501.dk

📜 Historical scan 2026-09-01 05:55:37 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

501.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 18 June 2026 (WHOIS) and first appeared in the .dk zone on 19 June 2026. Its website address 212.237.249.16 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by 501-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 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
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.237.249.16	3600s	splash.curanet.dk	AS48854	team.blue Denmark A/S	212.237.248.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	501-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::24 2a01:111:f403:ca09::a 2a01:111:f403:ca38::8 52.101.68.3 52.101.73.11 52.101.73.12 52.101.73.26	mail-db4pr02cu00204.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-as9pr05cu01302.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 → 40.104.116.8
🔶 Autoconfig	212.237.249.16

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 147ms

TXT Record
MS=ms36942831
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (501.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 2026-10-10 09:35:54

www	212.237.249.16 (AS48854) (address records, no CNAME)
www vs bare domain	Same network 501.dk: 212.237.249.16 (AS48854) www.501.dk: 212.237.249.16 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 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#

78ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026062603
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-10 15:02:27

Field	Value
Registrar	CURANET A/S
Registered	2026-06-18
Expires	2027-06-17 (243d)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

46ms

39ms

AAAA

38ms

TXT

147ms

CAA

28ms

HTTPS

57ms

TLSA

374ms

SOA

0ms

MTA-STS

71ms

DNSSEC

78ms

SRV

56ms

Total

880ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 01:10:23	943ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-01 05:55:37 shown	880ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-16 19:39:25	1100ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 20:58:07	1336ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 12:05:04	2000ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-23 22:26:35	2253ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-23 08:26:04	1177ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 04:46:08	477ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-20 03:52:07	399ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-19 09:00:22	672ms	2 NS 1 A 0 MX	🔒 Secure