
2026-10-05 16:57:37	3672ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-30 16:37:47 shown	4487ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-30 08:12:27	1449ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-27 20:21:35	1089ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-15 07:04:32	875ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-07 14:54:29	9614ms	2 NS 1 A 3 MX	🔒 Secure
2026-07-12 21:24:29	9303ms	2 NS 1 A 3 MX	🔒 Secure
2026-07-03 01:17:37	5338ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-27 07:48:32	974ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-22 15:08:53	1154ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 13:51:02	3072ms	2 NS 1 A 3 MX	🔒 Secure