4n.dk

Records from scan: 2026-10-12 22:03:42 · 1499ms total · last checked 2026-10-17 04:03 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4n.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 4 March 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by 4n-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 98ms

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

🌍 A Records#

1 records 144ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.100	600s	dnsforward.simply.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 134ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	4n-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::b 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::8 52.101.181.153 52.101.185.114 52.101.68.8 52.101.73.153	mail-db4pr02cu00204.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as8pr05cu00401.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 193ms

TXT Record
MS=ms68503686
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (4n.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#

checked 2026-10-12 22:03:42

www	94.231.103.100 (AS48854) (address records, no CNAME)
www vs bare domain	Same network 4n.dk: 94.231.103.100 (AS48854) www.4n.dk: 94.231.103.100 (AS48854)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

178ms

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

🏷️ SOA#

95ms

Field	Value
Serial	2026101200
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-03 09:32:14

Field	Value
Registrar	Simply.com A/S
Registered	2002-03-04
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

98ms

144ms

134ms

AAAA

117ms

TXT

193ms

CAA

106ms

HTTPS

113ms

TLSA

368ms

SOA

95ms

MTA-STS

136ms

DNSSEC

178ms

SRV

516ms

Total

1499ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 22:03:42 shown	1499ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-03 09:17:57	1889ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-01 09:02:45	580ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-27 21:25:21	1176ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-22 21:32:42	815ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 13:14:31	1631ms	3 NS 1 A 1 MX	🔒 Secure